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The monitor was purchased around a month ago and was working without issue until recently.
So the monitor works fine for first 10 minutes or so and then it goes black (backlight still ON and the power switch still BLUE, indicating it is still getting signal/power). When I turn it off then turn it back on, picture comes back, but only for around few minutes/seconds. See video: http://www.sendspace.com/file/cgjia1

The longer I try this, the shorter the time it displays a picture before going black. Perhaps an overheating issue?

Do you think this is something wrong with the PCB overheating? I kinda doubt it is a cable seating issue since it displays the picture perfectly for the first few minutes.