Question about Flat Panel Televisions
LG plasma RU -50PZ61 TV.
Bought this tv as is, and it had a Z-pcboard problem.
Rebuilt the Z-Board, changed all electrolytic caps on the board.
Checked the power board and looked at the others briefly.
Tv now works, but I have noticed when the image on the screen changes, and mainly when going into a picture with a lot of black,there is a lot of greenish snow on screen for a second or two. This happens in al video signals.
The greenish snow seems to appear in the dark areas of the picture.
thanks Bill I.
Have a look at link below.
(The data of adjustment voltage may be on label, which is attached on the metal part under Y-Sustain
Posted on Feb 04, 2009
This may be a burn in effect. plasmas are notorious for this.
Posted on Feb 03, 2009
It can be due to loose inter nal soldering joints and mostly gets solved br cold soldering whole board .
Posted on Jan 31, 2009
That is called diffusion. that can be adjusted out in most cases by adjusting the y sustain pcb but can also be the main pcb, the logic pcb and panel itself but not likely
Posted on Jan 28, 2009
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