Replace the switch, you might spray yourself in the eye....
Seriously, what have you got to lose if it messes the switch up and you
have to buy a new one? At least you tried to fix it first.
I had the same problem with mine and I was able to take it apart and fix it. I
don't recall exactly what the problem was (it was a while ago), but it was
obvious, once you got it apart, what was wrong.
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WD-40 will work well; just let it dry or shake/blow out any
excess before you use it to avoid arccing.
Do NOT use graphite: It'll coat the insides semi-permanently and
Best would be tuner cleaner if you can find it, but I've used
WD-40 with good results many times on everything from 220V to
IF you have some WD-40 sitting around I'd use that. Spray it on and
then work the switch with the power off until it loosens up. I've also
found that silicon spray works well for switches and that's what I
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