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Troubleshooting occasional popping from solid state amp?

Hello all,I have this problem with amp making single pops occasionally, around once every 5-20 minutes. It could be due to cold solder joint so I would like to check it myself since I have some experience with working on guitar amps, before taking it to a pro for repair. The amp is 20 years old.

Any advice on how to check this in the quickest way possible?
conocedor

Showing 4 responses by conocedor

conocedor OP
4 posts
 
What I noticed is that the volume pot makes a pop when it's touched, could this mean the pot is the problem? Could be a grounding problem of the pot? Any advice on how to check it?
conocedor OP
4 posts
 
I noticed also the amp pops when the fridge turns on and off, any solution to this?
conocedor OP
4 posts
 
thanks for the suggestions, I noticed now also when switching light on and off it causes popping. It seems the amp has some kind of grounding or shielding issues since I didn't have this problem with other amps? I've read others having popping due to refrigerator. Any idea why the amp could be so sensitive to other electronics?
conocedor OP
4 posts
 
What's weird is that other amps didn't react to the fridge or lights, could be a design flaw?
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