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TC-P55GT30 7 blinks fixed

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    TC-P55GT30 7 blinks fixed

    Drove 75 miles today to buy this tv for $100 only because I have the same tv as my main tv and I love it, also because I have a spare board for every board from the 55vt30 if ou guys remember has a bad panel.

    The original owner had taken it apart and determined it was the SC board, he said.
    I put in my good SC board without checking the old one. 7 blinks with the new.
    So then I used the method tw2005 told me to use to check the buffers and sure enough the top buffer is shorted.
    Put in the new buffer, took 15 minutes to realign the ribbons and she is alive.

    Now the question is, can the buffer be repaired? Could it be the original SC board was good after all? I was afraid to put it back in because I didn want to short out either buffer.
    When I check for resistance at sc2, it reads in the K's of ohms.
    The known good sc board reads in the Mega ohms.

    I suppose I can send the sc board to have it checked and if needed, have it fixed as a spare.

    #2
    Re: TC-P55GT30 7 blinks fixed

    I found out the su board can be fixed too but it's expensive. Will it get more expensive as time goes on, due to components becoming scarcer?

    Comment


      #3
      Re: TC-P55GT30 7 blinks fixed

      You should be able to tell if the sc is bad simply checking for shorted 30f131 rjp30h2 rjp64g4. If the board is good maybe sell it and invest in another su as it's easier to repair the sc. How many chips are shorted on the su and what are they ? Very good chance the tracks will get torn if you have never done it before. I would practice removal on other dead buffers not to be repaired.

      Comment


        #4
        Re: TC-P55GT30 7 blinks fixed

        Why not use the SC50 jumper? If you get 7 blinks without the SU/SD buffers then you know its bad. If it turns on you still got a spare.
        I only repair Panasonic plasma tv's! Currently owning a TX-P55VT50 and still searching for a ZT60!

        Comment


          #5
          Re: TC-P55GT30 7 blinks fixed

          Originally posted by tw2005 View Post
          You should be able to tell if the sc is bad simply checking for shorted 30f131 rjp30h2 rjp64g4. If the board is good maybe sell it and invest in another su as it's easier to repair the sc. How many chips are shorted on the su and what are they ? Very good chance the tracks will get torn if you have never done it before. I would practice removal on other dead buffers not to be repaired.
          I checked them last night after my initial post and 5 of them are shorted, so it needs repair.

          Comment


            #6
            Re: TC-P55GT30 7 blinks fixed

            Originally posted by Moreno83 View Post
            Why not use the SC50 jumper? If you get 7 blinks without the SU/SD buffers then you know its bad. If it turns on you still got a spare.
            It was all put back together and I didn't want to have to open it back up. There are like 100 screws on that thing.

            Comment


              #7
              Re: TC-P55GT30 7 blinks fixed

              Originally posted by tw2005 View Post
              You should be able to tell if the sc is bad simply checking for shorted 30f131 rjp30h2 rjp64g4. If the board is good maybe sell it and invest in another su as it's easier to repair the sc. How many chips are shorted on the su and what are they ? Very good chance the tracks will get torn if you have never done it before. I would practice removal on other dead buffers not to be repaired.
              How do you check those?

              Comment


                #8
                Re: TC-P55GT30 7 blinks fixed

                I have 1 shorted RJP63G4.
                3 shorted RFN20.
                3 shorted 30F131.
                1 shorted C08N25.
                1 shorted RJP63G4.

                I have good 30F131 and RFN20 at my disposal but not the C08N25 or RJP63G4.
                I also am not comfortable soldering them on.

                I've been watching this hot air station, because right now all I have is a dual setting heat gun from harbor freight. What do you guys think of it?
                http://www.ebay.com/itm/122048804047...%3AMEBIDX%3AIT

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