With the outputs out of the circuit, does the amp blow a 10 amp fuse or go into protect?
P Perry Babin Member Joined 2003 bcae1.com 2011-11-11 3:16 am #41 2011-11-11 3:16 am #41 With the outputs out of the circuit, does the amp blow a 10 amp fuse or go into protect? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-11 3:30 am #42 2011-11-11 3:30 am #42 still goes into protect ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-11 3:31 am #43 2011-11-11 3:31 am #43 Is there still a pulse of DC across the speaker terminals? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-11 3:35 am #44 2011-11-11 3:35 am #44 yes jumps all over the scale ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-11 3:43 am #45 2011-11-11 3:43 am #45 Did it blow the 10 amp fuse? What's 'all over the scale'? You need to be as precise as possible. ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-11 9:47 am #46 2011-11-11 9:47 am #46 didnt blow fuse, goes from 15v to 22v to the mv range and so on ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-11 9:06 pm #47 2011-11-11 9:06 pm #47 Make sure that there are absolutely no solder bridges between the solder pads where you removed the output transistors. Check between the pads with your meter to confirm that there are no shorts between the pads. ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-11 10:24 pm #48 2011-11-11 10:24 pm #48 all pads were free of bridges ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-11 11:28 pm #49 2011-11-11 11:28 pm #49 Solder a bridge between pins 6 and 7 of IC32. Do you still get the pulse on the output? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 12:15 am #50 2011-11-12 12:15 am #50 yes 15 v then drops to mv scale ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 1:24 am #51 2011-11-12 1:24 am #51 Check the following transistors in-circuit to see if any are shorted. Q410 Q405 Q404 Q408 Q415 Q409 ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 1:41 am #52 2011-11-12 1:41 am #52 Q415 legs 1-2 shorted Q410 is one of the outputs that was removed Q409 good Q408 good Q404 good Q405 good ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 1:51 am #53 2011-11-12 1:51 am #53 Q410 should have been Q401. Desolder Q415 and check it out of the board. ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 1:55 am #54 2011-11-12 1:55 am #54 Q401 is good should i remove the solder bridge on ic32? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 2:07 am #55 2011-11-12 2:07 am #55 Q415 checks good out of circuit ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 3:00 am #56 2011-11-12 3:00 am #56 Either Q408 or Q409 could make Q415 look shorted. Recheck those. Do you still read a short across the pads for Q415? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:37 am #57 2011-11-12 9:37 am #57 no sir ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:38 am #58 2011-11-12 9:38 am #58 ill check those after work ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:35 pm #59 2011-11-12 8:35 pm #59 im getting 331 ohms on legs 1-2 on Q409 ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:50 pm #60 2011-11-12 8:50 pm #60 408 checks good out of circuit, should i remove 409? ••• More options Share Prev 1 2 3 4 5 Next First Prev 3 of 5 Go to page Go Next Last Show hidden low quality content Status This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link Home General Interest Car Audio Kenwood Kac-8104D Problem Top Bottom
B bigpun4fubu Member Joined 2010 2011-11-11 3:30 am #42 2011-11-11 3:30 am #42 still goes into protect ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-11 3:31 am #43 2011-11-11 3:31 am #43 Is there still a pulse of DC across the speaker terminals? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-11 3:35 am #44 2011-11-11 3:35 am #44 yes jumps all over the scale ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-11 3:43 am #45 2011-11-11 3:43 am #45 Did it blow the 10 amp fuse? What's 'all over the scale'? You need to be as precise as possible. ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-11 9:47 am #46 2011-11-11 9:47 am #46 didnt blow fuse, goes from 15v to 22v to the mv range and so on ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-11 9:06 pm #47 2011-11-11 9:06 pm #47 Make sure that there are absolutely no solder bridges between the solder pads where you removed the output transistors. Check between the pads with your meter to confirm that there are no shorts between the pads. ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-11 10:24 pm #48 2011-11-11 10:24 pm #48 all pads were free of bridges ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-11 11:28 pm #49 2011-11-11 11:28 pm #49 Solder a bridge between pins 6 and 7 of IC32. Do you still get the pulse on the output? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 12:15 am #50 2011-11-12 12:15 am #50 yes 15 v then drops to mv scale ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 1:24 am #51 2011-11-12 1:24 am #51 Check the following transistors in-circuit to see if any are shorted. Q410 Q405 Q404 Q408 Q415 Q409 ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 1:41 am #52 2011-11-12 1:41 am #52 Q415 legs 1-2 shorted Q410 is one of the outputs that was removed Q409 good Q408 good Q404 good Q405 good ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 1:51 am #53 2011-11-12 1:51 am #53 Q410 should have been Q401. Desolder Q415 and check it out of the board. ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 1:55 am #54 2011-11-12 1:55 am #54 Q401 is good should i remove the solder bridge on ic32? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 2:07 am #55 2011-11-12 2:07 am #55 Q415 checks good out of circuit ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 3:00 am #56 2011-11-12 3:00 am #56 Either Q408 or Q409 could make Q415 look shorted. Recheck those. Do you still read a short across the pads for Q415? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:37 am #57 2011-11-12 9:37 am #57 no sir ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:38 am #58 2011-11-12 9:38 am #58 ill check those after work ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:35 pm #59 2011-11-12 8:35 pm #59 im getting 331 ohms on legs 1-2 on Q409 ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:50 pm #60 2011-11-12 8:50 pm #60 408 checks good out of circuit, should i remove 409? ••• More options Share Prev 1 2 3 4 5 Next First Prev 3 of 5 Go to page Go Next Last Show hidden low quality content Status This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link Home General Interest Car Audio Kenwood Kac-8104D Problem Top Bottom
P Perry Babin Member Joined 2003 bcae1.com 2011-11-11 3:31 am #43 2011-11-11 3:31 am #43 Is there still a pulse of DC across the speaker terminals? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-11 3:35 am #44 2011-11-11 3:35 am #44 yes jumps all over the scale ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-11 3:43 am #45 2011-11-11 3:43 am #45 Did it blow the 10 amp fuse? What's 'all over the scale'? You need to be as precise as possible. ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-11 9:47 am #46 2011-11-11 9:47 am #46 didnt blow fuse, goes from 15v to 22v to the mv range and so on ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-11 9:06 pm #47 2011-11-11 9:06 pm #47 Make sure that there are absolutely no solder bridges between the solder pads where you removed the output transistors. Check between the pads with your meter to confirm that there are no shorts between the pads. ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-11 10:24 pm #48 2011-11-11 10:24 pm #48 all pads were free of bridges ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-11 11:28 pm #49 2011-11-11 11:28 pm #49 Solder a bridge between pins 6 and 7 of IC32. Do you still get the pulse on the output? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 12:15 am #50 2011-11-12 12:15 am #50 yes 15 v then drops to mv scale ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 1:24 am #51 2011-11-12 1:24 am #51 Check the following transistors in-circuit to see if any are shorted. Q410 Q405 Q404 Q408 Q415 Q409 ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 1:41 am #52 2011-11-12 1:41 am #52 Q415 legs 1-2 shorted Q410 is one of the outputs that was removed Q409 good Q408 good Q404 good Q405 good ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 1:51 am #53 2011-11-12 1:51 am #53 Q410 should have been Q401. Desolder Q415 and check it out of the board. ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 1:55 am #54 2011-11-12 1:55 am #54 Q401 is good should i remove the solder bridge on ic32? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 2:07 am #55 2011-11-12 2:07 am #55 Q415 checks good out of circuit ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 3:00 am #56 2011-11-12 3:00 am #56 Either Q408 or Q409 could make Q415 look shorted. Recheck those. Do you still read a short across the pads for Q415? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:37 am #57 2011-11-12 9:37 am #57 no sir ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:38 am #58 2011-11-12 9:38 am #58 ill check those after work ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:35 pm #59 2011-11-12 8:35 pm #59 im getting 331 ohms on legs 1-2 on Q409 ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:50 pm #60 2011-11-12 8:50 pm #60 408 checks good out of circuit, should i remove 409? ••• More options Share Prev 1 2 3 4 5 Next First Prev 3 of 5 Go to page Go Next Last Show hidden low quality content Status This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link Home General Interest Car Audio Kenwood Kac-8104D Problem Top Bottom
