Powersupply has all the voltages - Monitor still no power

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  • Capacitorial
    Member
    • Dec 2019
    • 44
    • Germany
    #1

    Powersupply has all the voltages - Monitor still no power

    Hello guys,

    I have a Philips 240B7QPJEB. The monitor seems completely dead.
    I opened it and measured the voltages of the powersupply. I found that a mosfet was dead and replaced it.
    On the connector, that goes to the TCON board, all voltages 15-19V and 5V are present.
    The small connector on the left of the PSU has two cables with 18V and all the other have 0.2V. It connects on this small connector on the left ontop of the panel. I guess the backlight? Seens fine I guess.
    The weird thing is, that the Power LED is powered over the TCON board.
    On The TCON board I can only find a bunch of 3V and 19V voltages.
    The voltages that go from the big chip to the connector of the panel, there are no voltages. It is a RTD2526FT chip.

    I cannot find the fault. Is it the big chip? How can I verify that?
    I tried to disconnect everything from the tcon board except the connector from the powersupply but still no voltages on that connector to the panel.

    Any help is appreciated. Thanks.
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    Tags: 240b7qpjeb, monitor, no power, rtd2526ft
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