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This is the cord you're looking for. It's the same as the power cord for PCs. Only difference is the right end of the cable as that depends on which country you are in. You should be able to grab one of these at your nearest PC shop.
remove power to your monitor; then remove the monitor's back cover and, front cover; when you can see the circuit board check for a buldged can capacitor or, two; replace these by unslodering them and, resoldering the new ones in place digikey.com sells the capacitors (don't forget the position of the capicitors they go in only one way
Initially, lets try determining which is at fault.
power supply (unlikely) - the unit powers up, even after the display going off, the monitor is till on;
LCD screen (possibly) - will have to be determined later;
CCF Lamps (backlights) and/or inverter (most likely) - a check; power on the unit, run through the routine, change channels etc. with a flashlight shine
obliquely against the screen.
If with the use of the flashlight a darker semblance of the desktop could be seen, then you have just confirmed that it is either the
CCFL or the inverter and definitely not the LCD screen.
Good luck and Thank you for using FixYa. Happy Holidays.
Unplug the cable from your PC, if the monitor shows a test image, the monitor is fine and the problem is with your graphic card.
If you dont see nothing on-screen after unpluging the cable from the PC, then the monitor in damaged. Send it to repair.