kaplang
Works for me !
Let me start out by saying that my troubleshooting and schematic reading skills are marginal at best. That being said here is what i think I need to know to try and get the Pioneer SX-626 working again. Or at least a starting point
The main amp unit AWH - 002 has several pins connected to ground that include E1,E2, E3 and E4 if I am understanding the schematic correctly. I currently have everything disconnected from the board except for +B of 56 volts DC to pin B1, B2 and pin E5 to ground. With only these 3 connections the 4 pins E1,E2,E3 and E4 are all showing a reading of 56 volts DC and that makes no sense to me since those are suppose to be ground connected. I have tested every component on the amp board out of circuit and have found nothing that explains why 56 DC volt readings are showing on pins to be grounded.
Anybody want to jump in here give me some help. It will be greatly appreciated and who knows, I’ll probably learn a few things
Cheers and Happy New Year
George
Main amp unit AWH-002
View attachment 1372161 View attachment 1372162 View attachment 1372163
The main amp unit AWH - 002 has several pins connected to ground that include E1,E2, E3 and E4 if I am understanding the schematic correctly. I currently have everything disconnected from the board except for +B of 56 volts DC to pin B1, B2 and pin E5 to ground. With only these 3 connections the 4 pins E1,E2,E3 and E4 are all showing a reading of 56 volts DC and that makes no sense to me since those are suppose to be ground connected. I have tested every component on the amp board out of circuit and have found nothing that explains why 56 DC volt readings are showing on pins to be grounded.
Anybody want to jump in here give me some help. It will be greatly appreciated and who knows, I’ll probably learn a few things
Cheers and Happy New Year
George
Main amp unit AWH-002
View attachment 1372161 View attachment 1372162 View attachment 1372163