help!! My panny g10's hdmi ports suddenly stopped working

This tv has worked without issue for years. I started to notice the other day that every once in a while, the black levels would rise dramatically to a glowing grey (I am not talking about the well known and cnet verified black level rise, I am talking "holy crap that is worse than the worst lcd ever made" sudden black level rise. I suspected that it may have been a problem with my denon receiver connecting to the tv but didn't worry much about it because it would quickly go back to normal. Yesterday I was having a problem getting any picture at all. I decided to test the tv w/o the denon in the mix from different devices straight to the tv. To my disgust, the problem persisted. No picture at all. I would occasionally (when shifting back and fourth through inputs) get either a wierd white screen or a jumbled with purple and green screen. None of the hdmi ports are responding w/ a picture. Even the side, "game" input isn't working. The menu comes up clear as day, and while I have not yet checked, I would imagine the component would still work, but this is disheartening. I did a factory reset and unplugged it for a while but still a no go. I am leaving it unplugged overnight , but I have serious doubts as to whether that will help. Please help me out.

yes. Used a couple different ones.... No go.