hello, my fujitsu 5010 lifebook screen is dark. i am told it is the inverter, the card that controlls the backlight bulbs. other than fujitsu where are parts available.is their any way to test bulbs? what kind of voltage normally power the backlight bulbs. the computer works in remote monitor mode. with a flashlight you can see screen working.i have pic's of backlight bulbs and can take inverter pic's if needed(the sreen is dismantled) thanks.