Chosen Solution

old peavy amp.. knobs crackle and pop

The pots (potentiometers) are dirty.

  1. Get a can of deox it or other electronics cleaner.
  2. Unplug amp!
  3. Get inside of amp and check on the back side of pots. If there is a small hole spray some cleaner in there and rotate knob back and forth frpm 0 -10 several times. If there is no hole, Remove knobs and spray down the shaft in the front give it a minute to get down in there then rotate knob several times. do this to every pot.
  4. Put back together and Jam

Probably needs new pots (potentiometers). If you’re not confident changing them yourself, ask at the local music shop - they will almost certainly know someone who you can pay to do this for you. Alternatively, you could attempt to do it yourself - or just clean them. There are many guides on how to do this, e.g, this one: http://www.instructables.com/id/How-To-C…