LG 42pj350r turns on no picture

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  • rasyid7
    New Member
    • Sep 2017
    • 5
    • Indonesia
    #1

    LG 42pj350r turns on no picture

    First, the TV just stuck in standby. I can't turn it on with the remote. then I read all the thread about it and concluded that the mainboard fails.

    I replaced the mainboard, then it can turn on with the remote but just black screen. I can't open the menu and I can't turn the TV off with the remote so I had to plug off.

    When I short the EXT_AUTO_GEN I can see the test pattern.
    The mainboard that I bought was little different, but the seller told me that it was the same.

    NB: The top mainboard is the new one, the bottom mainboard is the fail one that comes with the TV.

    Thanks
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    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK
      #2
      Re: LG 42pj350r turns on no picture

      Sounds like your new main board is defective if you get test patterns and both boards have the same fault.

      Very small chance the LVDS cable is damaged, so inspect it carefully.
      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

        • rasyid7
          New Member
          • Sep 2017
          • 5
          • Indonesia
          #3
          Re: LG 42pj350r turns on no picture

          Originally posted by tom66
          Sounds like your new main board is defective if you get test patterns and both boards have the same fault.

          Very small chance the LVDS cable is damaged, so inspect it carefully.
          thanks for the reply. I'll contact the seller.

            Comment

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