The pots on my '73 Princeton Reverb have gotten "scratchy". Can they be cleaned up without removing them from the chassis? Contact cleaner spray or something like that?
Hellowe Krowe- Cleaning pots is no problem. You should not remove the pots from the chassis or un-solder any leads, but you DO need to remove the amp chassis from the cabinet so that you can actually see the pots. On a modern printed-circuitboard amp this can be difficult, but not on your 73 Fender!
Just squirt a little of your favorite electronic cleaner in the small opening at the base of the solder terminals and rotate the pot. While you are at it, remove each knob so that you can tighten the nut that holds the pot to the chassis. And since I'm lecturing, tighten those nuts that hold the input and speaker jacks to the chassis!!
If it's still noisy, you may have to replace it.
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Hellowe Krowe- Cleaning pots is no problem. You should not remove the pots from the chassis or un-solder any leads, but you DO need to remove the amp chassis from the cabinet so that you can actually see the pots. On a modern printed-circuitboard amp this can be difficult, but not on your 73 Fender!
Just squirt a little of your favorite electronic cleaner in the small opening at the base of the solder terminals and rotate the pot. While you are at it, remove each knob so that you can tighten the nut that holds the pot to the chassis. And since I'm lecturing, tighten those nuts that hold the input and speaker jacks to the chassis!!
If it's still noisy, you may have to replace it.
Skip