Lg 42pc3ra

[semiRocket]

So I've decided to open a new thread, this is in continuation from following post from another thread.

Hello,

Just to be sure, is attached picture the case of what it's being talked about in this thread?

I have a LG 42PC3RA, after replacing IPM and a fuse on Z-sustain board, picture is great again, except this red pixel noise on black screen which becomes more noticeable when the set warms up. The noise is mostly noticeable in the up left corner and in the middle of the screen.

So Va, Vs and Vsc are spot on. For other voltages I could not find test point or I am not sure how they are called (it does not say on the label).

I've tried to adjust slightly Vs and Va by lowering it by -10v, that did not help, with the sparkling issue. Then I've tried adjusting setup and setdn, adjusting setdn seems to not have any effect, but adjusting setup have noticeable effect. I found out that the best setting is turned all the way clockwise. My questions now are:

1. What would be longterm effect of this and what does this mean.
2. Does main board needs a new firmware?

Before:


After: