Discussion in 'Amateur Video Production' started by Dimitri P., Jul 7, 2006.

  1. Dimitri P.

    Dimitri P. Guest

    I have a JVC HR-S9911U S-VHS-ET VCR with Digipure TBC/NR. When I enable the
    TBC/NR there's a significant noise reduction and overall improvement of the
    picture during playback. However, when the TBC/NR is enabled, the picture
    suffers from a noticeably momentary vertical jitter (quarter inch up-down)
    at irregular, but short intervals. I tried many tapes, old, new, expensive
    and cheap ones - the results are all the same.

    I brought the VCR for repair at a shop, adjusted the back tension, but the
    problem persists. I don't think the problem is mechanical, as it only
    appears to be when the TBC is enabled.

    As a former TV producer I recorded some archives on S-VHS-ET and now would
    like to transfer them to DVD without the inherent noise of SVHS-ET. The
    picture quality with the TBC/NR on is amazing and the transfer would be
    perfect, only if the jitter wasn't present.

    Are there any suggestions? Is the TBC circuitry faulty? If yes, what the
    shop has to check for? Is anyone else experiencing this jitter during
    playback when the TBC/NTR is on?

    Dimitri P., Jul 7, 2006
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  2. Dimitri P.

    xeaglecrest Guest

    I have a 9900U. When I cycle the TBC button there is a noticable
    horizontal shift to the picture. Perhaps the TBC on your recorder is
    turning on and off and that is what you are seeing.
    xeaglecrest, Jul 9, 2006
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  3. Dimitri P.

    Dimitri P. Guest

    Perhaps the TBC on your recorder is
    I too suspect that the TBC is cycling on/off. Is this a normal behaviour
    for this VCR? I think that the TBC should turn on and stay on. Or there's a
    problem with the TBC section?
    Dimitri P., Jul 9, 2006
  4. Dimitri P.

    xeaglecrest Guest

    I do not have an answer for you. Mine works great, and I leave the TBC
    on all the time.

    xeaglecrest, Jul 10, 2006
  5. Dimitri P.

    gpsman Guest

    That *is* weird.

    What about tapes recorded on that unit, same problem?

    Just looking at all the features at B&H and guessing, are there any
    features that might conflict with or overload the TBC, like the Picture
    Control settings, or vice-versa?
    gpsman, Jul 10, 2006
  6. Dimitri P.

    Dimitri P. Guest

    What about tapes recorded on that unit, same problem?

    Tapes recorded in the same unit are equally jittery regardless if they were
    recorded on this or on my other HR-S3600U. VHS tapes play with a somewhat
    more stable an occasional jitter here and there when TBC is on. Real S-VHS
    are somewhat jittery and S-VHS-ET are the worst.

    So I'll thake the unit back to the shop for a second time, and I hope that
    the tech will be able to fix it. Thanks all.
    Dimitri P., Jul 10, 2006
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