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Old 07-22-2014, 07:25 AM   #47
Join Date: Oct 2013
City & State: manila
My Country: Philippines
I'm a: Knowledge Seeker
Posts: 23
Default Re: A guide on how to troubleshoot 2 seconds to black

Bad screen panel can cause 2 seconds to black. This time the behaviour is different. That is why, I am confused at first.

The loop is, 2 seconds to black when pushing the power button, i saw some reddish background and the "no signal" box, the LED will stay on for about 3 seconds then the screen flash again in another 2 seconds to black with the "no signal box" again, this time no reddish background. After that it's all black forever but with the LED still on. The LED in this case is blue and this not change colors.

I tried connecting the cable, and yes I can see images coming but only for awhile as this unit is always shutting down..

I'm guessing it's kinda rare issue. I tried searching for solution/s but I can't seem to find one. I replaced the panel with a known good one and it works smoothly. It's a Samsung CX743B. A 17-incher ccfl powered LCD monitor.

Just jotting it down for future reference and knowledge sharing purposes.

My theory is that there is a shorted component in the screen panel or it is slowly dying and showing signs of deterioration.

Good day to all...
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