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power the LCD board with a computer ATX power???

Discussion in 'Electronic Repair' started by [email protected], Mar 7, 2007.

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  1. Guest

    I have a lcd monitor with bad internal power supply. The power supply
    is responsible for 12V to the video board. And then the video board
    gives 12V to the inveter.

    The voltage on the power board is not very stable, it jumps around
    11.56- 12.45V and causes the LCD to shut down and restart every 0.5
    second.

    Question: Can i use a computer PC ATX power supply 12V to power the
    video board and turn on the LCD and verify the condition of video
    board ?

    Thanks!
     
  2. You could try hooking the inverter up to the computer psu without any
    problems so long you get the polarity correct but more than likely your
    problem is with the inverter itself. Inverters seem to be the most common
    failure in LCD displays.

    You can get a cheap replacement for the original inverter by buying one of
    those PC case mod light sets that use 2 CCFL lamps. They are usually about
    $15 and a cheap source for an inverter and CCFL lamps.

    - Mike
     
  3. A quick search on google turned up this..

    http://www.directron.com/clk12wt.html

    That should get you started if you need a new inverter or ccfl lamps
    depending on the size of your monitor..

    - Mike
     
  4. James Sweet

    James Sweet Guest


    Sure, but that voltage range you're seeing shouldn't be a problem.
    Sounds like there's another fault in the monitor causing the load to
    fluctuate.
     
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