Sony XBR-65X900F black and white image on one side (fading saturation)

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  • NSkyLab
    Member
    • Dec 2022
    • 11
    • United States
    #1

    Sony XBR-65X900F black and white image on one side (fading saturation)

    I though I've seen all possible kinds of failures but this one is new...
    Colors saturation is gradual.y fading out on the left side of the screen (all colors are fading out). While B&W image is looking good.
    I tried replacing TCon but nothing changed. So this is looking like the panel failure. Is there a chance it can be fixed?
    Any useful measured can be done on the panel's narrow pcbs? Is there may be something similar to taping trick to fix this issue?
    Attached Files
    Tags: None
    • Davi.p
      Hobbist Tech
      • Sep 2009
      • 4460
      • Italy - Milan
      #2
      Hi, yes it's an uncommon situation, i think the wrong side is the one at top in picture, yes? It's most possible a problem with the Vcom signal in that side, i think it's too low, check the left side distribution strip board for some testpoints named Vcom-something, it has to be around 7v (or anyway half-avdd), if it's low check the respective pin on the tcon board, if there is ok then a connection problem, or some discrete on the strip board.. bye

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