hey guys. reviving an ancient thread here. a friend has brought me a PC2002 in pretty bad condition. this glue is everywhere. also on power-on it just starts into both protection lights being on.
i examined the PDA and PDB board and found a completely disintegrated diode which i replaced, it was covered in the black solidified glue crust. completely corroded.
so im guessing i have a lot of glue picking to do...
i also started troubleshooting from the DC board, with both channels unplugged. all voltages seem to be good except the B+ and B- / Ba+ and Ba- ( im just paraphrasing the schemo here )
for B+ i get 87.8v
for B- i get -87.6v
for B alpha 's im getting + and - 94.6 volts...?
so is B /Ba the voltage for the driver board?
the DC board is completely covered in the gunk and a lot of terminals are reading 10 ohms between each other....is this the conductive mess?