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  • advant
    Driving a Sharp TCON/panel with a universal main board
    by advant
    This thread is about trying to get an Universal Main Board to work with a Sharp TCON and panel.

    I have a Sharp LC-46D85UN TV that has had a main board issue. Since this model is from 2009, I am not able to find an exact replacement of the main board. Instead, I decided to see if I can future proof this tv by getting a Universal Main Board (T53U21.2) from China to work with the Sharp TCON (CPWBX4291TPZA) and panel. The universal main board supports a 8 bit dual channel LVDS interface whereas the TCON requires a 10 bit dual channel LVDS input. I have modded the LVDS connector to match...
    02-03-2020, 12:25 AM
  • cheeky2
    Is it possible to upgrade from a Vestel 17MB97 main board to a 17MB110 Main board?
    by cheeky2
    I suppose the real question is whether the existing pinouts from ether a 17IPS71 psu are cross compatible with a 17IPS12 psu? If they are then the exchange of the main boards should have no issues providing the screen is compatible with both main boards. Obviously you can change the screen configurations easily enough (providing you have the correct files) for the main board. Why may you ask would I do this? Well a lot of the smart features are no longer working on a Hitachi 48HBT62U main board I wish to give it a new lease of life!
    Obviously the same LVDS connector for the screen connection...
    05-25-2024, 03:27 AM
  • Dani_2024
    Sceptre U550CV-UMR 4K LED, Bad Caps on Main Power Board?
    by Dani_2024
    Hi and thanks in advance for any input you might provide!
    I have a Sceptre U550CV-UMRD8POTV83BB 4K LED (this is a dumb tv) that I bought new in August 2021, so It's just completed 3 years.
    Main power board model: TP.MS3683.PC821 T-Con board: N4TP546UHDPU2L_BO

    Last Sunday I was watching a dvd and fell asleep for about half hour, when I awoke the tv screen was black and couldn't get the dvd menu to show, so I changed the input to antenna and had sound but no picture, turned it off. I then got online and found this great site! ....read many troubleshooting tips and this...
    10-28-2024, 05:06 PM
  • m4a2t0t
    Sharp LC-60LE550U Mainboard F905FM06 DUNTKF905WE06TV Main board keeps dying
    by m4a2t0t
    What would cause a main board to die when you disconnect AC power to the TV?

    This is the second board that it has happened with. All I am doing is disconnecting the power cord from the wall and plugging it back in.

    I replaced the main board because I was not getting a signal on PS_ON when pressing the power button. The PSU was/is still sending its 5v standby signal

    Thanks
    03-27-2023, 04:05 PM
  • ygorsan
    LG 55NANO77SRA TV – Menu scrolling by itself even after removing button board (Main Board EBU66792103)
    by ygorsan
    Hi everyone,




    I’m looking for help with a persistent issue on an LG TV model 55NANO77SRA, which uses the main board EBU66792103 (also used in LG UQ80 and NANO75/NANO80 series).







    🧩 Problem Summary:
    • The TV keeps scrolling through the menu or selecting items by itself.
    • I removed the physical button board (the entire panel with power and volume buttons) and also disconnected the flat cable (CN202) from the main board.
    • The remote control is not in use (batteries removed), and the TV still shows the same behavior.
    • I
    ...
    07-28-2025, 08:34 AM
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