The amplifier is without output fets...anybony knows the codes...i mean irf.....what or something?
M mixalos spl Member Joined 2014 2018-02-22 2:44 pm #1 2018-02-22 2:44 pm #1 The amplifier is without output fets...anybony knows the codes...i mean irf.....what or something? ••• More options Share M mixalos spl Member Joined 2014 2018-02-22 3:00 pm #2 2018-02-22 3:00 pm #2 some photos.... Attachments 20180222_163738.jpg 589.3 KB · Views: 73 20180222_163751.jpg 544.2 KB · Views: 75 ••• More options Share MarioRestucci Member Joined 2012 2018-02-22 4:47 pm #3 2018-02-22 4:47 pm #3 IRFB31N20D ••• More options Share M mixalos spl Member Joined 2014 2018-02-22 8:14 pm #4 2018-02-22 8:14 pm #4 I ll post tomorrow output pulses...i have problem at 5 fets pulse...the driver card is every single transistor ok... ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2018-02-22 9:52 pm #5 2018-02-22 9:52 pm #5 If it uses a driver board that has two MPSA42s in locations Q124/125, they should be replaced. If it uses a different driver board, post a photo. ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 5:59 am #6 2018-02-23 5:59 am #6 all right....i have irfb31n20d...thanks Mario..the driver board uses two MPSA42S....so i il replace them anyway....thank you too Perry...i ll post the waves without fets...only the drive pulses... ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 6:08 am #7 2018-02-23 6:08 am #7 the clear one is the right bank.the other wave is the left bank...is that ok?i guess not... Attachments 20180223_080218.jpg 466.1 KB · Views: 55 20180223_080337.jpg 477.5 KB · Views: 52 ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2018-02-23 6:12 am #8 2018-02-23 6:12 am #8 Install a 1000pf cap across pads 1 and 3 (on one FET location, for testing). That should give you a clean signal. ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 6:35 am #9 2018-02-23 6:35 am #9 yes thats a clean pulse!!!!why thats happening? ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 6:36 am #10 2018-02-23 6:36 am #10 now with one fet per bank(one left,one right) the left one that i add the capacitor...is getting pretty hot... ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2018-02-23 7:34 am #11 2018-02-23 7:34 am #11 Are the 31n20s that you have from an authorized dealer? The cap was only for testing. Don't leave it in with the FETs. ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 1:48 pm #12 2018-02-23 1:48 pm #12 The fets are genuine...the pulse is ok right? ••• More options Share 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 cadence zrs10...old amp Top Bottom
M mixalos spl Member Joined 2014 2018-02-22 3:00 pm #2 2018-02-22 3:00 pm #2 some photos.... Attachments 20180222_163738.jpg 589.3 KB · Views: 73 20180222_163751.jpg 544.2 KB · Views: 75 ••• More options Share MarioRestucci Member Joined 2012 2018-02-22 4:47 pm #3 2018-02-22 4:47 pm #3 IRFB31N20D ••• More options Share M mixalos spl Member Joined 2014 2018-02-22 8:14 pm #4 2018-02-22 8:14 pm #4 I ll post tomorrow output pulses...i have problem at 5 fets pulse...the driver card is every single transistor ok... ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2018-02-22 9:52 pm #5 2018-02-22 9:52 pm #5 If it uses a driver board that has two MPSA42s in locations Q124/125, they should be replaced. If it uses a different driver board, post a photo. ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 5:59 am #6 2018-02-23 5:59 am #6 all right....i have irfb31n20d...thanks Mario..the driver board uses two MPSA42S....so i il replace them anyway....thank you too Perry...i ll post the waves without fets...only the drive pulses... ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 6:08 am #7 2018-02-23 6:08 am #7 the clear one is the right bank.the other wave is the left bank...is that ok?i guess not... Attachments 20180223_080218.jpg 466.1 KB · Views: 55 20180223_080337.jpg 477.5 KB · Views: 52 ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2018-02-23 6:12 am #8 2018-02-23 6:12 am #8 Install a 1000pf cap across pads 1 and 3 (on one FET location, for testing). That should give you a clean signal. ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 6:35 am #9 2018-02-23 6:35 am #9 yes thats a clean pulse!!!!why thats happening? ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 6:36 am #10 2018-02-23 6:36 am #10 now with one fet per bank(one left,one right) the left one that i add the capacitor...is getting pretty hot... ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2018-02-23 7:34 am #11 2018-02-23 7:34 am #11 Are the 31n20s that you have from an authorized dealer? The cap was only for testing. Don't leave it in with the FETs. ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 1:48 pm #12 2018-02-23 1:48 pm #12 The fets are genuine...the pulse is ok right? ••• More options Share 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 cadence zrs10...old amp Top Bottom
