Anonymous posted an answer for this Sony Grand WEGA KF50WE610 50" Rear Projection HDTV-Ready Television:
"Are you using HMDI? Did you try other inputs? It looks like the video processing board..."
Anonymous posted an answer for this Samsung SyncMaster 930B 19" LCD Flat Panel Monitor:
"Mostly the screen backlight circuit defected. If you can not DIY repair, send it to a..."