Anonymous posted an answer for this Vizio VP504F 50 in. Plasma HDTV:
"Logic Control D Board got nothing to do with this problem. This is your main power supply..."
Anonymous posted an answer for this Vizio P50HDTV10A 50 in. Plasma HDTV:
"I just solved this kind of problem with my VIZIO VP504FHDTV10A. It was main power supply..."