Gain button help GK MB212

shawshank72 · #1 11-14-2011, 05:32 PM

I had my amp sitting in practice room for last month or so as we have been idle of late, when i took it home to play on the gain knob was acting up.
When i turn it up or down or just tap the top of it it crackles loudly and volume raises in an almost distorted tone.
Im hoping this is a simple fix of the pot just needs cleaned?
I know im no newbie but ive never had this problem on an amp, is this as simple as getting a cleaner and pulling off the knob and spraying it?
Or do i need to be worried?
Or is there more to cleaning the pot than that?
thank you

tallboybass · #2 11-14-2011, 08:35 PM

Wish I could help ya....sounds like a dirty pot though. Have you called GK? They might have more info on the best way to proceed.

**B-string** · #3 11-14-2011, 08:40 PM

Remove the knob and a quick shot of DeoxIT (NO WD-40) and work the control back and forth quickly. Anything beyond that and it maybe a bad solder joint is to blame.

shawshank72 · #4 11-15-2011, 02:49 PM

Quote:

Originally Posted by B-string

Remove the knob and a quick shot of DeoxIT (NO WD-40) and work the control back and forth quickly. Anything beyond that and it maybe a bad solder joint is to blame.

thank you sir