Conrad Johnson PV-8 Preamp Knob noises and gain bleed

[blokis]

I've recently acquired a used Conrad Johnson PV-8 preamplifier. While I'm thrilled with its performance, I've encountered an issue where adjusting the volume, balance, and channel knobs results in a crackling noise. This crackling is especially bothersome with the volume control, as it bleeds when i try to bring it to lower levels, making it challenging during quieter social settings where conversation needs to be clear.
Could anyone here offer some advice on how to address this? Also, if anyone knows of a good repair service or has the expertise to take a look at audio gear in their spare time, I'd greatly appreciate the information.
Looking forward to your insights.
Best regards,
Ignacio

[admin]

Welcome to CJO, great to have you with us.

I would probably go with the cheapest and easiest first approach. Spray the control pots with deoxit contact cleaner and give them a rigorous back and forth turn a dozen or two times. Have it unplugged when you do this and give it a little time to dry out. You could get lucky and it just may be some corrosion buildup.

If that doesn't work, then it's going to need more advanced troubleshooting.

BTW- I would specifically get the Deoxit F5 formulation for this particular situation.

[AnotherJohnson]

DeOxit really is a worthwhile troubleshooting path. I’ve not used the F5, but I’m sure it’s a good choice.