Hi, I have a strange issue with a LG monitor.
At first, it have persistent images and get "pinkish".
I cleaned the lvds cable and situation get better.
Anyway, I still have persisten image on the left. Besides,
if you watch carefully with a magnifying glass you will see
that the problem is only on "odd" rows ... in other words
one row is fine but the next one have and issue (less brighter
on all the three colors)... and again, good, bad, good, bad ...
right side (it's perfect):
left side:
I am not a tft expert, but my guess is that the line opening the gates have
a voltage a bit below standard and so, in the left part on the screen, it doesn't
open completely the transistor (the line has its own impedance so the voltage is not exactly the same along the row). This happen only on "odd" rows .. probably because the voltage on odd and even rows are independent of one another.
Am I right?
If so, I think I should check VGL, VGH and Vcom ... right?