LG 50PQ6000 went pop

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  • Mr_Bodgit
    Member
    • Dec 2010
    • 47
    • doncaster

    #1

    LG 50PQ6000 went pop

    Hi guys,

    just been reading through the 50pq6000 unstable 5v thread so im hoping Baileybum1234 or any one else might be able to check 2 voltages for me?

    The pub i DJ at has two of these and one went pop last night, done a few tv's before so figured this one would just be bad caps like most of the others

    strange thing is the psu is fine (from what i can see and on the meter)
    but the fuse has blown on the EAX60987801 (left hand board)

    the pin out from the PSU to this board is +VS, GND, +VA, GND, +5v
    when i turn the tv on after two relay clicks i get the following for a few seconds
    200vdc between the +VS pin and GND (this goes to a fuse thats blown)
    60VDC between the +VA pin and GND
    5VDC on the +5V
    a pulse like clicking can be heard from both the PSU and the EAX609 board befor the PSU shuts down probably due to no load on the +VS pin

    when you turn the tv on you get the red standby power led, press power button and it goes blue for a bit then fades away, psu needs to be left a while to reset its self

    just noticed there are 6 220uf 250v caps in the middle of this board, 3 have square edges to the top and 3 are curved and slightly taller but there all the same type of caps so i'll start there

    Regs
    Richard
  • tom66
    EVs Rule
    • Apr 2011
    • 32560
    • UK

    #2
    Re: LG 50PQ6000 went pop

    Can you post a picture of the suspect caps? Most likely, they are not a problem. The blown fuse on the y-sus points to some bad MOSFETs or other components. Maybe a bad buffer.
    Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
    For service manual, schematic, boardview (board view), datasheet, cad - use our search.

    Comment

    • giggz
      New Member
      • Feb 2013
      • 4
      • United Kingdom

      #3
      Re: LG 50PQ6000 went pop

      hi did you fix this problem with the tv

      because i have same tv and same problem

      would like to know what you did

      thanks look forward to a reply

      Comment

      • Mr_Bodgit
        Member
        • Dec 2010
        • 47
        • doncaster

        #4
        Re: LG 50PQ6000 went pop

        Got a board coming this week so I'll let you know

        Comment

        • Baileybum1234
          Badcaps Veteran
          • Sep 2012
          • 245
          • UK

          #5
          Re: LG 50PQ6000 went pop

          Just seen your post I would of checked the voltages but my PSU blew again.
          Last edited by Baileybum1234; 02-05-2013, 01:52 PM.
          Repaired: LG50PQ6000

          Comment

          • vvuk
            New Member
            • Mar 2013
            • 2
            • Bosnia

            #6
            Re: LG 50PQ6000 went pop

            Mr_Bodgit, where did you order new board for your TV? I`m having the same problem so I`d like to order it to. Thanks.

            Comment

            • Baileybum1234
              Badcaps Veteran
              • Sep 2012
              • 245
              • UK

              #7
              Re: LG 50PQ6000 went pop

              Did it fix the problem?
              Repaired: LG50PQ6000

              Comment

              • giggz
                New Member
                • Feb 2013
                • 4
                • United Kingdom

                #8
                Re: LG 50PQ6000 went pop

                For anyone whos interested i fixed this problem by just replacing the ysus board

                would like to thank (mr bodgit) for his help

                Comment

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