Unbalanced audio on SX 828

[Gianni b]

I've restored a SX 828 bought years ago. All work well, only the sound is unbalanced on channels.
The level of sound on the left channel is lower in comparison with the right one.
Any help ?

 

[john stumpf]

lots of switch contacts in a 828 that carry signal. if it were i, i would deoxit every switch in that thing and lube the contacts afterward. if that cures it, make a mental note to exercise the switches every so often.you didnt mention whether it was am fm or any other source thats effected as well or not at all.it might be helpful.