Original post by: originalmachead ,
You should have a LED-backlit TFT active-matrix "glossy" display ''(not an LCD)'' - which means the controller chip or connector on the logic board is bad. ''' Try an SMC reset.''' I would talk with your vendor about why the displays backlight is not working.... examine the cable and connector for burn marks/poor connection. If you have not '''connected to an external display''' do so. If you see no image there you have a bad VGU/VGC or logic board issue. Of course a good image points back to an internal display link problem which is controller chip, connector, cable or LCD screen. ''If this Answer is helpful '''please remember to return and mark it '''Accepted.''