I have a Color Classic II that powers up, but has no audio
already recapped it
while checking the board, I found that most of the ground pins on the capacitors I replaced have continuity with the ground on the motherboard connector near the 5V and 12V lines, but they don't have continuity with the ground on the scsi external connector or the audio plug outer shell for example
all the audio capacitors have this continuity, but seem isolated from the same ground near 5V and 12V
it seems the board has 2 different grounds, but I can't imagine how this would happen
already cleaned the board very very well... all replaced capacitors have continuity with their respective grounds
basically audio caps are grounded with outer shell, and the rest of them are grounded with the power supply.
it's as if there were something in between, because I can read a voltage drop between them.. it's not totally open
any tips on how to diagnose this weird ground issue?
already recapped it
while checking the board, I found that most of the ground pins on the capacitors I replaced have continuity with the ground on the motherboard connector near the 5V and 12V lines, but they don't have continuity with the ground on the scsi external connector or the audio plug outer shell for example
all the audio capacitors have this continuity, but seem isolated from the same ground near 5V and 12V
it seems the board has 2 different grounds, but I can't imagine how this would happen
already cleaned the board very very well... all replaced capacitors have continuity with their respective grounds
basically audio caps are grounded with outer shell, and the rest of them are grounded with the power supply.
it's as if there were something in between, because I can read a voltage drop between them.. it's not totally open
any tips on how to diagnose this weird ground issue?