hello

i got a sony e220 monitor,the monitor does'nt power on.when i press on button the green led light glows for a 2sec and the monitor shuts down automatically ,normally the orange led binks before the display comes,i hear the sound of monitor going to off status(click,click).after this i toggled the power button nothing happens even the green led doesn't glow,it looks like the monitor shutsdown automatically for some reason!,any idea whah could be the problem?
please


thanks