Q226 still out. No solder bridges.
P peeby Member Joined 2020 2020-08-06 9:55 pm #21 2020-08-06 9:55 pm #21 Q226 still out. No solder bridges. ••• More options Share P peeby Member Joined 2020 2020-08-06 10:07 pm #22 2020-08-06 10:07 pm #22 Is it possible the D11 zener is bad and not regulating even though it checks ok in circuit (diode check). It seems B+ is gett ing in somewhere. ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2020-08-06 10:18 pm #23 2020-08-06 10:18 pm #23 D11 isn't a regulator here. It's used to shut the amp down if the input voltage is too high. It's possible that it's leaky. ••• More options Share P peeby Member Joined 2020 2020-08-06 10:24 pm #24 2020-08-06 10:24 pm #24 OK to run amp with D11 out of circuit? ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2020-08-06 10:25 pm #25 2020-08-06 10:25 pm #25 Yes. It's only there for over-voltage protection. ••• More options Share P peeby Member Joined 2020 2020-08-06 10:59 pm #26 2020-08-06 10:59 pm #26 393 pin 3: Removed D34 pin 3 still hi Removed D7 pin 3 still hi Removed D5 Pin 3 lo 494 outputting. Can I assume D5 and D6 leaking? ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2020-08-06 11:30 pm #27 2020-08-06 11:30 pm #27 That would be a safe assumption but odd to have two leaky diodes in the same circuit. Do the check as leaky out of the board? Does the voltage on terminal 3 go to near zero with all other components back in the board except for D5/D6? ••• More options Share P peeby Member Joined 2020 2020-08-07 12:14 am #28 2020-08-07 12:14 am #28 Out of circuit D5 tests open and D6 is ok. Maybe testing open but leaking when voltage is present? Yes with D5 and D6 out, and everything else back in, got a nice gate drive on the PS Fets. Do not have these diodes so will have to order. ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2020-08-07 3:03 am #29 2020-08-07 3:03 am #29 Looking at the photo of the board in post 1, it looks like D5 has a bump. I thought it was a dimple from molding/manufacturing but I can't see it on the other diodes. ••• More options Share P peeby Member Joined 2020 2020-08-11 4:26 pm #30 2020-08-11 4:26 pm #30 You are exactly right on the bump on the diode. Hey, I believe Q288 on the drawing is for over-current protection? My board also has Q289 on the other rail. Would Q289 likely be a PNP complement to Q288? ••• More options Share P peeby Member Joined 2020 2020-08-11 4:32 pm #31 2020-08-11 4:32 pm #31 Nevermind. Figured it out. ••• More options Share Prev 1 2 First Prev 2 of 2 Go to page Go 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 Hifonics Brutus 1700.1D PS Driver Card Top Bottom
P peeby Member Joined 2020 2020-08-06 10:07 pm #22 2020-08-06 10:07 pm #22 Is it possible the D11 zener is bad and not regulating even though it checks ok in circuit (diode check). It seems B+ is gett ing in somewhere. ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2020-08-06 10:18 pm #23 2020-08-06 10:18 pm #23 D11 isn't a regulator here. It's used to shut the amp down if the input voltage is too high. It's possible that it's leaky. ••• More options Share P peeby Member Joined 2020 2020-08-06 10:24 pm #24 2020-08-06 10:24 pm #24 OK to run amp with D11 out of circuit? ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2020-08-06 10:25 pm #25 2020-08-06 10:25 pm #25 Yes. It's only there for over-voltage protection. ••• More options Share P peeby Member Joined 2020 2020-08-06 10:59 pm #26 2020-08-06 10:59 pm #26 393 pin 3: Removed D34 pin 3 still hi Removed D7 pin 3 still hi Removed D5 Pin 3 lo 494 outputting. Can I assume D5 and D6 leaking? ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2020-08-06 11:30 pm #27 2020-08-06 11:30 pm #27 That would be a safe assumption but odd to have two leaky diodes in the same circuit. Do the check as leaky out of the board? Does the voltage on terminal 3 go to near zero with all other components back in the board except for D5/D6? ••• More options Share P peeby Member Joined 2020 2020-08-07 12:14 am #28 2020-08-07 12:14 am #28 Out of circuit D5 tests open and D6 is ok. Maybe testing open but leaking when voltage is present? Yes with D5 and D6 out, and everything else back in, got a nice gate drive on the PS Fets. Do not have these diodes so will have to order. ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2020-08-07 3:03 am #29 2020-08-07 3:03 am #29 Looking at the photo of the board in post 1, it looks like D5 has a bump. I thought it was a dimple from molding/manufacturing but I can't see it on the other diodes. ••• More options Share P peeby Member Joined 2020 2020-08-11 4:26 pm #30 2020-08-11 4:26 pm #30 You are exactly right on the bump on the diode. Hey, I believe Q288 on the drawing is for over-current protection? My board also has Q289 on the other rail. Would Q289 likely be a PNP complement to Q288? ••• More options Share P peeby Member Joined 2020 2020-08-11 4:32 pm #31 2020-08-11 4:32 pm #31 Nevermind. Figured it out. ••• More options Share Prev 1 2 First Prev 2 of 2 Go to page Go 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 Hifonics Brutus 1700.1D PS Driver Card Top Bottom
Is it possible the D11 zener is bad and not regulating even though it checks ok in circuit (diode check). It seems B+ is gett ing in somewhere.
