Fender Bassman scratchy pots -- how to clean?

Tommy Boswell · From: Virginia, USA

I have a Fender Bassman 70 head that sounds good on the normal channel, which is where I plug pedal steel. But the bass channel has very scratchy pots, probably because I never use it. I tried turning knobs back and forth 30 times or more to see if scratch would go away, it didn't.

I'd like to be able to plug in a bass once in a while. How do I clean the pots? Or must they be replaced?

Chris Boyd · From: Leonia,N.J./Charlestown,R.I.

I take the chassis out and spray the pots from the inside with contact cleaner...usually deoxit D5...
_________________
https://www.reverbnation.com/bigredandtheresonators

Ken Fox · From: Nashville GA USA

If cleaning does not do it then I would suspect that one or more of the three tone caps is leaking DC onto the pots. All the cleaning in the world won't get rid of it until the caps are changed out.

Tim Marcus · From: San Francisco, CA

Or worst case scenario the fiber board has become conductive. This is very common for CBS era Fender amps

Start by properly cleaning the pots
_________________
Milkmansound.com

Forum Index > Electronics		Next oldest topic :: Next newest topic

All times are GMT - 8 Hours	Jump to: