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Whistling Sound

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rollo:
  Recently the left ch 211 amp had slight and short whistling sound. Anyone know what would that be ? tube ?

charles

doug s.:
i did some on line searching; seems it's not all that unusual.  could be a tube, but could also be a filter cap.  which the general consensus is don't mess w/the caps yourself - lethal voltages there.  you could check tubes by gently tapping them, and/or removing and replacing them.  you could try swapping the l/r channel tubes.  i'm assuming the noise is coming from the speaker...

doug s.

--- Quote from: rollo on June 08, 2020, 08:27:48 AM ---  Recently the left ch 211 amp had slight and short whistling sound. Anyone know what would that be ? tube ?

charles

--- End quote ---

rollo:
  Removed tubed cleaned contacts on tube and Amp. Gone.  Thanks.


charles

doug s.:
glad it was a simple fix.

doug s.

--- Quote from: rollo on June 15, 2020, 09:11:16 AM ---  Removed tubed cleaned contacts on tube and Amp. Gone.  Thanks.


charles

--- End quote ---

rollo:
  Me as well. Thanks. BTW back to normal relations.

charles

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