B bigpun4fubu Member Joined 2010 2011-11-11 3:35 am #44 2011-11-11 3:35 am #44 yes jumps all over the scale ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-11 3:43 am #45 2011-11-11 3:43 am #45 Did it blow the 10 amp fuse? What's 'all over the scale'? You need to be as precise as possible. ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-11 9:47 am #46 2011-11-11 9:47 am #46 didnt blow fuse, goes from 15v to 22v to the mv range and so on ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-11 9:06 pm #47 2011-11-11 9:06 pm #47 Make sure that there are absolutely no solder bridges between the solder pads where you removed the output transistors. Check between the pads with your meter to confirm that there are no shorts between the pads. ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-11 10:24 pm #48 2011-11-11 10:24 pm #48 all pads were free of bridges ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-11 11:28 pm #49 2011-11-11 11:28 pm #49 Solder a bridge between pins 6 and 7 of IC32. Do you still get the pulse on the output? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 12:15 am #50 2011-11-12 12:15 am #50 yes 15 v then drops to mv scale ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 1:24 am #51 2011-11-12 1:24 am #51 Check the following transistors in-circuit to see if any are shorted. Q410 Q405 Q404 Q408 Q415 Q409 ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 1:41 am #52 2011-11-12 1:41 am #52 Q415 legs 1-2 shorted Q410 is one of the outputs that was removed Q409 good Q408 good Q404 good Q405 good ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 1:51 am #53 2011-11-12 1:51 am #53 Q410 should have been Q401. Desolder Q415 and check it out of the board. ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 1:55 am #54 2011-11-12 1:55 am #54 Q401 is good should i remove the solder bridge on ic32? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 2:07 am #55 2011-11-12 2:07 am #55 Q415 checks good out of circuit ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 3:00 am #56 2011-11-12 3:00 am #56 Either Q408 or Q409 could make Q415 look shorted. Recheck those. Do you still read a short across the pads for Q415? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:37 am #57 2011-11-12 9:37 am #57 no sir ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:38 am #58 2011-11-12 9:38 am #58 ill check those after work ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:35 pm #59 2011-11-12 8:35 pm #59 im getting 331 ohms on legs 1-2 on Q409 ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:50 pm #60 2011-11-12 8:50 pm #60 408 checks good out of circuit, should i remove 409? ••• More options Share Prev 1 2 3 4 5 Next First Prev 3 of 5 Go to page Go Next Last Show hidden low quality content Status This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link Home General Interest Car Audio Kenwood Kac-8104D Problem Top Bottom
P Perry Babin Member Joined 2003 bcae1.com 2011-11-11 3:43 am #45 2011-11-11 3:43 am #45 Did it blow the 10 amp fuse? What's 'all over the scale'? You need to be as precise as possible. ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-11 9:47 am #46 2011-11-11 9:47 am #46 didnt blow fuse, goes from 15v to 22v to the mv range and so on ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-11 9:06 pm #47 2011-11-11 9:06 pm #47 Make sure that there are absolutely no solder bridges between the solder pads where you removed the output transistors. Check between the pads with your meter to confirm that there are no shorts between the pads. ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-11 10:24 pm #48 2011-11-11 10:24 pm #48 all pads were free of bridges ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-11 11:28 pm #49 2011-11-11 11:28 pm #49 Solder a bridge between pins 6 and 7 of IC32. Do you still get the pulse on the output? