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Yamaha receiver, RX 550

Discussion in 'Electronic Repair' started by David, Jul 13, 2003.

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  1. David

    David Guest

    repair shop says there is a component in tuner which fails when warmed
    up--in fact, in home use here, sound comes out distored after a few
    hours turned on.

    Can anyone help with a schematic, and/or tips to track down which
    component is failing?

  2. Sounds like a VCO problem. Maybe an adjustment would help.

    Mark Z.
  3. I was thinking discriminator, not VCO. Sorry.

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