Lg plasma tv will not power up. 60pc1d

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  • clublex
    Senior Member
    • Feb 2016
    • 57
    • United States

    #1

    Lg plasma tv will not power up. 60pc1d

    Hello I have a tv that will not power up. It simply clicks on twice and then two clicks off. I am in need of someone to help guide me on what test points to try with my DMM. I need step by step help with the DMM ie... what setting to select when i test a certain circuit. I have a basic DMM that does not have an audible s/c. Thanks in advance.
    I have spent hours reading through different forums and I am at whits end. What am I missing? HEELLLLPPPP?
    Items Replaced through verified/legit companies:
    1. Power Supply Board
    2. ZSUS Board
    3. YSUS Board
    4. YSUS Buffer Boards (2)
    So, $250 later, my thought is for some detailed component level checks ie... voltages with your help/guidance.
    Attached Files
    Last edited by clublex; 03-06-2016, 01:55 PM.
  • ReeceyBurger123
    Never Give Up !
    • May 2014
    • 7325
    • Britain

    #2
    Re: Lg plasma tv will not power up. 60pc1d

    Im crying for you Why not diagnose it before throwing parts at it ? Im guessing your motherboard is at fault have you checked the Pson and Vson signals ?
    Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

    https://www.facebook.com/Telford-Tel...7894576335359/

    Comment

    • clublex
      Senior Member
      • Feb 2016
      • 57
      • United States

      #3
      Re: Lg plasma tv will not power up. 60pc1d

      Originally posted by ReeceyBurger123
      Im crying for you Why not diagnose it before throwing parts at it ? Im guessing your motherboard is at fault have you checked the Pson and Vson signals ?
      No. Where are they located and How do i check? Thanks.

      Comment

      • ReeceyBurger123
        Never Give Up !
        • May 2014
        • 7325
        • Britain

        #4
        Re: Lg plasma tv will not power up. 60pc1d

        Its on the main plug from the motherboard to the Psu. Its labeled next to the pins.
        Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

        https://www.facebook.com/Telford-Tel...7894576335359/

        Comment

        • clublex
          Senior Member
          • Feb 2016
          • 57
          • United States

          #5
          Re: Lg plasma tv will not power up. 60pc1d

          Originally posted by ReeceyBurger123
          Its on the main plug from the motherboard to the Psu. Its labeled next to the pins.
          OK GREAT! How do I check? Thx

          Comment

          • Alastair E
            Chief Womble
            • Mar 2013
            • 1963
            • U.K.

            #6
            Re: Lg plasma tv will not power up. 60pc1d

            You'll need to check the voltages, STDby 5V, and Ps-On for starters.

            Just changing boards is a sure way for a broken bank-balance and no further forwards! How do you KNOW the boards you bought are OK??

            IF from ebay or most sellers--They dont even test them properly,--just claim they are from working sets--but often they are busted before you even buy 'em!

            An investment in a cheapo $5 harbour-freight DVM would have saved you a huge lot of time and expense!
            Last edited by Alastair E; 03-06-2016, 02:34 PM.
            TELEFIX

            How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
            http://www.irf.com/technical-info/appnotes/an-1088.pdf
            PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM!

            Comment

            • clublex
              Senior Member
              • Feb 2016
              • 57
              • United States

              #7
              Re: Lg plasma tv will not power up. 60pc1d

              Originally posted by Alastair E
              You'll need to check the voltages, STDby 5V, and Ps-On for starters.

              Just changing boards is a sure way for a broken bank-balance and no further forwards! How do you KNOW the boards you bought are OK??

              IF from ebay or most sellers--They dont even test them properly,--just claim they are from working sets--but often they are busted before you even buy 'em!

              An investment in a cheapo $5 harbour-freight DVM would have saved you a huge lot of time and expense!
              Harbour-Freight DMM $6.99 Thx for the tip

              I measured and here is what i Got
              STDby = 4.96V
              VS 0n =4.51V
              I could'nt locate the PS On. Where should I look for that? thx so much for your help.
              Attached Files

              Comment

              • clublex
                Senior Member
                • Feb 2016
                • 57
                • United States

                #8
                Re: Lg plasma tv will not power up. 60pc1d

                Originally posted by ReeceyBurger123
                Its on the main plug from the motherboard to the Psu. Its labeled next to the pins.
                I measured and here is what i Got
                STDby = 4.96V
                VS 0n =4.51V
                I could'nt locate the PS On. Where should I look for that? thx so much for your help.

                Comment

                • Alastair E
                  Chief Womble
                  • Mar 2013
                  • 1963
                  • U.K.

                  #9
                  Re: Lg plasma tv will not power up. 60pc1d

                  Have you checked the Vs line to chassis for shorts?
                  TELEFIX

                  How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
                  http://www.irf.com/technical-info/appnotes/an-1088.pdf
                  PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM!

