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NEC Plasma fried PS

Discussion in 'Misc Electronics' started by [email protected], Dec 28, 2005.

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  1. Guest

    A friend has two large Plasma screens with burned out power supplies.
    He's a Broadcast Maintenance Engineer at a 24 hour news channel and can

    fix any electronic equipment if he has a schematic or can identify the

    These units are NEC PX-42VP4A

    Does anyone have a schematic, service manual or insight into where to
    get the following part, BLQH, which looks like a surface mount
    transistor or insight into what the equivalent parts is?

    NEC has been unresponsive to requests for a service manual or

    Thanks all
  2. Guest

    Not sure. It could be some sort of voltage limiter or regulator.
    You might also need to trace what it connects to, as it might be to do
    with start-up of the power supply.
  3. Richard

    Richard Guest

    Most manufacturers of this type of product (consumer/commercial) will not
    provide service literature to anyone but their authorized servicers. Check
    with NEC for the nearest authorized servicer. You MAY be able to talk him or
    her into trying to get you a manual, but expect to pay at least $250 for it.
    Then, without training and the proper equipment (including the software to
    set the unit up), your friend may still not be able to get it going

    Considering the cost of those units, it would might even be a good
    investment to pay to have it repaired. Especially when you consider that it
    likely contains many parts that won't have any cross to something you can
    pick up at the local electronics supply house, and NEC probably won't sell
    parts to you, either.

    Good luck, no matter which way you go.

  4. scada

    scada Guest

    I was able to get the service manual for my 42" Samsung from:
    My schem was not on the list. I requested they get it, and received the link
    to a pdf file in something like two days!
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