Panasonic TH-42PX80EA standby PS

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  • blownelco
    Member
    • Apr 2008
    • 12
    #1

    Panasonic TH-42PX80EA standby PS

    Hello,

    I have a Panasonic with dead standby powersupply.
    The buffer elco C407 was bulged and the fuse F403 was blown.

    I replaced the fuse and capacitor. As capacitor i took a 33ùF instead of the 22ùF. Is this a problem?
    At power up the fuse was gone again and IC409 MIP3E30 blownup.

    I have bought a new one and installed.

    After connecting power (without powerswitch on) i have now about 235VDC
    Isn't that to low, i was expecting +/- 300V?
    (230V AC grid)

    Someone an idea what is wrong?


    thanks in advance
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