                  Comment

                  • ljintexas
                    LJinTexas
                    • Jan 2015
                    • 669
                    • USA

                    #10
                    Re: Lg plasma tv will not power up. 60pc1d

                    I have a 60PC3D with a bad pdp..torn/cracked ribbon causing a line. I have all boards.

                    Comment

                    • clublex
                      Senior Member
                      • Feb 2016
                      • 57
                      • United States

                      #11
                      Re: Lg plasma tv will not power up. 60pc1d

                      Originally posted by Alastair E
                      Have you checked the Vs line to chassis for shorts?
                      I am a novice with the DVM so what setting do choose to check for short. My DVM does not have audible capability so Im not sure how to check thx.

                      Comment

                      • clublex
                        Senior Member
                        • Feb 2016
                        • 57
                        • United States

                        #12
                        Re: Lg plasma tv will not power up. 60pc1d

                        Originally posted by Alastair E
                        Have you checked the Vs line to chassis for shorts?
                        OK so i put the DVM ON DCV 200 selection and checked the VS Lines (3)
                        Remember the tv clicks on twice and off twice.
                        1.when the tv clicks on the DVM is all over the place.
                        2. when the tv clicks off the DVM shows 23-24

                        The VS label on the tv shows
                        VS= 193V
                        VA= 63V I checked this and its shows to be correct.

                        What do I check now that is seems the VS lines are not showing the right Voltages?

                        Comment

                        • mmartell
                          Badcaps Legend
                          • Oct 2013
                          • 3189
                          • Canada

                          #13
                          Re: Lg plasma tv will not power up. 60pc1d

                          Look at the two large connectors in pic3 of post1 for one of the pins labelled VS. Remove power from set. Put dmm in resistance or ohms mode. Put one lead to that pin and another to chassis ground and report the reading.

                          Comment

                          • mmartell
                            Badcaps Legend
                            • Oct 2013
                            • 3189
                            • Canada

                            #14
                            Re: Lg plasma tv will not power up. 60pc1d

                            You could also check those two ceramic fuses by the connectors to see if they're blown by putting a meter lead on each end and checking the resistance.

                            Comment

                            • clublex
                              Senior Member
                              • Feb 2016
                              • 57
                              • United States

                              #15
                              Re: Lg plasma tv will not power up. 60pc1d

                              Originally posted by mmartell
                              Look at the two large connectors in pic3 of post1 for one of the pins labelled VS. Remove power from set. Put dmm in resistance or ohms mode. Put one lead to that pin and another to chassis ground and report the reading.
                              UPDATE; With the power off,I selected diode mode and put the black lead on the chaSsis and the RED lead on VS (THERE ARE 3 VS OR RED CABLES)....
                              1. VS READING = 1
                              2. VS READING = 1
                              3. VS READING = 1
                              i attached a pic. Thx
                              Attached Files

                              Comment

                              • clublex
                                Senior Member
                                • Feb 2016
                                • 57
                                • United States

                                #16
                                Re: Lg plasma tv will not power up. 60pc1d

                                Originally posted by mmartell
                                You could also check those two ceramic fuses by the connectors to see if they're blown by putting a meter lead on each end and checking the resistance.
                                I checked the fuses in diode mode.
                                Both read = 0
                                Attached is a pic of the correct board that you suggested that I check.
                                I checked the VS lines and all readings = 1
                                Attached Files

                                Comment

                                • clublex
                                  Senior Member
                                  • Feb 2016
                                  • 57
                                  • United States

                                  #17
                                  Re: Lg plasma tv will not power up. 60pc1d

                                  Originally posted by ljintexas
                                  I have a 60PC3D with a bad pdp..torn/cracked ribbon causing a line. I have all boards.
                                  what are you thinking for the boards?

                                  Comment

                                  • ljintexas
                                    LJinTexas
                                    • Jan 2015
                                    • 669
                                    • USA

                                    #18
                                    Re: Lg plasma tv will not power up. 60pc1d

                                    Let's make sure they are the correct boards for your set.

                                    Comment

                                    • ReeceyBurger123
                                      Never Give Up !
                                      • May 2014
                                      • 7325
                                      • Britain

                                      #19
                                      Re: Lg plasma tv will not power up. 60pc1d

                                      Check the Sus output from the Ipms.
                                      Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

                                      https://www.facebook.com/Telford-Tel...7894576335359/

                                      Comment

                                      • clublex
                                        Senior Member
                                        • Feb 2016
                                        • 57
                                        • United States

                                        #20
                                        Re: Lg plasma tv will not power up. 60pc1d

                                        Originally posted by ReeceyBurger123
                                        Check the Sus output from the Ipms.
                                        Do i check this with the tv unplugged?

                                        Comment

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