SHARP LC-70UD27U black and white lines

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  • zoontz
    Member
    • Jul 2024
    • 14
    • United States

    #1

    SHARP LC-70UD27U black and white lines

    Wondering if anyone has addressed an issue with the SHARP 70” LC-70UD27U having thin black and white lines running from left to right horizontally on the screen. I snagged this TV set from a neighbor since I have been successful in repairing numerous other TVs. I assume this probably happens to other TV sets and may have been addressed in another thread. If so please point me in the right direction.

    What I have tried so far.
    I have tested all HDMI inputs with the same results.
    I have checked for firmware updates.
    I have reset to factory settings.
    I have removed the back panel and reseated all the wiring.

    Have a look at the images included in this post. My ultimate goal is to determine if this is repairable or if I should move on. Any assistance in identifying the issue and how to repair the TV would be much appreciated.
  • Diah
    Badcaps Legend
    • Feb 2013
    • 6355
    • Germany

    #2
    usually these lines appears at below scenarios,
    1- picture was before jumping / double image , doing masking one clock, picture became stable but the line appears ...( check if one of the ribbon cable have a mask )
    2- Panel damage at glass on the side ( take out the bezel and inspect the screen glass at the lines area )
    3- T-con fault
    4 panel COF fault if there any on the side panel installed.

    Comment

    • nomoresonys
      Badcaps Legend
      • Jan 2013
      • 12088
      • U.S.

      #3
      Originally posted by Diah
      usually these lines appears at below scenarios,
      1- picture was before jumping / double image , doing masking one clock, picture became stable but the line appears ...( check if one of the ribbon cable have a mask )
      2- Panel damage at glass on the side ( take out the bezel and inspect the screen glass at the lines area )
      3- T-con fault
      4 panel COF fault if there any on the side panel installed.
      +1, does it seem like a backlight led could be bad also? on top of a bad side cof or 1-3.

      Comment

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