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DVDs: Picture gets bright-dark-bright-dark...

Discussion in 'Electronic Repair' started by woodpecker, Dec 27, 2007.

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  1. woodpecker

    woodpecker Guest

    When watching some DVDs (maybe all; I haven't noticed it on some, but
    it may not be as obvious on lower-contrast viewing?) the picture gets
    slightly brighter, then slightly darker, then slightly brighter, then
    slightly dimmer, etc. Not a flashing change, but gradual over maybe
    5-10 seconds. Maybe not important, but I have the DVD player routed
    through our VCR to the TV. Haven't noticed any problems with playing
    VHS tapes or watching TV (through the VCR).

    Any ideas? DVD player, TV, or VCR problem? (Sounds like DVD player
    based on what I wrote above?!)

  2. AJ

    AJ Guest

    Route the DVD directly to the monitor, running through the VCR causes the
    'copy guard' to go into effect causing the brightness level changes.
  3. Yes, that's Macrovison copy protection. It's supposed to prevent you
    from making a clear copy to VHS from DVD.
  4. Yes, that's Macrovison copy protection. It's supposed to prevent
    Heck, VHS inherently makes it impossible to make a clear copy...
  5. James Sweet

    James Sweet Guest

    LOL true enough.

    People who are copying DVDs are using software to make perfect digital
    copies. The MPAA is a decade behind the times as are most things of that

    If your TV lacks a composite input, you can get RF converters that will not
    exhibit this problem. If you need more inputs on the TV, switchboxes are
  6. woodpecker

    woodpecker Guest

    The coaxial cable attachment on the TV (i.e. where we would hook the
    cable to or cable from the VCR--sorry I don't know all the correct
    terms!) is bad so we've been using the VCR as our tuner, then RCA type
    cords to the TV which has only 1 set of input jacks. (You previously
    gave me advice on that, James.) Thus why we have the DVD going into
    the VCR.

    Is the switchbox you refer to like an A/B coaxial switch, except for
    RCA connectors? Can I pick one up at Radio Shack? If I get that,
    will I still need the RF converter? (If so, what is that?)
  7. James Sweet

    James Sweet Guest

    In that case get a switchbox that has RCA connectors, plug the DVD player
    into one input and the VCR into the other, it'll do just what you need.
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