crwdns2934241:0crwdne2934241:0 rj713
crwdns2934249:0crwdne2934249:0:
Your problem is probably with the backlight-inverter LCD or the cables connecting them. Since the previous owner replaced most of these items I would first check the cables are all properly connected and in good condition and then consider replacements.
crwdns2915684:0crwdne2915684:0:
open