NSkyLab
Member
Last Activity: 10-09-2025, 06:13 PM
Joined: 12-22-2022
Location: Saint Augustine, FL
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If I properly got what you've described then I'd expect to see some artifacts or crooked colors... I didn't post those photos, but the picture looked fine, there were proper colors, except the saturation on the left side. According to the owner it was gradually getting worse over the last few months...... -
I can't find the vgoff testpoint, but I measured every testpoint I could find and they are identical on both sides... Pretty sure it's in the COF. So it's going to the dumpster today.
Thanks for help....Leave a comment:
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Android has nothing to do with that since the issue is on the physical level, not software level. The panel physical interface is not plain RGB, it does have a signal to explicitly switch pixels off. Davi.p may be on the right track......Leave a comment:
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Main board is disconnected. This lower level issue....Leave a comment:
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Yes, 7.25V goes straight to the last cof tab. I compared both sides (left and right strip boards are almost identical) and voltages are equal......Leave a comment:
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Thanks. Already did all of these, no change......Leave a comment:
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Thanks, but orientation does not matter here....Leave a comment:
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Yes, top is the issue, all pictures are supposed to be plain R, G and B. Vcom is 7.25V on both sides of the panel, AVDD is 16.8V....Leave a comment:
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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?...
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