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mitsubishi big screen

Discussion in 'Electronic Repair' started by [email protected], Apr 4, 2007.

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  1. Guest

    i have a 50ish inch screen tv model number vs-5061 and the vertical
    hold seems to be malfunctioning on it
    i get a nice blue screen when i turn it on and the channel name stays
    nice and still but when i plug
    a device in *computer, dvd player....* it keeps scrolling rapidly...
    im pretty sure that the panel on the right hand side right behind the
    speaker with a bunch of white nobs could help cure this problem... i
    just dont know wich white nob controls that function... anyone have a
    schematic or other useful knowledge they would be willing to share?
    ~thanks~
     
  2. That panel is for convergence - it controls the alignment of the image
    from the three picture tubes.
    If the TV does not have an external vertical hold control then it is
    likely that some componentent(s) are faulty and it needs service.
    If you start turning internal controls without knowing the correct
    procedures you may make the TV much worse and make any repair much more
    expensive, because once the defective components are identified and
    replaced all the controls will have to be correctly readjusted.
    That process can cost you one to two hours of extra labor.
     
  3. James Sweet

    James Sweet Guest


    Don't mess with those knobs, you'll never get the convergence back right
    without a service manual and even then it can be a really fiddly and
    frustrating process.

    Modern TVs don't have a vertical hold adjustment, if there's no vertical
    lock, something is faulty in the circuit and you can't adjust it out.
     
  4. Chuck

    Chuck Guest


    There are probably quite a few leaky electrolytic capacitors in the
    video, sync, pip, and vertical circuits. The electolyte leaks on the
    circuit board and the board itself begins to conduct between traces.
    I'd have a technician well versed in Mitsubishi television repair look
    at the set. The repair won't be inexpensive. Chuck
     
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