No hd picture on a Philips 60pp9753 tv

I have sound when connected to either AV4 and/or AV3 input but there is no real picture. There is "scrolling color lines" no actual picture scrolling. Problem started when the power to house was going on and of during a t-storm. Picture works fine from AV1 and the side input. Have tried new DVI cord and other video cables for AV 3, no luck. I tried unplugging the tv for a few minutes, no help. Then unplugged the tv overnight, no help.