crwdns2934241:0crwdne2934241:0 mayer

crwdns2934249:0crwdne2934249:0:

My best guess on this (and it is just a guess) is that one of your backlight tubes has gone out.  All the half-screen issues I have seen have this same problem.

crwdns2915684:0crwdne2915684:0:

open