Using bulb to test X main after IGBT/Gate driver IC replacement

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  • tech2014
    Badcaps Veteran
    • Aug 2014
    • 807
    • Canada
    #1

    Using bulb to test X main after IGBT/Gate driver IC replacement

    I have a Samsung plasma TV that keeps clicking at power up. I found VS measured shorted on the X Main. I found it had 4 shorted IGBTs. I replaced all of them and also plan on replacing all of the gate driver ICs, FAN73611 and FAN73711. After replacing the gate driver IC, I want to somehow test the board with a bulb to make sure I didn't miss anything.

    How would I go about doing this?
    Tags: None
    • Alastair E
      Chief Womble
      • Mar 2013
      • 1963
      • U.K.
      #2
      Re: Using bulb to test X main after IGBT/Gate driver IC replacement

      Disconnect the Vs supply Only from the Y-SUS/X-SUS, then wire a 100-150W 240V bulb in series from Vs plug on the PSU to Vs point on Y-SUS/X-SUS--Whichever you're testing/protecting....
      Last edited by Alastair E; 02-19-2016, 02:15 AM.
      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

        • tech2014
          Badcaps Veteran
          • Aug 2014
          • 807
          • Canada
          #3
          Re: Using bulb to test X main after IGBT/Gate driver IC replacement

          ok, how do you wire the bulb?

            Comment

            • Alastair E
              Chief Womble
              • Mar 2013
              • 1963
              • U.K.
              #4
              Re: Using bulb to test X main after IGBT/Gate driver IC replacement

              Youve replaced IGBT's, Driver-chips etc etc.....

              And you're asking HOW TO WIRE A BULB!!

              Sheesh!!
              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

                • tech2014
                  Badcaps Veteran
                  • Aug 2014
                  • 807
                  • Canada
                  #5
                  Re: Using bulb to test X main after IGBT/Gate driver IC replacement

                  never done it or know anyone who has. bulbs don't come with wires.

                    Comment

                    • Alastair E
                      Chief Womble
                      • Mar 2013
                      • 1963
                      • U.K.
                      #6
                      Re: Using bulb to test X main after IGBT/Gate driver IC replacement

                      Oh good grief....

                      Batteries dont come with leads--But you manage with those!

                      Thats what Soldering-Irons are for!
                      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

                        • vinceroger69
                          Badcaps Legend
                          • Mar 2012
                          • 6714
                          • uk
                          #7
                          Re: Using bulb to test X main after IGBT/Gate driver IC replacement

                          i just use a bulb holder for the bulb and then connect that way.

                            Comment

                            • tech2014
                              Badcaps Veteran
                              • Aug 2014
                              • 807
                              • Canada
                              #8
                              Re: Using bulb to test X main after IGBT/Gate driver IC replacement

                              thanks for the reply vinceroger69, that makes sense, and without the attitude
                              Last edited by tech2014; 02-19-2016, 02:01 PM.

                                Comment

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