Most likely a failed control panel.
SOURCE: samsung upstage will not turn on...
happened to me today, after i turned off the phone the word "SAMSUNG" stuck on the screen, then when finally turned off. i couldnt turn on afterward. So I tried the solution by press and hold the reset button for few secs, then release it. The reset button is on the side. Then it worked. hope it works for you guys.
SOURCE: LCD TV PICTURE STAYS ON FOR 45 SECONDS THEN GOES OFF FOR 3 MINUTE
video board is shot, providing u still have sound. must replace.
SOURCE: TV will only stay on 30 seconds
It looks like a bad PSU board.
Try leaving the TV unplugged overnight, that can fix some problem related to accumulation of charges on Power Supply capacitors.
On restart start the unit without connecting to receiver box, eventually use a DVD to test it.
If that does not work, then the TV is faulty and must be repaired. In that case better ringing the number listed on the owner manual.
Testimonial: "Your solution is probably correct and I will let you know as soon as I try it. "
SOURCE: Monitor goes blank after 3 seconds -Samsung SyncMaster 920NW
hello i have the same problem, there are 4 lamps (bulbs) inside the monitor when some of them falls the system turn off, cheks and good look
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