So today I changed the display cable as the hinge was broken on the old one, I took hours and extreme care and followed the guide exactly as it isn't the easiest of jobs, connected everything back up and on the 1st restart I got a chime and a white screen which went brighter as if the OS was loaded but there was only a white screen.... so I checked everything over and everything appears fine, all neatly back together as if there was no repair.... I carefully connected the display cable to the logic board again, booted up again and to my horror it chimes and the screen flashes on, then goes black and nothing is happening internally or externally..... I even put back the old cable and the same is happening, so I changed back to the new cable and hinge.... I guess I have I screwed it up completely or is there a known reason why this is happening? I searched the net for solutions and similar issues, all I found was to reset SMC and PRAM.... which has made no difference. Baffled.
So today I changed the display cable as the hinge was broken on the old one, I took hours and extreme care and followed the guide exactly as it isn't the easiest of jobs, connected everything back up and on the 1st restart I got a chime and a white screen which went brighter as if the OS was loaded but there was only a white screen.... so I checked everything over and everything appears fine, all neatly back together as if there was no repair.... I carefully connected the display cable to the logic board again, booted up again and to my horror it chimes and the screen flashes on, then goes black and nothing is happening internally or externally..... I even put back the old cable and the same is happening, so I changed back to the new cable and hinge.... I guess I have I screwed it up completely or is there a known reason why this is happening? I searched the net for solutions and similar issues, all I found was to reset SMC and PRAM.... which has made no difference. Baffled.