I'm hoping someone here can give me some guidance with regards a possible fix for this amplifier.
A friend has brought it to me with this problem. I removed the case and there are obvious signs of damage, which looks like water ingress as the board looks rusty. Particularly around a cap, a diode and a resistor.
I have obtained the circuit diagram from here but it is a long time since I did electronics at collage.
Other than the rust coloured spot there are no other signs of damage. The cap doesn't look blown at least but would it be advisable to replace all three components?
Would a simple clean up potentially fix the problem since it is outputting, just not correctly.
Maybe the rusty area has created a minor short?
Any advise would be greatly appreciated.
Thanks in advance.