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VCR Cover Causing Noise

Discussion in 'Audio' started by arvin reiss, Feb 27, 2018.

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  1. arvin reiss

    arvin reiss

    2
    0
    Feb 27, 2018
    I had noise and could not find a source. Then realized that with the cover off this noise disappears. It causes tracking errors. Repeated numerous times. Lid does not have to be touching unit; hovering over it causes this noise. Very very strange. Sony SLV 595 HF.
     
  2. FuZZ1L0G1C

    FuZZ1L0G1C

    368
    117
    Mar 25, 2014
    Poor earthing?.....
     
  3. arvin reiss

    arvin reiss

    2
    0
    Feb 27, 2018
    Thank you.
    What would I do about that, if it is?
    I adjusted the tracking, and it got better even with the cover. Then I tried to adjust other things even more, and now it doesn't track at all.
     
  4. FuZZ1L0G1C

    FuZZ1L0G1C

    368
    117
    Mar 25, 2014
    Although most VCR's appear to have only 2 mains feed-wires, I found that earthing the cover of my JVC HR-J657-MS via a cover-screw to a cold-water feed eliminated occasional noisy video streaks that would appear on playback or recordings.
    Whether this was outside interference or internal noise is unknown, but it worked.
    The electrical earth-wire was run from bathroom (hose-clamped to bare-scraped steel pipe) to my lounge earth-bar-hidden-behind-a-sofa, intended for a soldering ground-point.
    EDIT:
    As for the tracking, my limited VCR work would suggest that you may have mis-aligned heads beyond limits, meaning you would need signal generators and/or oscilloscope etc to re-align again.
    This may involve taking it in to a video tech.
    Somewhere in my collection of books and scans, I have notes on VCR service, so if I come across relevant info, will add another post.
    Perhaps other members are more VCR tracking savvy than YT....
     
    Last edited: Apr 24, 2018
  5. shrtrnd

    shrtrnd

    3,712
    468
    Jan 15, 2010
    First thing I'd check is if the cover is dented-in from having something heavy on top of the recorder.
    Sounds like the cover may be rubbing against the moving parts internally(?)
     
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