On Dec 26 2009, 5:57*pm, pedro wrote:
I normally repair LCD monitors which are heading for landfill, and
they are turned over to needy/worthy groups (usually replacing olde
CRTs). *Almost always, repairs are either "recap SMPS" or "replace
inverter transistors", and the hardest part is getting the case apart.

Recently one Samsung 943NWX - presented as "dead" - had an odd
outcome. *Replaced the bulging electros in the PSU and the unit came
to life, but with a dominant pink tinge to the entire screen area.
Normally I would ascribe this to backlight end-of-life, but three
things contradict this diagnosis. *Firstly, hitting the menu button
with no video drive gives a small display "Test OK" (or similar) text
on a background which is white, so backlight colouration is unlikely.
Ditto if the menu system is fired up when a video signal is present -
pink screen but the menu b/g is pure white. *Clearly the VGA input is
being incorrectly processed. *Finally, the donor has confirmed that it
was white before failure.

Has anyone experienced the video processor taking a hit when the SMPS
goes west with faulty caps? *Clearly the unit doesn't warrant pursuing
a video chip replacement, and thereare no signs of distress on the
video board.

It's set to component and getting RGB or vice versa.

G²