This lcd tv has been dropped. To all intents and purposes it seems ok screen back light controls etc but it will only display the samsung logo for afew seconds after switching on and then goes blank sound ok
Have the same problem, one or more of the flourecent light bulbs in the back panel got broken, looking for a supplier who may keep these bulbs in stock, or other wise will see if i can get a used one off ebay for spares.
SOURCE: LCD Monitor turns off or goes blank after a couple of seconds being on
An all too common problem with lcd's, you would think they would be more reliable after being on the market for years, alas they are not. See if it does the same thing on a friends PC if you are able; if so the you will know the lcd is faulty.
SOURCE: aoc lm725 display off after few seconds
I've had a very similar issue on many Dell Monitors. Mine have been under warranty and they usually send me a new monitor, but I believe the issue lies with the power supply within the monitor.
SOURCE: Dell E173FPb 17" TFT LCD Flatpanel
Video cards that can handle two monitors at the same time have cables with two plugs on the monitor end.
If your video cable has two plugs on the monitor end, try the other plug.
SOURCE: screen goes blank after few seconds
Yeah, for most of you it's definitely the caps. The three that are 470uF and the one 330uF.
Don’t just replace them with new ones of the same type, they will just blow again. Use ones with a higher voltage rating. you can also use ones with slightly higher uF (they are just output caps for the SMPS). Mine are at like ~530uF and its holding strong.
If your having trouble with brightness there is a jumper that lets you change the amount of power going to the cold cathode bulbs. It is right next to the three bigger caps. it has three settings, 6.5mA, 7mA, and 7.5mA. it should be set to 6.5mA by default. The bigger numbers are brighter, but remember to crank your brightness all the way down before changing this jumper as 6.5mA with maxed out user brightness is the same thing as 7mA all the way down.
These are good monitors as far as stats and usability. They just have defective parts. I was amassed with how "defined" the picture is per-pixel considering it's VGA.
-Oblivion
SOURCE: screen goes blank after a few seconds
Hi ,
The monitor flicker problem. The monitor when turn on will display image for couple of second then turn black. The monitor status led is still green. This will happen each time it is turn on. The symptom at appear to come from the inverter board.
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