crwdns2894164:0crwdne2894164:0
crwdns2894186:0crwdne2894186:0

crwdns2893792:0crwdne2893792:0 Matt Barnes ,

crwdns2893800:0crwdne2893800:0:

Sounds to me like the cable gets pinched and shorts out at certain angles.  I would replace the cable before the inverter in this situation.  If the inverter is bad, then the backlight usually stays out no matter what angle the display is at.

crwdns2892198:0crwdne2892198:0:

open