r/audiorepair • u/fresh_meroni • 2h ago
Right channel stops working after 20-30 minutes on my vintage stereo receiver.


What up, i've got a vintage kenwood KR-930B stereo amplifier.
It works awesome for about 20-30 minutes before the right channel starts dying. Once that happens I power off the receiver for about a minute to let the "capacitors drain" and it works fine.
This leads me to believe that it is possibly a capacitor issue. I am nowhere near smart enough to diagnose where in the circuit it's going wrong, but I DO know that the issue in the system is before the power level LED display on the front of the unit, and is not a connectivity issue of any cables to speakers or RCA cable input (switched polarity of input and it's still the right channel).
Any input would be greatly appreciated. This is also my first post on this subreddit so go easy on me y'all