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75pfl5604/f7 Main board replacement RGB issue

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    #1

    75pfl5604/f7 Main board replacement RGB issue

    Hey y'all, got a 75pfl5604/f7 that was DOA and I diagnosed this to be a main board issue. There was no indicator light, etc etc.

    Ordered a new one (maybe used) from torres TV parts and installed it. Now the screen cycles the RGB colors only. Hit power and that's only thing that happens. Which is good/bad because it shows the panel/PSU/tcon are running well lol.

    Anyone know what the deal is and how to get it out of this loop??
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    #2
    you may have defect LVDS pin contact.. inspect it under good loop

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      #3
      Originally posted by Diah View Post
      you may have defect LVDS pin contact.. inspect it under good loop
      What does under good loop mean. But yes I will check and reseat all ribbons.

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        #4
        Originally posted by Diah View Post
        you may have defect LVDS pin contact.. inspect it under good loop
        Interestingly enough this was the solution. For some reason I had to jam the thing in there, I took some needlenose and grabbed the ribbon as tight as I could and use a screwdriver to push in the ribbon and voila it was done.

        Also I'm just kidding lol, but it was not seated fully and did require a little maneuvering, thanks again diah

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          #5
          Originally posted by EazyBone View Post

          Interestingly enough this was the solution. For some reason I had to jam the thing in there, I took some needlenose and grabbed the ribbon as tight as I could and use a screwdriver to push in the ribbon and voila it was done.

          Also I'm just kidding lol, but it was not seated fully and did require a little maneuvering, thanks again diah
          well let explain this issue to whom read this threat,,
          in General the Issue of only RGB Pattern displaying on the screen... are 99% the LVDS between MB & T-CON or LVDS between MB & Panel in case tV had no external T-CON... the reason one or more of the Silver contact pins during Sitting get cut or lost connection... those PINs are for V, Signals P+ P- could be... so in this case the T-CON or Panel ( no t-con set ) will have only 12V .. so it will run in test of T-CON / Panel stand alone mode.
          second reason 1% and this less ,issue at the SPI on MB
          thanks for following.

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