I don't have a schematic for this amp. I'm assuming that it's like the 4200AM.
http://ampguts.realmofexcursion.com/PPI_4200AM/
Post the DC voltage on all 16 pins of the power supply driver IC (likely an SG3525).
Pin 1:
Pin 2:
Pin 3:
Pin 4:
Pin 5:
Pin 6:
Pin 7:
Pin 8:
Pin 9:
Pin 10:
Pin 11:
Pin 12:
Pin 13:
Pin 14:
Pin 15:
Pin 16:
http://ampguts.realmofexcursion.com/PPI_4200AM/
Post the DC voltage on all 16 pins of the power supply driver IC (likely an SG3525).
Pin 1:
Pin 2:
Pin 3:
Pin 4:
Pin 5:
Pin 6:
Pin 7:
Pin 8:
Pin 9:
Pin 10:
Pin 11:
Pin 12:
Pin 13:
Pin 14:
Pin 15:
Pin 16:
Hi Perry,
I did see those pictures while I was searching for documentation on the amp.
Mine looks similar, though less power transistors on the sides, it is only 4x25W.
The PCB silkscreen says that it is a PPI 4030 Rev x board. (Don't remember which revision it was.)
I also did find the documentation on the SMPS controller chip, that also should help.
I just hoped that the schematics is available somewhere, and that would make life a lot simpler.
Thanks, Peter
I did see those pictures while I was searching for documentation on the amp.
Mine looks similar, though less power transistors on the sides, it is only 4x25W.
The PCB silkscreen says that it is a PPI 4030 Rev x board. (Don't remember which revision it was.)
I also did find the documentation on the SMPS controller chip, that also should help.
I just hoped that the schematics is available somewhere, and that would make life a lot simpler.
Thanks, Peter
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