Both channels. I am refering to Left channel and right channel. Not Speaker A or B or C. Left is going to be left no matter which set you select.
Due to the protect relay dropping out.Only one relay for both channels.When it goes off temporarily, it also goes off on BOTH channels.
Tap around on the top, front, LH side, power supply board. Listen for Pops or other noises. Sounds like cold solder connections. Or a transistor acting up.
Educated guess I reckon..You were absolutely correct. I tapped around in several different places on the top, front, LH power supply board and got popping noises each time I did it.
That corroded resistor lead could be the issue if the corrosion is severe enough.
SB is for the CR-2020the service bulletin I read recommended changing the resistors near the large capacitors and resoldering that very same connector .
What all information will I need to identify these to order new ones?
That is the protect relay. Solder connections are on the underside of that circuit board.The best fix is replacement..I have the same problem and found it to be the module in plastic case that the screwdriver is pointing to in the pic. Does the plastic case come off to access the wires and solder joints to check them? Thanks!
I did look at @Avionics post #23 and I'm confused as to what it's telling me. Can you tell me what it means? Thanks!
That is the protect relay. Solder connections are on the underside of that circuit board.The best fix is replacement..
Replacement of the entire circuit board? I'm new to this and haven't had to work on it since I bought it back in the 70's. Thanks for being patient.That is the protect relay. Solder connections are on the underside of that circuit board.The best fix is replacement..