Samsung 740n black after a sec

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  • RethoricalCheese
    Badcaps Legend
    • Mar 2013
    • 1514
    • Estonia
    #1

    Samsung 740n black after a sec

    I dug out a 740n LCD with IP-35135B PSU, which I had stored away. I knew I had taken out the lamps but turns out that PSU is faulty too. I just tested it with CCFL-s which are in 100% working condition. They turn off after a second.

    I tested transformers´ (TM-1222) secondaries, which were 1300 and 1306 ohms.
    All caps are replaced.
    I even noticed I had replaced previous mosfets with a couple of new ones.

    Without any load, 5V rail reads 5.2V and 13V rail reads 18.3V.

    I even randomly checked diodes for shortages - all OK

    Is there anything else I should check?
    Last edited by RethoricalCheese; 03-04-2013, 03:15 PM.
    Tags: None
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