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How to clean scratchy pots?

Discussion in 'Amp Central Station' started by emisilly, Sep 10, 2006.

  1. emisilly

    emisilly Tele-Afflicted

    Age:
    48
    Jun 24, 2004
    Virginia Beach
    My old SWR bass amp has been put away for a couple of years. Now, the pots are very scratchy and the volume cuts in and out. This had happened years ago and a tech cleaned the pots and all was ok. Now I'm alot more confindent working on amps, since I've gained some experience.

    What do you use, and how is it done? I've been told WD-40 is a big no-no. I suppose any Radio Shack might have a product that would do the trick, but what? Thanks in advance guys.
     
  2. Tremo

    Tremo Banned

    DeOxit. If that doesn't work, replace the pot.
     
  3. emisilly

    emisilly Tele-Afflicted

    Age:
    48
    Jun 24, 2004
    Virginia Beach
    Where can I get DeOxit, and how do you use it? Do you simply remove the knob and spray a bit on the shaft and give it a few twists? That would make sense, if thats how it's done.
     
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  5. Ringo

    Ringo Poster Extraordinaire

    Mar 16, 2003
    Memphis TN
    re cleaning pots

    The best way is if you can get to the inside of the pot and spray some cleaner / lubricant in and then work the pot around.
    That requires pulling the amp chassis to get access to the back side of the pots, even then , some pots are sealed , they don't have a slot where you can spray the cleaner.
    I've had success by rigging up a piece of shrink wrap big enough to fit over the pot shaft to the small tube from whatever cleaner I'm using.
    I had to actually use 2 different sizes of shrink wrap.
    Just fit that over the pot shaft, spray, then work the pot around, might take a couple of tries.
    This works good for guitar pots too if you can't access the back side, like on hollow bodies.
    I got the idea from a Dan Erlewine article, Stewart McDonald catalog I think.
     
  6. 6942

    6942 Poster Extraordinaire

    Age:
    63
    Apr 15, 2006
    Santa Fe, NM
    Almost any (plastic safe) contact clearer will work.
    Many pots are sealed, if that's the case, just spray the sh*t out of it down the shaft.
    Rotate the shaft ALOT, then let it dry completely.
    If it's still noisy, repeat the proceedure.
    If it's still is noisy the second time around, replace the pot.
     
  7. RelicStrat

    RelicStrat Tele-Meister

    427
    Apr 29, 2003
    Laguna Hills, SoCal
    Get it at Antique Electronic Supply
     
  8. GatorBait

    GatorBait Tele-Meister

    162
    Mar 15, 2006
    NorCal
    yes, Radio Shack carries a product that will do the trick .. it's called "Tuner Control Cleaner & Lubricant" - cat. # 64-4315. Sorry I don't remember the price for it ...
     
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