I have a problem with a "digital" volume control on a Yamaha 5280 receiver. Turning the volume control knob will produce ramdon volume changes. Sometimes turning the knob "up" will decrease volume. Sometimes large knob movements will produce very little change in volume. Volume can still be controlled normally with a remote.
Can the control be cleaned with an electronics cleaner like CRC?
Can dust/dirt on the pc board near the volume control IC cause this type of problem?
Yes the inside and outside should be kept perfectly clean, and salt air will cause it too. But you need a high quality cleaner that lubricates...don't use CRC...
Use Caig deoxit 100, not CRC.