MarioRestucci Member Joined 2012 2018-02-22 4:47 pm #3 2018-02-22 4:47 pm #3 IRFB31N20D ••• More options Share M mixalos spl Member Joined 2014 2018-02-22 8:14 pm #4 2018-02-22 8:14 pm #4 I ll post tomorrow output pulses...i have problem at 5 fets pulse...the driver card is every single transistor ok... ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2018-02-22 9:52 pm #5 2018-02-22 9:52 pm #5 If it uses a driver board that has two MPSA42s in locations Q124/125, they should be replaced. If it uses a different driver board, post a photo. ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 5:59 am #6 2018-02-23 5:59 am #6 all right....i have irfb31n20d...thanks Mario..the driver board uses two MPSA42S....so i il replace them anyway....thank you too Perry...i ll post the waves without fets...only the drive pulses... ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 6:08 am #7 2018-02-23 6:08 am #7 the clear one is the right bank.the other wave is the left bank...is that ok?i guess not... Attachments 20180223_080218.jpg 466.1 KB · Views: 55 20180223_080337.jpg 477.5 KB · Views: 52 ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2018-02-23 6:12 am #8 2018-02-23 6:12 am #8 Install a 1000pf cap across pads 1 and 3 (on one FET location, for testing). That should give you a clean signal. ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 6:35 am #9 2018-02-23 6:35 am #9 yes thats a clean pulse!!!!why thats happening? ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 6:36 am #10 2018-02-23 6:36 am #10 now with one fet per bank(one left,one right) the left one that i add the capacitor...is getting pretty hot... ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2018-02-23 7:34 am #11 2018-02-23 7:34 am #11 Are the 31n20s that you have from an authorized dealer? The cap was only for testing. Don't leave it in with the FETs. ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 1:48 pm #12 2018-02-23 1:48 pm #12 The fets are genuine...the pulse is ok right? ••• More options Share 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 cadence zrs10...old amp Top Bottom
M mixalos spl Member Joined 2014 2018-02-22 8:14 pm #4 2018-02-22 8:14 pm #4 I ll post tomorrow output pulses...i have problem at 5 fets pulse...the driver card is every single transistor ok... ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2018-02-22 9:52 pm #5 2018-02-22 9:52 pm #5 If it uses a driver board that has two MPSA42s in locations Q124/125, they should be replaced. If it uses a different driver board, post a photo. ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 5:59 am #6 2018-02-23 5:59 am #6 all right....i have irfb31n20d...thanks Mario..the driver board uses two MPSA42S....so i il replace them anyway....thank you too Perry...i ll post the waves without fets...only the drive pulses... ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 6:08 am #7 2018-02-23 6:08 am #7 the clear one is the right bank.the other wave is the left bank...is that ok?i guess not... Attachments 20180223_080218.jpg 466.1 KB · Views: 55 20180223_080337.jpg 477.5 KB · Views: 52 ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2018-02-23 6:12 am #8 2018-02-23 6:12 am #8 Install a 1000pf cap across pads 1 and 3 (on one FET location, for testing). That should give you a clean signal. ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 6:35 am #9 2018-02-23 6:35 am #9 yes thats a clean pulse!!!!why thats happening? ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 6:36 am #10 2018-02-23 6:36 am #10 now with one fet per bank(one left,one right) the left one that i add the capacitor...is getting pretty hot... ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2018-02-23 7:34 am #11 2018-02-23 7:34 am #11 Are the 31n20s that you have from an authorized dealer? The cap was only for testing. Don't leave it in with the FETs. ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 1:48 pm #12 2018-02-23 1:48 pm #12 The fets are genuine...the pulse is ok right? ••• More options Share 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 cadence zrs10...old amp Top Bottom
I ll post tomorrow output pulses...i have problem at 5 fets pulse...the driver card is every single transistor ok...
