LG 50PA6500 Plasma TV damaged after a power spike

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  • tofik
    Member
    • Dec 2022
    • 26
    • UK
    #21
    Re: LG 50PA6500 Plasma TV damaged after a power spike

    Just checked both buffer boards, probably no shorts! (tested every connector twice) so it's likely that PDP panel should be fine!

    Tomorrow will try to test YSUS boards without these three IGBT's, if it fail then I'll order the new ones and we will see what happen when replaced.

      Comment

      • nomoresonys
        Badcaps Legend
        • Jan 2013
        • 12081
        • U.S.
        #22
        Re: LG 50PA6500 Plasma TV damaged after a power spike

        https://www.google.com/search?client...rds+for+shorts

          Comment

          • tofik
            Member
            • Dec 2022
            • 26
            • UK
            #23
            Re: LG 50PA6500 Plasma TV damaged after a power spike

            I mean I tested them and they seems to be fine (both buffers).

            Today I did a test with Y-SUS board connected without these IGBT's which were shorted.

            Before that, when YSUS was connected, logic board status led was compeletely off. Now it works and at least I can do the PDP test, please have a look below (it works like that without 3 IGBT's and 3 high voltage capacitors as I took them off to have some more space for IGBT's desoldering).







            I think PDP should be fine and I need to focus on the Y-SUS board now.

            I am sure that Q401/Q402 (RJP63K2) + Q509 (K8A60DA) + diode D562 + probably diode D256 are all damaged and will replace them.

            Now the question, what else to order and replace on YSUS board? I see these components are quite cheap so I'll also order switching optocouplers(TLP105) just in case. What else?

            Thanks!

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