LG 50PC3D shuts off... bad caps?

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  • tom66
    EVs Rule
    • Apr 2011
    • 32560
    • UK

    #61
    Re: LG 50PC3D shuts off... bad caps?

    Originally posted by akk944
    Hdmi clicks right off as well... coax stays on for a bit then does the same...
    Have you found the White Wash option yet?

    Look under MENU -> OPTION -> ISM METHOD -> WHITE WASH
    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

    • akk944
      Senior Member
      • Aug 2012
      • 60
      • USA

      #62
      Re: LG 50PC3D shuts off... bad caps?

      Oh its going to be in there. I thought i checked but didnt see it. Ill give it a try. What should i be looking for or doing once in that mode. Let me know. Thanks!

      Comment

      • tom66
        EVs Rule
        • Apr 2011
        • 32560
        • UK

        #63
        Re: LG 50PC3D shuts off... bad caps?

        Originally posted by akk944
        Oh its going to be in there. I thought i checked but didnt see it. Ill give it a try. What should i be looking for or doing once in that mode. Let me know. Thanks!
        If it shuts off real quick when you turn that on, then somehow the PSU is incapable of supplying all the power, or something is overheating. Possibly a cold solder joint somewhere.
        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

        • akk944
          Senior Member
          • Aug 2012
          • 60
          • USA

          #64
          Re: LG 50PC3D shuts off... bad caps?

          Alright it shut off real quick.. so it's something with the PSU for sure?

          Comment

          • tom66
            EVs Rule
            • Apr 2011
            • 32560
            • UK

            #65
            Re: LG 50PC3D shuts off... bad caps?

            Originally posted by akk944
            Alright it shut off real quick.. so it's something with the PSU for sure?
            It certainly sounds like it. With your meter, can you check the high voltage Vs (should be around 190V when running.) If it starts falling THEN the TV clicks off (you should hear a relay click or two) it sounds like a cold joint or controller shut down to me.
            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

            • akk944
              Senior Member
              • Aug 2012
              • 60
              • USA

              #66
              Re: LG 50PC3D shuts off... bad caps?

              Sure, where exactly should I be sticking the meter? Thanks.

              Comment

              • tom66
                EVs Rule
                • Apr 2011
                • 32560
                • UK

                #67
                Re: LG 50PC3D shuts off... bad caps?

                Originally posted by akk944
                Sure, where exactly should I be sticking the meter? Thanks.
                On the thick multi-way power connector which goes to either sustain board - the boards on the left and right of the TV. There should be a pin marked Vs. Post a pic if unsure.
                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

                • akk944
                  Senior Member
                  • Aug 2012
                  • 60
                  • USA

                  #68
                  Re: LG 50PC3D shuts off... bad caps?

                  Oh okay I'll take a look and post back on Thursday. I am away till then. Lets hope that's the problem? or the fix is hard for it? Let me know. Thanks!

                  Comment

                  • tom66
                    EVs Rule
                    • Apr 2011
                    • 32560
                    • UK

                    #69
                    Re: LG 50PC3D shuts off... bad caps?

                    Originally posted by akk944
                    Oh okay I'll take a look and post back on Thursday. I am away till then. Lets hope that's the problem? or the fix is hard for it? Let me know. Thanks!
                    It's a very difficult problem - not one I'm well experienced with. I hope you can fix it.
                    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

                    • akk944
                      Senior Member
                      • Aug 2012
                      • 60
                      • USA

                      #70
                      Re: LG 50PC3D shuts off... bad caps?

                      Uh oh.. that doesn't sound too promising haha. But, would replacing the whole PSU board do the trick though? Thanks

                      Comment

                      • tom66
                        EVs Rule
                        • Apr 2011
                        • 32560
                        • UK

                        #71
                        Re: LG 50PC3D shuts off... bad caps?

                        Originally posted by akk944
                        Uh oh.. that doesn't sound too promising haha. But, would replacing the whole PSU board do the trick though? Thanks
                        Possibly. I couldn't guarantee it. I do have a spare main board for the 42PC1D; that's probably the only other cause, and likely to be compatible.
                        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

                        • akk944
                          Senior Member
                          • Aug 2012
                          • 60
                          • USA

                          #72
                          Re: LG 50PC3D shuts off... bad caps?

                          Alright sounds good.. I'll test out what you told me to on Thursday and hope I can get this thing working by the weekend. Will keep you posted. Thanks!

                          Comment

                          • akk944
                            Senior Member
                            • Aug 2012
                            • 60
                            • USA

                            #73
                            Re: LG 50PC3D shuts off... bad caps?

                            Hey guys, I swapped out the power board with another one and that fixed the problem. I prefer not to use it since it was pretty expensive, but i will try and run the tests you mentioned. What's the fix for it though? Would it be worth or possible to fix the old board or should i not even bother.

                            Comment

                            • tom66
                              EVs Rule
                              • Apr 2011
                              • 32560
                              • UK

                              #74
                              Re: LG 50PC3D shuts off... bad caps?

                              Originally posted by akk944
                              Hey guys, I swapped out the power board with another one and that fixed the problem. I prefer not to use it since it was pretty expensive, but i will try and run the tests you mentioned. What's the fix for it though? Would it be worth or possible to fix the old board or should i not even bother.
                              Possibly a cold solder joint or intermittent component - could be tricky. Glad you found the fix...
                              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

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