P Perry Babin Member Joined 2003 bcae1.com 2018-02-22 9:52 pm #5 2018-02-22 9:52 pm #5 If it uses a driver board that has two MPSA42s in locations Q124/125, they should be replaced. If it uses a different driver board, post a photo. ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 5:59 am #6 2018-02-23 5:59 am #6 all right....i have irfb31n20d...thanks Mario..the driver board uses two MPSA42S....so i il replace them anyway....thank you too Perry...i ll post the waves without fets...only the drive pulses... ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 6:08 am #7 2018-02-23 6:08 am #7 the clear one is the right bank.the other wave is the left bank...is that ok?i guess not... Attachments 20180223_080218.jpg 466.1 KB · Views: 55 20180223_080337.jpg 477.5 KB · Views: 52 ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2018-02-23 6:12 am #8 2018-02-23 6:12 am #8 Install a 1000pf cap across pads 1 and 3 (on one FET location, for testing). That should give you a clean signal. ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 6:35 am #9 2018-02-23 6:35 am #9 yes thats a clean pulse!!!!why thats happening? ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 6:36 am #10 2018-02-23 6:36 am #10 now with one fet per bank(one left,one right) the left one that i add the capacitor...is getting pretty hot... ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2018-02-23 7:34 am #11 2018-02-23 7:34 am #11 Are the 31n20s that you have from an authorized dealer? The cap was only for testing. Don't leave it in with the FETs. ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 1:48 pm #12 2018-02-23 1:48 pm #12 The fets are genuine...the pulse is ok right? ••• More options Share 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 cadence zrs10...old amp
If it uses a driver board that has two MPSA42s in locations Q124/125, they should be replaced. If it uses a different driver board, post a photo.
M mixalos spl Member Joined 2014 2018-02-23 5:59 am #6 2018-02-23 5:59 am #6 all right....i have irfb31n20d...thanks Mario..the driver board uses two MPSA42S....so i il replace them anyway....thank you too Perry...i ll post the waves without fets...only the drive pulses... ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 6:08 am #7 2018-02-23 6:08 am #7 the clear one is the right bank.the other wave is the left bank...is that ok?i guess not... Attachments 20180223_080218.jpg 466.1 KB · Views: 55 20180223_080337.jpg 477.5 KB · Views: 52 ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2018-02-23 6:12 am #8 2018-02-23 6:12 am #8 Install a 1000pf cap across pads 1 and 3 (on one FET location, for testing). That should give you a clean signal. ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 6:35 am #9 2018-02-23 6:35 am #9 yes thats a clean pulse!!!!why thats happening? ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 6:36 am #10 2018-02-23 6:36 am #10 now with one fet per bank(one left,one right) the left one that i add the capacitor...is getting pretty hot... ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2018-02-23 7:34 am #11 2018-02-23 7:34 am #11 Are the 31n20s that you have from an authorized dealer? The cap was only for testing. Don't leave it in with the FETs. ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 1:48 pm #12 2018-02-23 1:48 pm #12 The fets are genuine...the pulse is ok right? ••• More options Share 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 cadence zrs10...old amp
all right....i have irfb31n20d...thanks Mario..the driver board uses two MPSA42S....so i il replace them anyway....thank you too Perry...i ll post the waves without fets...only the drive pulses...