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 12:15 am #50 2011-11-12 12:15 am #50 yes 15 v then drops to mv scale ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 1:24 am #51 2011-11-12 1:24 am #51 Check the following transistors in-circuit to see if any are shorted. Q410 Q405 Q404 Q408 Q415 Q409 ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 1:41 am #52 2011-11-12 1:41 am #52 Q415 legs 1-2 shorted Q410 is one of the outputs that was removed Q409 good Q408 good Q404 good Q405 good ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 1:51 am #53 2011-11-12 1:51 am #53 Q410 should have been Q401. Desolder Q415 and check it out of the board. ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 1:55 am #54 2011-11-12 1:55 am #54 Q401 is good should i remove the solder bridge on ic32? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 2:07 am #55 2011-11-12 2:07 am #55 Q415 checks good out of circuit ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 3:00 am #56 2011-11-12 3:00 am #56 Either Q408 or Q409 could make Q415 look shorted. Recheck those. Do you still read a short across the pads for Q415? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:37 am #57 2011-11-12 9:37 am #57 no sir ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:38 am #58 2011-11-12 9:38 am #58 ill check those after work ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:35 pm #59 2011-11-12 8:35 pm #59 im getting 331 ohms on legs 1-2 on Q409 ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:50 pm #60 2011-11-12 8:50 pm #60 408 checks good out of circuit, should i remove 409? ••• More options Share Prev 1 2 3 4 5 Next First Prev 3 of 5 Go to page Go Next Last Show hidden low quality content Status This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link Home General Interest Car Audio Kenwood Kac-8104D Problem Top Bottom
B bigpun4fubu Member Joined 2010 2011-11-11 9:47 am #46 2011-11-11 9:47 am #46 didnt blow fuse, goes from 15v to 22v to the mv range and so on ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-11 9:06 pm #47 2011-11-11 9:06 pm #47 Make sure that there are absolutely no solder bridges between the solder pads where you removed the output transistors. Check between the pads with your meter to confirm that there are no shorts between the pads. ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-11 10:24 pm #48 2011-11-11 10:24 pm #48 all pads were free of bridges ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-11 11:28 pm #49 2011-11-11 11:28 pm #49 Solder a bridge between pins 6 and 7 of IC32. Do you still get the pulse on the output? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 12:15 am #50 2011-11-12 12:15 am #50 yes 15 v then drops to mv scale ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 1:24 am #51 2011-11-12 1:24 am #51 Check the following transistors in-circuit to see if any are shorted. Q410 Q405 Q404 Q408 Q415 Q409 ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 1:41 am #52 2011-11-12 1:41 am #52 Q415 legs 1-2 shorted Q410 is one of the outputs that was removed Q409 good Q408 good Q404 good Q405 good ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 1:51 am #53 2011-11-12 1:51 am #53 Q410 should have been Q401. Desolder Q415 and check it out of the board. ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 1:55 am #54 2011-11-12 1:55 am #54 Q401 is good should i remove the solder bridge on ic32? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 2:07 am #55 2011-11-12 2:07 am #55 Q415 checks good out of circuit ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 3:00 am #56 2011-11-12 3:00 am #56 Either Q408 or Q409 could make Q415 look shorted. Recheck those. Do you still read a short across the pads for Q415? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:37 am #57 2011-11-12 9:37 am #57 no sir ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:38 am #58 2011-11-12 9:38 am #58 ill check those after work ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:35 pm #59 2011-11-12 8:35 pm #59 im getting 331 ohms on legs 1-2 on Q409 ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:50 pm #60 2011-11-12 8:50 pm #60 408 checks good out of circuit, should i remove 409? ••• More options Share Prev 1 2 3 4 5 Next First Prev 3 of 5 Go to page Go Next Last Show hidden low quality content Status This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link Home General Interest Car Audio Kenwood Kac-8104D Problem Top Bottom
