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Panasonic FM good for replacing bad TV caps?

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    #21
    Re: Panasonic FM good for replacing bad TV caps?

    Frozen Vizio logo hints to bad T-con. Try unplugging and plugging the T-con back in, see if you get a new frame.
    Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
    For service manual, schematic, boardview (board view), datasheet, cad - use our search.

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      #22
      Re: Panasonic FM good for replacing bad TV caps?

      Originally posted by tom66 View Post
      Frozen Vizio logo hints to bad T-con. Try unplugging and plugging the T-con back in, see if you get a new frame.
      And there are voltage regulators on the t-con boards as well.
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        #23
        Re: Panasonic FM good for replacing bad TV caps?

        Originally posted by retiredcaps View Post
        And there are voltage regulators on the t-con boards as well.
        Yes, I've had one fail before. It made the screen go black with only a few faint multicoloured lines, although it did work fine once on its own accord after a car journey - so I suspect a loose die bonding or temperature sensitivity.
        Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
        For service manual, schematic, boardview (board view), datasheet, cad - use our search.

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          #24
          Re: Panasonic FM good for replacing bad TV caps?

          Thanks for all the replies guys! These Vizio's seem to be like trash. None of them are even a year and a half old. I think these might have already been tampered with though because one of these has a Delta power board, all nichicon and Rubycon

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            #25
            Re: Panasonic FM good for replacing bad TV caps?

            Eh, they seem to be okay in the power supply area (usually have good caps on Delta boards in Vizios from what I have seen), but they cheap out on the main board components and the firmware seems to be poorly written.
            Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
            For service manual, schematic, boardview (board view), datasheet, cad - use our search.

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              #26
              Re: Panasonic FM good for replacing bad TV caps?

              Almost all of them are LG boards packed full of Sam Young's that are usually bulging. But yeah, the Main boards seem to be the main issue. The T-con board connected to the screen looks really simple, what could possibly go wrong on those?

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                #27
                Re: Panasonic FM good for replacing bad TV caps?

                Originally posted by Pentium4 View Post
                Almost all of them are LG boards packed full of Sam Young's that are usually bulging. But yeah, the Main boards seem to be the main issue. The T-con board connected to the screen looks really simple, what could possibly go wrong on those?
                What could possibly go wrong? You have much to learn...

                Shorted MLCC is a favourite - can sometimes cause other weird faults on other parts of the TV
                Randomly blown fuse (happened to me)
                Dead ASIC has bitten someone here (frozen picture, first frame only)
                Dead RAM, causing weird flickering green lines (happened to me)
                Dead LDO, causing single pixel lines on black screen (happened to me)
                Shorted MOSFET blowing fuse, leading to low 15V, leading to damage to other parts of T-con (happened to me)
                Loss of backlight sync - result: no backlight
                Loose driver flex, causing lines on 1/4 or 1/2 of display
                Low 5V causing T-con to lock up screen with random lines (happened to me)
                ...
                Last edited by tom66; 07-25-2012, 04:32 PM.
                Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                Comment

                  #28
                  Re: Panasonic FM good for replacing bad TV caps?

                  Maybe I'm not looking at the right thing, would it have two ribbons going from the main board to it? there's hardly anything on it
                  And good, I want to learn as much as my brain will allow me
                  Both of the fuses on the main board tested good
                  Last edited by Pentium4; 07-25-2012, 04:10 PM.

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