M mixalos spl Member Joined 2014 2018-02-23 6:08 am #7 2018-02-23 6:08 am #7 the clear one is the right bank.the other wave is the left bank...is that ok?i guess not... Attachments 20180223_080218.jpg 466.1 KB · Views: 55 20180223_080337.jpg 477.5 KB · Views: 52 ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2018-02-23 6:12 am #8 2018-02-23 6:12 am #8 Install a 1000pf cap across pads 1 and 3 (on one FET location, for testing). That should give you a clean signal. ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 6:35 am #9 2018-02-23 6:35 am #9 yes thats a clean pulse!!!!why thats happening? ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 6:36 am #10 2018-02-23 6:36 am #10 now with one fet per bank(one left,one right) the left one that i add the capacitor...is getting pretty hot... ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2018-02-23 7:34 am #11 2018-02-23 7:34 am #11 Are the 31n20s that you have from an authorized dealer? The cap was only for testing. Don't leave it in with the FETs. ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 1:48 pm #12 2018-02-23 1:48 pm #12 The fets are genuine...the pulse is ok right? ••• More options Share 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 2018-02-23 6:12 am #8 2018-02-23 6:12 am #8 Install a 1000pf cap across pads 1 and 3 (on one FET location, for testing). That should give you a clean signal. ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 6:35 am #9 2018-02-23 6:35 am #9 yes thats a clean pulse!!!!why thats happening? ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 6:36 am #10 2018-02-23 6:36 am #10 now with one fet per bank(one left,one right) the left one that i add the capacitor...is getting pretty hot... ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2018-02-23 7:34 am #11 2018-02-23 7:34 am #11 Are the 31n20s that you have from an authorized dealer? The cap was only for testing. Don't leave it in with the FETs. ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 1:48 pm #12 2018-02-23 1:48 pm #12 The fets are genuine...the pulse is ok right? ••• More options Share 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
Install a 1000pf cap across pads 1 and 3 (on one FET location, for testing). That should give you a clean signal.
M mixalos spl Member Joined 2014 2018-02-23 6:35 am #9 2018-02-23 6:35 am #9 yes thats a clean pulse!!!!why thats happening? ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 6:36 am #10 2018-02-23 6:36 am #10 now with one fet per bank(one left,one right) the left one that i add the capacitor...is getting pretty hot... ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2018-02-23 7:34 am #11 2018-02-23 7:34 am #11 Are the 31n20s that you have from an authorized dealer? The cap was only for testing. Don't leave it in with the FETs. ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 1:48 pm #12 2018-02-23 1:48 pm #12 The fets are genuine...the pulse is ok right? ••• More options Share 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
M mixalos spl Member Joined 2014 2018-02-23 6:36 am #10 2018-02-23 6:36 am #10 now with one fet per bank(one left,one right) the left one that i add the capacitor...is getting pretty hot... ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2018-02-23 7:34 am #11 2018-02-23 7:34 am #11 Are the 31n20s that you have from an authorized dealer? The cap was only for testing. Don't leave it in with the FETs. ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 1:48 pm #12 2018-02-23 1:48 pm #12 The fets are genuine...the pulse is ok right? ••• More options Share 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
now with one fet per bank(one left,one right) the left one that i add the capacitor...is getting pretty hot...
P Perry Babin Member Joined 2003 bcae1.com 2018-02-23 7:34 am #11 2018-02-23 7:34 am #11 Are the 31n20s that you have from an authorized dealer? The cap was only for testing. Don't leave it in with the FETs. ••• More options Share M mixalos spl Member Joined 2014 2018-02-23 1:48 pm #12 2018-02-23 1:48 pm #12 The fets are genuine...the pulse is ok right? ••• More options Share 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.
Are the 31n20s that you have from an authorized dealer? The cap was only for testing. Don't leave it in with the FETs.
M mixalos spl Member Joined 2014 2018-02-23 1:48 pm #12 2018-02-23 1:48 pm #12 The fets are genuine...the pulse is ok right? ••• More options Share
