How do I fix this old (warranty-expired) Planar PT1704N LCD display?

[brxndxn]

The display works for hours and even days sometimes flawlessly. Then, the monitor starts flickering kind of like an old VCR that is tracking badly. I've tried all the adjustments - including the horizontal clock and it is independent of the problem.

What is the problem and how would I fix this?

I am fully ready to open the monitor and adjust anything if necessary. It seems to me like there might be some sort of connection loose.

It is NOT a cable issue. I tried 2 different cables, multiple resolutions.. It even flickers when nothing is plugged into it and I'm using the OSD.


EDIT: oh ya.. the video...

 

[Bozo Galora]

sounds like drifting in and out of sync
used to be a prob with planars and ATI cards

the older Planars had an image tab (In the OSD) that would give you a "tracking" adjustment for flicker, or unstable image
in your manual I see only "Phase" adjustment for "pixel jitter", and "clock" for "wide verticle bands"
http://www.planar.com/Products/docs/CBU/archive_manual/Manual-PT1704N.pdf

make sure your Vf in LCD and Vidcard control panel is the same
try vsync in windows display settings to ON for whatever card you have