Sharp GF-8585 left channel muted

[opamox]

Any suggestions what's wrong and how to fix it? Opened that thing today but everything seems right. I have contact cleaner, I just don't know where to spray it.

 

[floyd]

you spray the lubricant into the back of the potentiometers ,there are small holes at the back of the pots ,just make sure you use it sparingly and wipe off any excess spray from the surrounding areas ,then work the knobs back and forth ,on switches you can just remove the switch cover and probe with the spray can tube into the switch assembly and when you think you are spraying into the switch spray sparingly and work them back and forth ,make sure you do this with the unit unplugged and the power off.