Big Humm with expression pedals

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- July 13, 2017 at 3:50 pm #114262
  
  Dalmanours
  Participant
  
  Hi everybody,
  First I apologise for my bad english, I’m french…
  So here is my problem:
  I’ve got a mission engineering (the special H9 gear) who’s directy connected to my H9.
  And I’ve 2 another expression pedals connected to my Voodoo Lab GCP. There IS not two pedals assigned to the same gear of course. But I have a really big humm who stops when I disconnect either the mission who cames with H9 or the one who is connected with GCP.
  I don’t know what to do. So Could you help me?
  Thanx by advance.
- July 13, 2017 at 4:12 pm #146780
  
  nickrose
  Moderator
  Eventide Staff
  
  Je suis desolé, but it sounds as if you have a ground loop in your connections – this is beyond our ability to diagnose.
  
  Try using different cables, and re-arrange the wiring. Make sure things are only grounded at one place (no more, no less).
  
  If you cannot fix it, you will probably need to get a local technician to have a look.
- July 13, 2017 at 5:14 pm #146782
  
  Dalmanours
  Participant
  
  Thanx for your answer, I just hope I will find a way to solve. I will be back with News.
- July 17, 2017 at 9:35 pm #146806
  
  Dalmanours
  Participant
  
  dalmanours wrote:
  
  Found it ! I have screwed my pedals on my PB who’s metallic… unscrewed them and it’s ok.
  Thanx for help guys !
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