Problem with LCD Panel board

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  • stj
    replied
    Re: Problem with LCD Panel board

    if it drops to zero there is a short.

    if a fet shorts out and it shorts one of the main pins (S or D) to the gate pin, it often damages whatever is controlling it.

    Leave a comment:


  • mokie
    started a topic Problem with LCD Panel board

    Problem with LCD Panel board

    Hello, I have a problem with a Dell 1907FPt monitor. I've already changed a couple of mosfet (AOP605) that were shorted.

    But the problem now is when I plug the lcd panel conector, you can hear a sound from the psu like a little short circuit and the led in the front is blinking with no backlight and no image on the monitor.
    If I unplug this board, the sound disappears and the led stays on.

    This board is a M190EN04 board. There's some information on the internet about this. A pdf is also in the attachments.

    I've checked voltage on power pins (+5v) and they actually drops to cero when I plug the board, so I'm looking for a blown fuse or something like that on the board.

    Thanks in advance.
    Attached Files
    Last edited by mokie; 05-03-2014, 09:34 AM.

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