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The power supply, the inverter, or the lighting tubes may be defective. I would bet that you need some new capacitors in the power supply or possibly some transistors. Those are the two main failure points that cause the quick power supply shutdown. It detects overload and tries to save itself from total destruction by shutting down.
I bet on capacitors, especially if you never turn the power off but let it sit in standby all the time.
if the PC can be booted up and after that the monitor goes into powersave mode... if that is the case, you can turn this function off by clicking start and then run button, In the dropdown box, enter "powercfg.cpl" (without quotes) and click ok.. Note: one can also use Control panel and then select Power option icon.
Once you are inside the power options property.. turn the monitor's timing off by selecting "Never"...
One could also turn off the power management from the BIOS setup
If you cannot even get the monitor started and got a "no signal" before getting into the safe mode, most likely you have a problem with the video card or the cable. Have them fixed by either changing the cable or the video card.
You will need to check if the refreshing frequency rate if you have the video card or the drivers changed.when the refreshing rates are not the same between the monitor and the PC's video driver, it will give the same problem
Unplug your dekstop from the electricity then press and hold the power button on your desktop for couple minutes with out no power cable attached to it then let go of the power button then connect your desktop back to electrical outlet and press power button once that should give you display once it turns back on you can go into your power saving options and turn off power saver mode as its conflicting with your LCD sometimes this can occur if you have Norton antivirus installed if after doing the power drain and still get same message then you can try using a different monitor if you have one for a test. this issue is not with your monitor but with the PC has been stuck in sleep mode but the power drain should solve your problem.
Sounds like you may have had a power surge.??
Disconnect power and signal input.
Turn the unit off for 20 minutes or so. Check the outlet against another device. ( Light )
Turn unit on without connection to PC video.
If you get a no signal, you good to go . Reconnect. If you continue to get a flashing light on power button,
Check warranty, get it back to Samsung for repair.
Hope this has helped
i get a similar thing, i accidently entered sleep mode then turned off my computer at the power button on the back, now i turn on my monitor( i dont get blue flasjhing but it jsut goes on and it doesnt register, then says going into power saving mode and the colour on the button turns yellow its very frustrating :(
Cant say for sure. The display seems to be working, and the computer signal seems to be the problem. It could be a faulty cable. Check the pins on the cable monitor and see if they are bent, etc. If the connectors are Ok, it could be the converter or the main board that has the fault. This could be caused by a power surge, or just a mechanical failure. There is no easy diagnosis for this\ one, without actually checking the parts. I would recommend taking it to a repair place.