P Perry Babin Member Joined 2003 bcae1.com 2011-11-11 9:06 pm #47 2011-11-11 9:06 pm #47 Make sure that there are absolutely no solder bridges between the solder pads where you removed the output transistors. Check between the pads with your meter to confirm that there are no shorts between the pads. ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-11 10:24 pm #48 2011-11-11 10:24 pm #48 all pads were free of bridges ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-11 11:28 pm #49 2011-11-11 11:28 pm #49 Solder a bridge between pins 6 and 7 of IC32. Do you still get the pulse on the output? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 12:15 am #50 2011-11-12 12:15 am #50 yes 15 v then drops to mv scale ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 1:24 am #51 2011-11-12 1:24 am #51 Check the following transistors in-circuit to see if any are shorted. Q410 Q405 Q404 Q408 Q415 Q409 ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 1:41 am #52 2011-11-12 1:41 am #52 Q415 legs 1-2 shorted Q410 is one of the outputs that was removed Q409 good Q408 good Q404 good Q405 good ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 1:51 am #53 2011-11-12 1:51 am #53 Q410 should have been Q401. Desolder Q415 and check it out of the board. ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 1:55 am #54 2011-11-12 1:55 am #54 Q401 is good should i remove the solder bridge on ic32? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 2:07 am #55 2011-11-12 2:07 am #55 Q415 checks good out of circuit ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 3:00 am #56 2011-11-12 3:00 am #56 Either Q408 or Q409 could make Q415 look shorted. Recheck those. Do you still read a short across the pads for Q415? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:37 am #57 2011-11-12 9:37 am #57 no sir ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:38 am #58 2011-11-12 9:38 am #58 ill check those after work ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:35 pm #59 2011-11-12 8:35 pm #59 im getting 331 ohms on legs 1-2 on Q409 ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:50 pm #60 2011-11-12 8:50 pm #60 408 checks good out of circuit, should i remove 409? ••• More options Share Prev 1 2 3 4 5 Next First Prev 3 of 5 Go to page Go Next Last Show hidden low quality content Status This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link Home General Interest Car Audio Kenwood Kac-8104D Problem Top Bottom
Make sure that there are absolutely no solder bridges between the solder pads where you removed the output transistors. Check between the pads with your meter to confirm that there are no shorts between the pads.
B bigpun4fubu Member Joined 2010 2011-11-11 10:24 pm #48 2011-11-11 10:24 pm #48 all pads were free of bridges ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-11 11:28 pm #49 2011-11-11 11:28 pm #49 Solder a bridge between pins 6 and 7 of IC32. Do you still get the pulse on the output? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 12:15 am #50 2011-11-12 12:15 am #50 yes 15 v then drops to mv scale ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 1:24 am #51 2011-11-12 1:24 am #51 Check the following transistors in-circuit to see if any are shorted. Q410 Q405 Q404 Q408 Q415 Q409 ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 1:41 am #52 2011-11-12 1:41 am #52 Q415 legs 1-2 shorted Q410 is one of the outputs that was removed Q409 good Q408 good Q404 good Q405 good ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 1:51 am #53 2011-11-12 1:51 am #53 Q410 should have been Q401. Desolder Q415 and check it out of the board. ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 1:55 am #54 2011-11-12 1:55 am #54 Q401 is good should i remove the solder bridge on ic32? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 2:07 am #55 2011-11-12 2:07 am #55 Q415 checks good out of circuit ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 3:00 am #56 2011-11-12 3:00 am #56 Either Q408 or Q409 could make Q415 look shorted. Recheck those. Do you still read a short across the pads for Q415? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:37 am #57 2011-11-12 9:37 am #57 no sir ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:38 am #58 2011-11-12 9:38 am #58 ill check those after work ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:35 pm #59 2011-11-12 8:35 pm #59 im getting 331 ohms on legs 1-2 on Q409 ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:50 pm #60 2011-11-12 8:50 pm #60 408 checks good out of circuit, should i remove 409? ••• More options Share Prev 1 2 3 4 5 Next First Prev 3 of 5 Go to page Go Next Last Show hidden low quality content Status This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link Home General Interest Car Audio Kenwood Kac-8104D Problem Top Bottom
