LG Plasma TV has gone on the blink

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  • satodaria
    New Member
    • Jan 2011
    • 6
    #1

    LG Plasma TV has gone on the blink

    Hi Tech Gurus,

    My LG Plasma TV model PDP42V8 has gone on the blink. Was watching a program a minute there was a flash - bang and the display + audio was lost. The warranty had expired an year back. So trawled this forum and tried some DIY - opened up the TV - discharged all the caps and did what a good mechanical engineer does - gave a close once over using EYEBALL MK 1. Nothing - all the caps look good - except for some discoloration along the power supply board - have attached the following photos - please advise.
    Attached Files
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    • retiredcaps
      Badcaps Legend
      • Apr 2010
      • 9271
      #2
      Re: LG Plasma TV has gone on the blink

      Does the power LED go green? Did you check to fuse to see if it is open?
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      We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.

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        Comment

        • Sam I Am
          Senior Member
          • Jun 2010
          • 115
          #3
          Re: LG Plasma TV has gone on the blink

          First, put all boards back in and check all output voltages of PS.

          I will need closer pics of the PS output connectors.

          Sam

            Comment

            • satodaria
              New Member
              • Jan 2011
              • 6
              #4
              Re: LG Plasma TV has gone on the blink

              Originally posted by retiredcaps
              Does the power LED go green? Did you check to fuse to see if it is open?
              Thanks for the msg - the fuses are all checked and ok. The LED goes green and there is some clicking sound from the set once power is on.

                Comment

                • satodaria
                  New Member
                  • Jan 2011
                  • 6
                  #5
                  Re: LG Plasma TV has gone on the blink

                  Originally posted by Sam I Am
                  First, put all boards back in and check all output voltages of PS.

                  I will need closer pics of the PS output connectors.

                  Sam
                  Thanks Sam - will check and give the details.

                    Comment

                    • Sam I Am
                      Senior Member
                      • Jun 2010
                      • 115
                      #6
                      Re: LG Plasma TV has gone on the blink

                      The clicking sound is the relays... no biggee.
                      How many of the tiny green LED's stay lit up on the board?

                        Comment

                        • cadiman
                          Badcaps Veteran
                          • Mar 2010
                          • 397
                          #7
                          Re: LG Plasma TV has gone on the blink

                          If you have a problem with the y drive and/or buffers or the Z drive it could be sending the power supply into protect mode (no picture or sound).

                          You should be able to unplug y or z drives to check this power supply.
                          I am not sure if this is still the ipm style board. The power supply will then stay on
                          and if you have an input source playing you will then have sound and know what board to replace. If the power supply still shuts down then go after the power supply.

                          Don`t worry about green leds on control board.

                          I have not seen the driver boards for this tv yet and I could be wrong.
                          It would be nice to see the back of the panel and all of the boards.

                            Comment

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