Hi

I don't know much about electronics. I have a kenwood ka-5500 amp
which has a problem with the tone on/defeat button. The speakers
crackle when i press it and i have to spend time messing with it to
make it "sit" right otherwise the left speaker goes quiet. Even then
it will move on its own account after time resulting in the same
problem.

I tried some of that fast drying electronic lubricant type stuff
(spray) and that seemed to help a little but it's still a frustrating
problem.

I don't need the bass and treble controls on the amp (happy with a
flat sound) so i was wondering if i was able to disable the switch all
together on the amp whether that would fix the problem. Just a bit
worried about opening up the amp and messing around. Novice here

The headphone jack is very noisy too....a lot of background hiss
noise.

Anyone care to offer some advice?

Mike