Reverberocket scratchy pot

[mak]

Hi I have a '61 Ampeg R-12-R Reverberocket.
The Reverb pot is really scratchy when turned (tho' it works fine)
I tried replacing the pot but no change.
Also replaced the two caps off pins 5 and 6-no change.

Would a 10K wirewound (instead of original 15K-I can't get 15K wirewound) help?
I'm actually trying to sell the amp but the scratchy pot is really putting people off.

Any help appreciated
Cheers
MAK

[olddawg]

Can you measure DC on the pot?

[Gtr_tech]

I'd check for DC at the pot. A leaking coupling cap can put DC onto the pot and cause that noise that won't go away. FWIW, it won't take much DC to get a pot noisey....as little as half a volt will do it.....

[mak]

Thanks for the feedback. I actually didn't get around to measuring DC- but replaced the pot with a 10K wirewound-and voila- problem solved!
Now I need to figure out if those extra filter caps are really needed as I'm trying to sort my mains hum problem
Cheers
MAK