P Perry Babin Member Joined 2003 bcae1.com 2020-08-06 10:18 pm #23 2020-08-06 10:18 pm #23 D11 isn't a regulator here. It's used to shut the amp down if the input voltage is too high. It's possible that it's leaky. ••• More options Share P peeby Member Joined 2020 2020-08-06 10:24 pm #24 2020-08-06 10:24 pm #24 OK to run amp with D11 out of circuit? ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2020-08-06 10:25 pm #25 2020-08-06 10:25 pm #25 Yes. It's only there for over-voltage protection. ••• More options Share P peeby Member Joined 2020 2020-08-06 10:59 pm #26 2020-08-06 10:59 pm #26 393 pin 3: Removed D34 pin 3 still hi Removed D7 pin 3 still hi Removed D5 Pin 3 lo 494 outputting. Can I assume D5 and D6 leaking? ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2020-08-06 11:30 pm #27 2020-08-06 11:30 pm #27 That would be a safe assumption but odd to have two leaky diodes in the same circuit. Do the check as leaky out of the board? Does the voltage on terminal 3 go to near zero with all other components back in the board except for D5/D6? ••• More options Share P peeby Member Joined 2020 2020-08-07 12:14 am #28 2020-08-07 12:14 am #28 Out of circuit D5 tests open and D6 is ok. Maybe testing open but leaking when voltage is present? Yes with D5 and D6 out, and everything else back in, got a nice gate drive on the PS Fets. Do not have these diodes so will have to order. ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2020-08-07 3:03 am #29 2020-08-07 3:03 am #29 Looking at the photo of the board in post 1, it looks like D5 has a bump. I thought it was a dimple from molding/manufacturing but I can't see it on the other diodes. ••• More options Share P peeby Member Joined 2020 2020-08-11 4:26 pm #30 2020-08-11 4:26 pm #30 You are exactly right on the bump on the diode. Hey, I believe Q288 on the drawing is for over-current protection? My board also has Q289 on the other rail. Would Q289 likely be a PNP complement to Q288? ••• More options Share P peeby Member Joined 2020 2020-08-11 4:32 pm #31 2020-08-11 4:32 pm #31 Nevermind. Figured it out. ••• More options Share Prev 1 2 First Prev 2 of 2 Go to page Go 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 Hifonics Brutus 1700.1D PS Driver Card Top Bottom
D11 isn't a regulator here. It's used to shut the amp down if the input voltage is too high. It's possible that it's leaky.
P peeby Member Joined 2020 2020-08-06 10:24 pm #24 2020-08-06 10:24 pm #24 OK to run amp with D11 out of circuit? ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2020-08-06 10:25 pm #25 2020-08-06 10:25 pm #25 Yes. It's only there for over-voltage protection. ••• More options Share P peeby Member Joined 2020 2020-08-06 10:59 pm #26 2020-08-06 10:59 pm #26 393 pin 3: Removed D34 pin 3 still hi Removed D7 pin 3 still hi Removed D5 Pin 3 lo 494 outputting. Can I assume D5 and D6 leaking? ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2020-08-06 11:30 pm #27 2020-08-06 11:30 pm #27 That would be a safe assumption but odd to have two leaky diodes in the same circuit. Do the check as leaky out of the board? Does the voltage on terminal 3 go to near zero with all other components back in the board except for D5/D6? ••• More options Share P peeby Member Joined 2020 2020-08-07 12:14 am #28 2020-08-07 12:14 am #28 Out of circuit D5 tests open and D6 is ok. Maybe testing open but leaking when voltage is present? Yes with D5 and D6 out, and everything else back in, got a nice gate drive on the PS Fets. Do not have these diodes so will have to order. ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2020-08-07 3:03 am #29 2020-08-07 3:03 am #29 Looking at the photo of the board in post 1, it looks like D5 has a bump. I thought it was a dimple from molding/manufacturing but I can't see it on the other diodes. ••• More options Share P peeby Member Joined 2020 2020-08-11 4:26 pm #30 2020-08-11 4:26 pm #30 You are exactly right on the bump on the diode. Hey, I believe Q288 on the drawing is for over-current protection? My board also has Q289 on the other rail. Would Q289 likely be a PNP complement to Q288? ••• More options Share P peeby Member Joined 2020 2020-08-11 4:32 pm #31 2020-08-11 4:32 pm #31 Nevermind. Figured it out. ••• More options Share Prev 1 2 First Prev 2 of 2 Go to page Go 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 Hifonics Brutus 1700.1D PS Driver Card
