Sharp LL- T17A4-B lcd Monitor
- From: jakdedert <jakdedert@xxxxxxxxxxxxx>
- Date: Thu, 12 Jun 2008 12:04:02 -0500
Bought from the 'E' place for cheap. Reported symptom: video comes on and fades out. Figured it was high ESR smps caps.
Actual symptom: backlight comes on, image consist of random horizontal lines, which eventually--after some intermittent vertical scrolling--settle into a very nice image. Takes like two minutes to warm up. Shutting the monitor down for some unknown time starts the process all over again. Continuous viewing yields a stable image with good resolution, brightness and linearity. Shutting down for short periods is not problematic.
There is only one HV (100 @ 400v) cap in the ps. ESR is .46, which I assume is within tolerance. Other caps in the ps also seem fine.
This presents so like a classic cap issue (needs to warm up), that I'm going to next pull the video board and check caps there...possibly get some freeze spray and see if I can duplicate symptoms that way.
Reality check: any problem with the above procedure, or experience with this particular monitor? Any suggestions as to where to go if the above doesn't produce a dx and fix?
Thanks as always,
jak
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