Y/C Delay on 40" RPTV

Discussion in 'General TV Discussions Forum' started by slay, Oct 21, 2001.

  1. slay

    slay
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    Hi

    Does anyone know if the y/c delay is adjustable on a 40WH08B.

    Cheers
     
  2. damjanb

    damjanb
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    Hi again, Steve;
    I thought some more about this, and
    would like to emphasize some basics
    that you need to be sure of before
    looking for exotic options such as
    Y/C delay adjustment.

    Your problem was green haloes, as in
    the first image on http://nl.ijs.si/~damjan/calibrate.html
    What you need to make sure first is
    that the set is converged as nearly
    as possible, in service convergence.

    On my set, a different one, I noticed
    haloes only after I made the convergence
    as tight as possible - only then did
    they become apparent, and only later
    did I find out that Y/C delay could
    fix them.

    And, of course, leave the set on for
    about an hour before doing any sort
    of convergence.

    If I remember correctly, Delta was
    knowledgable about convergence on
    Toshibas, and Gordon from http://www.convergent-av.co.uk/
    should also be able to help.
     
  3. slay

    slay
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    HI

    Definately converged ok in service mode on all screen sizes for pal and ntsc.

    Have orderd a DVD with component outputs to see if that helps.

    Steve
     
  4. damjanb

    damjanb
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    > orderd a DVD with component outputs
    > to see if that helps
    >
    yup, sounds reasonable to me: if the
    problem is not spatial (convergence),
    it might be temporal - timing of the
    (component) signals, which connects
    with the solution that worked for me
    (adjusting Y/C delay).

    Component output from a DVD should
    also have more precise timing, and
    suffer less processing inside the TV.

    Let me know how it works!

    I should have asked you before: how
    does the problem depend on the form
    of the signal? (composite, Y/C, RGB
    - which one is worst?)

    On my set, I noticed that RGB was
    actually worse than S-video (more
    color ringing around edges), so i
    looked at the schematics, and saw
    that RGB is immediately turned to
    YUV and is then further processed
    (for 100 Hz, zooms, etc.)
     
  5. slay

    slay
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    all sorted, new dvd with component outputs.

    Picture is superb !!!!!!!!!!!!! :))))))))))))
     
  6. damjanb

    damjanb
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    Greeeat - enjoy!!
     

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