P Perry Babin Member Joined 2003 bcae1.com 2011-11-11 11:28 pm #49 2011-11-11 11:28 pm #49 Solder a bridge between pins 6 and 7 of IC32. Do you still get the pulse on the output? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 12:15 am #50 2011-11-12 12:15 am #50 yes 15 v then drops to mv scale ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 1:24 am #51 2011-11-12 1:24 am #51 Check the following transistors in-circuit to see if any are shorted. Q410 Q405 Q404 Q408 Q415 Q409 ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 1:41 am #52 2011-11-12 1:41 am #52 Q415 legs 1-2 shorted Q410 is one of the outputs that was removed Q409 good Q408 good Q404 good Q405 good ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 1:51 am #53 2011-11-12 1:51 am #53 Q410 should have been Q401. Desolder Q415 and check it out of the board. ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 1:55 am #54 2011-11-12 1:55 am #54 Q401 is good should i remove the solder bridge on ic32? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 2:07 am #55 2011-11-12 2:07 am #55 Q415 checks good out of circuit ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 3:00 am #56 2011-11-12 3:00 am #56 Either Q408 or Q409 could make Q415 look shorted. Recheck those. Do you still read a short across the pads for Q415? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:37 am #57 2011-11-12 9:37 am #57 no sir ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:38 am #58 2011-11-12 9:38 am #58 ill check those after work ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:35 pm #59 2011-11-12 8:35 pm #59 im getting 331 ohms on legs 1-2 on Q409 ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:50 pm #60 2011-11-12 8:50 pm #60 408 checks good out of circuit, should i remove 409? ••• More options Share Prev 1 2 3 4 5 Next First Prev 3 of 5 Go to page Go Next Last Show hidden low quality content Status This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link Home General Interest Car Audio Kenwood Kac-8104D Problem Top Bottom
B bigpun4fubu Member Joined 2010 2011-11-12 12:15 am #50 2011-11-12 12:15 am #50 yes 15 v then drops to mv scale ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 1:24 am #51 2011-11-12 1:24 am #51 Check the following transistors in-circuit to see if any are shorted. Q410 Q405 Q404 Q408 Q415 Q409 ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 1:41 am #52 2011-11-12 1:41 am #52 Q415 legs 1-2 shorted Q410 is one of the outputs that was removed Q409 good Q408 good Q404 good Q405 good ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 1:51 am #53 2011-11-12 1:51 am #53 Q410 should have been Q401. Desolder Q415 and check it out of the board. ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 1:55 am #54 2011-11-12 1:55 am #54 Q401 is good should i remove the solder bridge on ic32? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 2:07 am #55 2011-11-12 2:07 am #55 Q415 checks good out of circuit ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 3:00 am #56 2011-11-12 3:00 am #56 Either Q408 or Q409 could make Q415 look shorted. Recheck those. Do you still read a short across the pads for Q415? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:37 am #57 2011-11-12 9:37 am #57 no sir ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:38 am #58 2011-11-12 9:38 am #58 ill check those after work ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:35 pm #59 2011-11-12 8:35 pm #59 im getting 331 ohms on legs 1-2 on Q409 ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:50 pm #60 2011-11-12 8:50 pm #60 408 checks good out of circuit, should i remove 409? ••• More options Share Prev 1 2 3 4 5 Next First Prev 3 of 5 Go to page Go Next Last Show hidden low quality content Status This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link Home General Interest Car Audio Kenwood Kac-8104D Problem Top Bottom