P Perry Babin Member Joined 2003 bcae1.com 2020-08-06 10:25 pm #25 2020-08-06 10:25 pm #25 Yes. It's only there for over-voltage protection. ••• More options Share P peeby Member Joined 2020 2020-08-06 10:59 pm #26 2020-08-06 10:59 pm #26 393 pin 3: Removed D34 pin 3 still hi Removed D7 pin 3 still hi Removed D5 Pin 3 lo 494 outputting. Can I assume D5 and D6 leaking? ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2020-08-06 11:30 pm #27 2020-08-06 11:30 pm #27 That would be a safe assumption but odd to have two leaky diodes in the same circuit. Do the check as leaky out of the board? Does the voltage on terminal 3 go to near zero with all other components back in the board except for D5/D6? ••• More options Share P peeby Member Joined 2020 2020-08-07 12:14 am #28 2020-08-07 12:14 am #28 Out of circuit D5 tests open and D6 is ok. Maybe testing open but leaking when voltage is present? Yes with D5 and D6 out, and everything else back in, got a nice gate drive on the PS Fets. Do not have these diodes so will have to order. ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2020-08-07 3:03 am #29 2020-08-07 3:03 am #29 Looking at the photo of the board in post 1, it looks like D5 has a bump. I thought it was a dimple from molding/manufacturing but I can't see it on the other diodes. ••• More options Share P peeby Member Joined 2020 2020-08-11 4:26 pm #30 2020-08-11 4:26 pm #30 You are exactly right on the bump on the diode. Hey, I believe Q288 on the drawing is for over-current protection? My board also has Q289 on the other rail. Would Q289 likely be a PNP complement to Q288? ••• More options Share P peeby Member Joined 2020 2020-08-11 4:32 pm #31 2020-08-11 4:32 pm #31 Nevermind. Figured it out. ••• More options Share Prev 1 2 First Prev 2 of 2 Go to page Go 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 Hifonics Brutus 1700.1D PS Driver Card
P peeby Member Joined 2020 2020-08-06 10:59 pm #26 2020-08-06 10:59 pm #26 393 pin 3: Removed D34 pin 3 still hi Removed D7 pin 3 still hi Removed D5 Pin 3 lo 494 outputting. Can I assume D5 and D6 leaking? ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2020-08-06 11:30 pm #27 2020-08-06 11:30 pm #27 That would be a safe assumption but odd to have two leaky diodes in the same circuit. Do the check as leaky out of the board? Does the voltage on terminal 3 go to near zero with all other components back in the board except for D5/D6? ••• More options Share P peeby Member Joined 2020 2020-08-07 12:14 am #28 2020-08-07 12:14 am #28 Out of circuit D5 tests open and D6 is ok. Maybe testing open but leaking when voltage is present? Yes with D5 and D6 out, and everything else back in, got a nice gate drive on the PS Fets. Do not have these diodes so will have to order. ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2020-08-07 3:03 am #29 2020-08-07 3:03 am #29 Looking at the photo of the board in post 1, it looks like D5 has a bump. I thought it was a dimple from molding/manufacturing but I can't see it on the other diodes. ••• More options Share P peeby Member Joined 2020 2020-08-11 4:26 pm #30 2020-08-11 4:26 pm #30 You are exactly right on the bump on the diode. Hey, I believe Q288 on the drawing is for over-current protection? My board also has Q289 on the other rail. Would Q289 likely be a PNP complement to Q288? ••• More options Share P peeby Member Joined 2020 2020-08-11 4:32 pm #31 2020-08-11 4:32 pm #31 Nevermind. Figured it out. ••• More options Share Prev 1 2 First Prev 2 of 2 Go to page Go 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
393 pin 3: Removed D34 pin 3 still hi Removed D7 pin 3 still hi Removed D5 Pin 3 lo 494 outputting. Can I assume D5 and D6 leaking?
