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Sony VCR SLV-E120

Discussion in 'Electronic Repair' started by Bram Stolk, Jun 5, 2005.

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  1. Bram Stolk

    Bram Stolk Guest

    This VCR works fine for about 5-10 minutes, after a while it slows down it's
    capstan speed and continues to playback in a jerky mode with distorted sound
    and picture noisebars.
    All my supply voltages seems correct and Caps ESR on Powersupply are a OK.
    Lack of proper documentation prevents me from trouble shooting Capstan servo
    circuits. Is there anybody out there having experienced similar problem(s)
    and helping me out ?

    TYIA
     
  2. I'm not sure how old this unit is, but Sony VCRs used to have problems
    with the capstan rotor warping and rubbing against copper windings
    underneath.

    It produced a condition similar to what you're describing. We would
    just end up replacing the capstan motor assembly in those cases. Not
    much else you can do.

    Randy
     
  3. Bram Stolk

    Bram Stolk Guest

    TY Randy,
    I indeed have seen the warped PCB's holding the capstan motor stator coils
    causing to interfere with its rotor and being grinded.....but that was on
    older sony machines...
    My problem is definitely related to an electronic servo drive rather than
    mechanical...
    Thanks for your response anyway
     
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