42LG2000 intermittent switch on

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  • shepp
    Badcaps Veteran
    • Mar 2012
    • 377
    • England
    #1

    42LG2000 intermittent switch on

    few pics but Im suspecting the 3 Bulging caps on the inverter board so far...

    Tv still switches on, and voltages look good on PSU

    What do you lot on here think? is this a common problem

    Is it likely to be any thing else?

    I hate intermittent problems!!!!! :-0
    Attached Files
    Tags: None
    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK
      #2
      Re: 42LG2000 intermittent switch on

      If no backlight then yes those caps could easily cause your fault.
      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

        • shepp
          Badcaps Veteran
          • Mar 2012
          • 377
          • England
          #3
          Re: 42LG2000 intermittent switch on

          ill try and get it to fault before i take them off and see what happens

          would you say its better to replace the caps or the whole board??

            Comment

            • tom66
              EVs Rule
              • Apr 2011
              • 32560
              • UK
              #4
              Re: 42LG2000 intermittent switch on

              I would replace the capacitors. You can buy genuine Panasonic FM/FR/FC from CPC with free delivery. Replace all Samwha caps (if there are non bulgers on a second inverter replace them too, they won't be too far behind.)
              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

                • shepp
                  Badcaps Veteran
                  • Mar 2012
                  • 377
                  • England
                  #5
                  Re: 42LG2000 intermittent switch on

                  theres only them on the inverter (only 1 board)

                  the ones on the PSU are all SAM YOUNG (are these ok?)

                  ive never changed a sam young yet so my guess is there pretty good caps?

                  p.s ordered Panasonics today

                    Comment

                    • tom66
                      EVs Rule
                      • Apr 2011
                      • 32560
                      • UK
                      #6
                      Re: 42LG2000 intermittent switch on

                      Samyoung are "OK". I've not seen one fail yet. They used to be Chemicon subsidiary but broke off about 10 years back so I think they kept some tech from Chemicon.
                      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

                        • Th3_uN1Qu3
                          Believe in
                          • Jul 2010
                          • 6031
                          • Romania
                          #7
                          Re: 42LG2000 intermittent switch on

                          I've seen many failed ones but it's always been in really old sets so i'll give them the benefit of the doubt. Certainly better than Samwha or Teapo.
                          Originally posted by PeteS in CA
                          Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
                          A working TV? How boring!

                            Comment

                            • shepp
                              Badcaps Veteran
                              • Mar 2012
                              • 377
                              • England
                              #8
                              Re: 42LG2000 intermittent switch on

                              changed the caps and retested today, everything seems to be ok so far

                              will retest for a couple of days see if it faults....can any one recommend a test procedure? like leaving it on for so long then on off tests etc or whats best test?

                                Comment

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