BEOVISION MX4000 , NO POWER , ADVICE PLEASE

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  • zen
    Badcaps Veteran
    • Apr 2011
    • 511
    #1

    BEOVISION MX4000 , NO POWER , ADVICE PLEASE

    Hi all

    This B & O CRT TV is firing up , HT rises to 153V , with just a rustle of EHT , then shuts down.

    If the on board button is held ,PSU pulses.

    Removed line O/P transistor & used a 100W bulb as a dummy load , but still pulsing with button held .

    Anyone know this set well enough to help distinguish whether i'm looking at a PSU issue or not ?

    Depending on design PSU might be shutting down due to not receiving feedback .

    Schematic may help
    ​
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