P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 1:24 am #51 2011-11-12 1:24 am #51 Check the following transistors in-circuit to see if any are shorted. Q410 Q405 Q404 Q408 Q415 Q409 ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 1:41 am #52 2011-11-12 1:41 am #52 Q415 legs 1-2 shorted Q410 is one of the outputs that was removed Q409 good Q408 good Q404 good Q405 good ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 1:51 am #53 2011-11-12 1:51 am #53 Q410 should have been Q401. Desolder Q415 and check it out of the board. ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 1:55 am #54 2011-11-12 1:55 am #54 Q401 is good should i remove the solder bridge on ic32? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 2:07 am #55 2011-11-12 2:07 am #55 Q415 checks good out of circuit ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 3:00 am #56 2011-11-12 3:00 am #56 Either Q408 or Q409 could make Q415 look shorted. Recheck those. Do you still read a short across the pads for Q415? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:37 am #57 2011-11-12 9:37 am #57 no sir ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:38 am #58 2011-11-12 9:38 am #58 ill check those after work ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:35 pm #59 2011-11-12 8:35 pm #59 im getting 331 ohms on legs 1-2 on Q409 ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:50 pm #60 2011-11-12 8:50 pm #60 408 checks good out of circuit, should i remove 409? ••• More options Share Prev 1 2 3 4 5 Next First Prev 3 of 5 Go to page Go Next Last Show hidden low quality content Status This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link Home General Interest Car Audio Kenwood Kac-8104D Problem Top Bottom
B bigpun4fubu Member Joined 2010 2011-11-12 1:41 am #52 2011-11-12 1:41 am #52 Q415 legs 1-2 shorted Q410 is one of the outputs that was removed Q409 good Q408 good Q404 good Q405 good ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 1:51 am #53 2011-11-12 1:51 am #53 Q410 should have been Q401. Desolder Q415 and check it out of the board. ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 1:55 am #54 2011-11-12 1:55 am #54 Q401 is good should i remove the solder bridge on ic32? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 2:07 am #55 2011-11-12 2:07 am #55 Q415 checks good out of circuit ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 3:00 am #56 2011-11-12 3:00 am #56 Either Q408 or Q409 could make Q415 look shorted. Recheck those. Do you still read a short across the pads for Q415? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:37 am #57 2011-11-12 9:37 am #57 no sir ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:38 am #58 2011-11-12 9:38 am #58 ill check those after work ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:35 pm #59 2011-11-12 8:35 pm #59 im getting 331 ohms on legs 1-2 on Q409 ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:50 pm #60 2011-11-12 8:50 pm #60 408 checks good out of circuit, should i remove 409? ••• More options Share Prev 1 2 3 4 5 Next First Prev 3 of 5 Go to page Go Next Last Show hidden low quality content Status This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link Home General Interest Car Audio Kenwood Kac-8104D Problem Top Bottom
Q415 legs 1-2 shorted Q410 is one of the outputs that was removed Q409 good Q408 good Q404 good Q405 good
P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 1:51 am #53 2011-11-12 1:51 am #53 Q410 should have been Q401. Desolder Q415 and check it out of the board. ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 1:55 am #54 2011-11-12 1:55 am #54 Q401 is good should i remove the solder bridge on ic32? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 2:07 am #55 2011-11-12 2:07 am #55 Q415 checks good out of circuit ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 3:00 am #56 2011-11-12 3:00 am #56 Either Q408 or Q409 could make Q415 look shorted. Recheck those. Do you still read a short across the pads for Q415? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:37 am #57 2011-11-12 9:37 am #57 no sir ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:38 am #58 2011-11-12 9:38 am #58 ill check those after work ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:35 pm #59 2011-11-12 8:35 pm #59 im getting 331 ohms on legs 1-2 on Q409 ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:50 pm #60 2011-11-12 8:50 pm #60 408 checks good out of circuit, should i remove 409? ••• More options Share Prev 1 2 3 4 5 Next First Prev 3 of 5 Go to page Go Next Last Show hidden low quality content Status This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link Home General Interest Car Audio Kenwood Kac-8104D Problem
