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32LG30-UA with back light, no picture, no sound

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    #1

    32LG30-UA with back light, no picture, no sound

    Fixing up this TV for a friend.

    When I got it the TV would turn on for anywhere from 2-4 sec and go right back off. Never could get it to display picture or produce sound. It had no standby voltage so I replaced the power board. This got the TV to come on and stay on but it has no picture or sound. It clearly has back light and no bad lamps. Doesn't respond to remote or power button to turn it off. I can turn off by holding power on TV for roughly 10s or just unplug. Main board gets a steady 12v and interter is getting 24v.

    I'm look to either find a firmware file or get advice to fix whatever anyone might think is wrong still. LG will not release their file to me because there has been no true update, just factory exe.
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    #2
    Re: 32LG30-UA with back light, no picture, no sound

    Please move the post to TV section, you will get more help there.
    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: 32LG30-UA with back light, no picture, no sound

      It doesn't look like I can move this thread myself, or else I cannot find the means of doing so. If someone with ability can do it for me that'd be great!

      Comment

        #4
        Re: 32LG30-UA with back light, no picture, no sound

        As I looked into replacing the Main of this TV I noticed a few discrepancies.
        The board in the TV is marked with printing EAX42405502(10) and has a sticker on it with AGF37006901. The TV panel is V315B1-L07 REV C1

        Looking into the parts here are the discrepancies I've found:
        - Assuming the board is actually EAS42405502(10), then this should be for a 47LG50 model and not mine. http://www.shopjimmy.com/lg-ebu42600302-main-board.htm

        - If the sticker was correct, AGF37006901, it should be correct and would match the requirements of the panel. However, part numbers here do not line up when my service code is 32LG30-UA.AUSHLJM http://www.shopjimmy.com/lg-agf37006...for-32lg30.htm

        Should I replace with a true EAX42405502(5) and maybe the set will have video and respond to buttons and remote?

        Comment

          #5
          Re: 32LG30-UA with back light, no picture, no sound

          Just to help anybody else out. I found the mainboard with EAX42405502(10) and a sticker for AGF37006901 as this TV originally had in it. Bought it off ebay and it worked like a charm. TV set is fixed up now, but still wish LG would release firmware to the public to be downloaded and installed from USB to keep all these boards from going to the trashpiles.

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