P Perry Babin Member Joined 2003 bcae1.com 2020-08-06 11:30 pm #27 2020-08-06 11:30 pm #27 That would be a safe assumption but odd to have two leaky diodes in the same circuit. Do the check as leaky out of the board? Does the voltage on terminal 3 go to near zero with all other components back in the board except for D5/D6? ••• More options Share P peeby Member Joined 2020 2020-08-07 12:14 am #28 2020-08-07 12:14 am #28 Out of circuit D5 tests open and D6 is ok. Maybe testing open but leaking when voltage is present? Yes with D5 and D6 out, and everything else back in, got a nice gate drive on the PS Fets. Do not have these diodes so will have to order. ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2020-08-07 3:03 am #29 2020-08-07 3:03 am #29 Looking at the photo of the board in post 1, it looks like D5 has a bump. I thought it was a dimple from molding/manufacturing but I can't see it on the other diodes. ••• More options Share P peeby Member Joined 2020 2020-08-11 4:26 pm #30 2020-08-11 4:26 pm #30 You are exactly right on the bump on the diode. Hey, I believe Q288 on the drawing is for over-current protection? My board also has Q289 on the other rail. Would Q289 likely be a PNP complement to Q288? ••• More options Share P peeby Member Joined 2020 2020-08-11 4:32 pm #31 2020-08-11 4:32 pm #31 Nevermind. Figured it out. ••• More options Share Prev 1 2 First Prev 2 of 2 Go to page Go 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
That would be a safe assumption but odd to have two leaky diodes in the same circuit. Do the check as leaky out of the board? Does the voltage on terminal 3 go to near zero with all other components back in the board except for D5/D6?
P peeby Member Joined 2020 2020-08-07 12:14 am #28 2020-08-07 12:14 am #28 Out of circuit D5 tests open and D6 is ok. Maybe testing open but leaking when voltage is present? Yes with D5 and D6 out, and everything else back in, got a nice gate drive on the PS Fets. Do not have these diodes so will have to order. ••• More options Share P Perry Babin Member Joined 2003 bcae1.com 2020-08-07 3:03 am #29 2020-08-07 3:03 am #29 Looking at the photo of the board in post 1, it looks like D5 has a bump. I thought it was a dimple from molding/manufacturing but I can't see it on the other diodes. ••• More options Share P peeby Member Joined 2020 2020-08-11 4:26 pm #30 2020-08-11 4:26 pm #30 You are exactly right on the bump on the diode. Hey, I believe Q288 on the drawing is for over-current protection? My board also has Q289 on the other rail. Would Q289 likely be a PNP complement to Q288? ••• More options Share P peeby Member Joined 2020 2020-08-11 4:32 pm #31 2020-08-11 4:32 pm #31 Nevermind. Figured it out. ••• More options Share Prev 1 2 First Prev 2 of 2 Go to page Go 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
Out of circuit D5 tests open and D6 is ok. Maybe testing open but leaking when voltage is present? Yes with D5 and D6 out, and everything else back in, got a nice gate drive on the PS Fets. Do not have these diodes so will have to order.
P Perry Babin Member Joined 2003 bcae1.com 2020-08-07 3:03 am #29 2020-08-07 3:03 am #29 Looking at the photo of the board in post 1, it looks like D5 has a bump. I thought it was a dimple from molding/manufacturing but I can't see it on the other diodes. ••• More options Share P peeby Member Joined 2020 2020-08-11 4:26 pm #30 2020-08-11 4:26 pm #30 You are exactly right on the bump on the diode. Hey, I believe Q288 on the drawing is for over-current protection? My board also has Q289 on the other rail. Would Q289 likely be a PNP complement to Q288? ••• More options Share P peeby Member Joined 2020 2020-08-11 4:32 pm #31 2020-08-11 4:32 pm #31 Nevermind. Figured it out. ••• More options Share Prev 1 2 First Prev 2 of 2 Go to page Go 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
Looking at the photo of the board in post 1, it looks like D5 has a bump. I thought it was a dimple from molding/manufacturing but I can't see it on the other diodes.
P peeby Member Joined 2020 2020-08-11 4:26 pm #30 2020-08-11 4:26 pm #30 You are exactly right on the bump on the diode. Hey, I believe Q288 on the drawing is for over-current protection? My board also has Q289 on the other rail. Would Q289 likely be a PNP complement to Q288? ••• More options Share P peeby Member Joined 2020 2020-08-11 4:32 pm #31 2020-08-11 4:32 pm #31 Nevermind. Figured it out. ••• More options Share Prev 1 2 First Prev 2 of 2 Go to page Go 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.
You are exactly right on the bump on the diode. Hey, I believe Q288 on the drawing is for over-current protection? My board also has Q289 on the other rail. Would Q289 likely be a PNP complement to Q288?
P peeby Member Joined 2020 2020-08-11 4:32 pm #31 2020-08-11 4:32 pm #31 Nevermind. Figured it out. ••• More options Share