Thompson TV dead. All voltages OK but one for buttons

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  • edugimeno
    Badcaps Veteran
    • May 2017
    • 568
    • Spain

    #1

    Thompson TV dead. All voltages OK but one for buttons

    Hi!
    I have this TV that won't light up the stby led, won't turn on, etc
    Opened it and found all expected voltages in the backside test pads BUT one. There are a lot of +5V sources but one of them, the one that's driven to the backpanel keys module.
    There are lots of other +5v points working but this one specifically is dead.
    I took a close picture of the area where this voltage is generated
    There is a LD05 missing but this may be from factory? Should I short it?
    All the thru-board capacitors have a steady and valid voltage on them
    The small SMD caps by the faulty +5v source are not shorted

    What else can I try?

    Thanks!
    Attached Files
  • SMDFlea
    Super Moderator
    • Jan 2018
    • 20475
    • UK

    #2
    Re: Thompson TV dead. All voltages OK but one for buttons

    Originally posted by edugimeno
    Hi!
    I have this TV that won't light up the stby led, won't turn on, etc
    Put make and model number in thread title ! ! !
    https://www.badcaps.net/forum/showthread.php?t=24661

    .
    All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

    Comment

    • edugimeno
      Badcaps Veteran
      • May 2017
      • 568
      • Spain

      #3
      Re: Thompson TV dead. All voltages OK but one for buttons

      You are right, I missed the model number. I can't edit my post at this time so I started a new thread with the right information. I don't see a way to remove this post thou...

      Comment

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