Different output signal level in left and right channel . Unbalanced output signal .
Repair.
Changing double front pot 100k ohm ” volume” solved the problem.
Cleaning did not helped.
One of them for some reason changed value to 60K ohm.
06.11.2022. No sound on both channels.
Pilot light is ON.
Voltage -35 volt and +35 volt from power supply are present. All output transistors are ok.
Relay control transistor TR354 ( 2sc828a) replacement solved the problem.
06.01.2022. No left channel.Right channel is ok.
Solution – cleaning “Normal – Separate” switch on the back panel of receiver solved the problem .
Dial pointer lamp replacement on pictures.
2 mm. LED lamp installation. Polarity is important.
