Sense Model 51-32 LCD Stuck in Standby

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  • davuk1972
    New Member
    • Dec 2012
    • 6
    • United kingdom

    #1

    Sense Model 51-32 LCD Stuck in Standby

    Hi
    I've aquired this broken LCD TV,
    Plugged in Standby lamp is on and tring the remote or standby switch does nothing. There is a voltage change from the switch pack to the main board when buttons are pressed
    Checking the PSU, I had 4 bulged Caps which I have replaced.
    Testing the output voltage of the PSU

    Connector to the Invertor
    4xGrounds
    4x23.8 Volts

    and the Connector to the Main Board

    2xGrounds
    2x5.04 volts
    1x4.6 volts (Labelled SB)
    1x5.04 volts (Labelled 5vSB)
    2x5.04 Volts
    3xGrounds
    1x11.8 volts

    I'm sure there is enough power to start the TV
    The PSU does not appear to be in standby but nothing works as all the voltages are present.
    Is the 4.6 volts to SB correct I'm guessing this is the wire that turns the PSU Standby on and off.
    Should I replace the rest of the Caps on the PSU even though my voltages are quite good or do I have another problem with the Main Board
    Any advice would be appreciated
    Or I'll be chucking it in the bin!!
    I've attached some pics of the boards, I'm not sure if they will help, perhaps someone else has had this fault

    Thanks!!
    Attached Files
  • selldoor
    Slow Learner
    • Dec 2010
    • 7870

    #2
    Re: Sense Model 51-32 LCD Stuck in Standby

    needs a good dust!! Dust means heat - heat is bad. I would change the two caps on each side of the transformer in the easy to get at bit of the PS.

    EDIT

    Should have asked what make of caps did you use as replacements
    Last edited by selldoor; 12-17-2012, 12:28 PM.
    Please upload pictures using attachment function when ask for help on the repair
    http://www.badcaps.net/forum/showthread.php?t=39740

    Comment

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