Crackle on intensity pot Vibro champ

Discussion in 'Shock Brother's DIY Amps' started by Linkjr, Mar 14, 2021.

  1. Linkjr

    Linkjr Tele-Meister

    Age:
    51
    Posts:
    203
    Joined:
    Aug 16, 2017
    Location:
    Uk
    Hi Guys,

    I got some crackle when turning the intensity pot up on my Vibrochamp it happens only from settings 1-5 and doesn't matter if the tremolo is active or not.

    any ideas what could be causing it? i got a lovely deep tremolo but i am led to believe this symptom could be caused by dc on the pot.

    Could the cap on pin 8 of v1 have anything to do with it?
     
  2. D'tar

    D'tar Friend of Leo's

    Posts:
    3,484
    Joined:
    Jan 11, 2013
    Location:
    WNY
    By design.... You will ALWAYS have DC on the intensity pot.
     
    Phrygian77 likes this.
  3. schmee

    schmee Doctor of Teleocity Silver Supporter

    Posts:
    17,305
    Joined:
    Jun 2, 2003
    Location:
    northwest
    Have you sprayed inside the pot? It could just need cleaning. Not uncommon at all. Failing that you may have to change out the pot.
     
    SnidelyWhiplash likes this.
  4. Phrygian77

    Phrygian77 Friend of Leo's Gold Supporter

    Posts:
    4,157
    Joined:
    Apr 30, 2016
    Location:
    Crawfordville, FL
    ^^^ This!
     
  5. Linkjr

    Linkjr Tele-Meister

    Age:
    51
    Posts:
    203
    Joined:
    Aug 16, 2017
    Location:
    Uk
    Thanks guys , am definitely from the simple things first school of thought tried cleaning i will try to swap in another pot.

    Just out of interest besides faulty or dirty pot what else could be a likely cause?

    the pot is new and amp has not been used much definitely did not have this problem when I put it in.
     
    Last edited: Mar 14, 2021
  6. Linkjr

    Linkjr Tele-Meister

    Age:
    51
    Posts:
    203
    Joined:
    Aug 16, 2017
    Location:
    Uk
    Update have swapped out the pot, on the new pot no crackle - problem solved

    But the original pot was new and of a high quality I opened it up see below does this look right ?
    Screenshot_20210320-095224.png
     
IMPORTANT: Treat everyone here with respect, no matter how difficult!
No sex, drug, political, religion or hate discussion permitted here.