my zenith hd tv, md.# c32v22, mnf. july 2002 only works with hd feed. All the other recpicles in back and the front f.x. port wont work. It was hit by a power surge twice. I have tried new devices nothing will respond. Thinking the ground and surge protector isolated hd to eart ground; therfore protecting h.d. and screen function. Also no volume out of the tv.

mitch snider, January 2010