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Philips LCD projector proscreen 4600 image problem

Discussion in 'Electronic Repair' started by Max, Jun 18, 2004.

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  1. Max

    Max Guest

    I found this LCD projector, philips proscreen 4600.
    Testing it I found that on the image all the red areas are surrounded by
    extra-pixels orizontally,more on left side (something like | | |
    ||||| )
    Any advice for me (i.e. where to find troubleshooting info's, manuals,
    or -if I'm lucky- component to check)?

    Thanks

    Max
     
  2. Jerry G.

    Jerry G. Guest

    Most likely, the panel is not being addressed properly. This can be the
    harness into the panel, or the driver matrix board, or the panel itself. You
    will have to purchase the service manual from Philips. You will also need
    the proper tools and test gear to work on this. I would suggest you get an
    estimate from Philips. I have my doubts you will be able to service this
    yourself, unless you are very lucky.

    --

    Jerry G.
    =====


    I found this LCD projector, philips proscreen 4600.
    Testing it I found that on the image all the red areas are surrounded by
    extra-pixels orizontally,more on left side (something like | | |
    ||||| )
    Any advice for me (i.e. where to find troubleshooting info's, manuals,
    or -if I'm lucky- component to check)?

    Thanks

    Max
     
  3. Max

    Max Guest

    Thanks Jerry,
    I agree I have to be lucky!
    I hope here in the news some one who passed the same problem (or a similar
    one) will give me a good advice. I appreciate your answers anyway, thanks
    once more.

    I think the projector has been already serviced once, because of some "non
    original" components on the drivere board and maybe for the same problem,
    because if I put my finger over one of them (so making a sort of "ground")
    the problem decrease!
    If I disconnect the "red" lcd and then reconnect it (while the unit is on)
    the problem disappear and comes back (and stays) if I touch with my finger
    (same as above) in the driver area.

    Challenging, isn't it?

    Regards

    Massimo
     
  4. Guest

    Actually, this sounds like a poor connection or bad trace.

    -Chris
     
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