need help with doa z10

hey i bought a z10 on ebay for cheap, wanted to have a go trying to fix it.. screen is not broken but no display. i plugged it in and link recognized it... so i tried to reload os... ****** has a password on it...anyway.. tried an hdmi cord to see if i could see the display.. nothing..any suggestions?

i did a hard reset. when it starts again the screen brightens up then goes off does it 2 or 3 times then goes completly off..

anyway any help would be great... befor i take it to some one... it looks like it has been taken apart so somthing could be damaged on the inside..