B bigpun4fubu Member Joined 2010 2011-11-12 1:55 am #54 2011-11-12 1:55 am #54 Q401 is good should i remove the solder bridge on ic32? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 2:07 am #55 2011-11-12 2:07 am #55 Q415 checks good out of circuit ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 3:00 am #56 2011-11-12 3:00 am #56 Either Q408 or Q409 could make Q415 look shorted. Recheck those. Do you still read a short across the pads for Q415? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:37 am #57 2011-11-12 9:37 am #57 no sir ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:38 am #58 2011-11-12 9:38 am #58 ill check those after work ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:35 pm #59 2011-11-12 8:35 pm #59 im getting 331 ohms on legs 1-2 on Q409 ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:50 pm #60 2011-11-12 8:50 pm #60 408 checks good out of circuit, should i remove 409? ••• More options Share Prev 1 2 3 4 5 Next First Prev 3 of 5 Go to page Go Next Last Show hidden low quality content Status This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link Home General Interest Car Audio Kenwood Kac-8104D Problem
B bigpun4fubu Member Joined 2010 2011-11-12 2:07 am #55 2011-11-12 2:07 am #55 Q415 checks good out of circuit ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 3:00 am #56 2011-11-12 3:00 am #56 Either Q408 or Q409 could make Q415 look shorted. Recheck those. Do you still read a short across the pads for Q415? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:37 am #57 2011-11-12 9:37 am #57 no sir ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:38 am #58 2011-11-12 9:38 am #58 ill check those after work ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:35 pm #59 2011-11-12 8:35 pm #59 im getting 331 ohms on legs 1-2 on Q409 ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:50 pm #60 2011-11-12 8:50 pm #60 408 checks good out of circuit, should i remove 409? ••• More options Share Prev 1 2 3 4 5 Next First Prev 3 of 5 Go to page Go Next Last Show hidden low quality content Status This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link
P Perry Babin Member Joined 2003 bcae1.com 2011-11-12 3:00 am #56 2011-11-12 3:00 am #56 Either Q408 or Q409 could make Q415 look shorted. Recheck those. Do you still read a short across the pads for Q415? ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:37 am #57 2011-11-12 9:37 am #57 no sir ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:38 am #58 2011-11-12 9:38 am #58 ill check those after work ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:35 pm #59 2011-11-12 8:35 pm #59 im getting 331 ohms on legs 1-2 on Q409 ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:50 pm #60 2011-11-12 8:50 pm #60 408 checks good out of circuit, should i remove 409? ••• More options Share Prev 1 2 3 4 5 Next First Prev 3 of 5 Go to page Go Next Last Show hidden low quality content Status This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link
Either Q408 or Q409 could make Q415 look shorted. Recheck those. Do you still read a short across the pads for Q415?
B bigpun4fubu Member Joined 2010 2011-11-12 9:37 am #57 2011-11-12 9:37 am #57 no sir ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 9:38 am #58 2011-11-12 9:38 am #58 ill check those after work ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:35 pm #59 2011-11-12 8:35 pm #59 im getting 331 ohms on legs 1-2 on Q409 ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:50 pm #60 2011-11-12 8:50 pm #60 408 checks good out of circuit, should i remove 409? ••• More options Share Prev 1 2 3 4 5 Next First Prev 3 of 5 Go to page Go Next Last Show hidden low quality content Status This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link
B bigpun4fubu Member Joined 2010 2011-11-12 9:38 am #58 2011-11-12 9:38 am #58 ill check those after work ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:35 pm #59 2011-11-12 8:35 pm #59 im getting 331 ohms on legs 1-2 on Q409 ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:50 pm #60 2011-11-12 8:50 pm #60 408 checks good out of circuit, should i remove 409? ••• More options Share Prev 1 2 3 4 5 Next First Prev 3 of 5 Go to page Go Next Last Show hidden low quality content Status This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link
B bigpun4fubu Member Joined 2010 2011-11-12 8:35 pm #59 2011-11-12 8:35 pm #59 im getting 331 ohms on legs 1-2 on Q409 ••• More options Share B bigpun4fubu Member Joined 2010 2011-11-12 8:50 pm #60 2011-11-12 8:50 pm #60 408 checks good out of circuit, should i remove 409? ••• More options Share Prev 1 2 3 4 5 Next First Prev 3 of 5 Go to page Go Next Last Show hidden low quality content Status This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
B bigpun4fubu Member Joined 2010 2011-11-12 8:50 pm #60 2011-11-12 8:50 pm #60 408 checks good out of circuit, should i remove 409? ••• More options Share