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Wistron lcd for Panasonic tx42 a400b. Can I use it for another model

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    Wistron lcd for Panasonic tx42 a400b. Can I use it for another model

    I have stripped the Wistron lcd panel for the Panasonic tx42 a400b . I am trying to repair the backlight as it has the single flash red led blink code. I have removed the lcd glass and the white diffuser layers and tested every led on the backlight and found 2 blown led's. AM just in the process of attempting a repair (stacking method).
    However , I also have a panasonic tx42 as520b with a shattered lcd. It functions normally apart from the broken screen with all good parts and cables. It has occurred to me that perhaps the lcd glass from the a400 may work on the as520 as they are both 42 inch Wistron panels. The power board , led driver board and tcon have identical part numbers and the ribbons for the tcon are identical . Does anyone know if it would work if i install the lcd glass from the 400 into the as52o. Or, would this error code the main board or even worse damage the lcd? In terms of dimensions the lcd would appear to fit the 520.

    #2
    Re: Wistron lcd for Panasonic tx42 a400b. Can I use it for another model

    You need to look at the model number sticker of both LCD panels to see if they are the same model or not, if not then you need to get the spec sheet of both models of the panels to verify the electrical spec.
    Never stop learning
    Basic LCD TV and Monitor troubleshooting guides.
    http://www.badcaps.net/forum/showthr...956#post305956

    Voltage Regulator (LDO) testing:
    http://www.badcaps.net/forum/showthr...999#post300999

    Inverter testing using old CFL:
    http://www.badcaps.net/forum/showthr...er+testing+cfl

    Tear down pictures : Hit the ">" Show Albums and stories" on the left side
    http://s807.photobucket.com/user/budm/library/

    TV Factory reset codes listing:
    http://www.badcaps.net/forum/showthread.php?t=24809

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      #3
      Re: Wistron lcd for Panasonic tx42 a400b. Can I use it for another model

      Thanks for your response.
      The lcd panels have 2 serial numbers on the back.
      The as520 has: TZLP104DZVR and V420FWSD09
      tHE A400B has TZLP104CBVB and V420FWSD09

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        #4
        Re: Wistron lcd for Panasonic tx42 a400b. Can I use it for another model

        I checked the part number on the lcd glass before proceeding and they matched exactly. I attempted the replacement of the lcd and it worked. The as520 now works fine with a replacement lcd glass.

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          #5
          Re: Wistron lcd for Panasonic tx42 a400b. Can I use it for another model

          Thanks for the update and glad the swop worked out ok.

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