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I've got a Vizio M3D470KDE tv and it's having some issues. Firstly, it seems like only 1 or 2 of the HDMI ports work. The main issue is the picture that does come in is jittery and glitchy and has horizontal and vertical lines across the screen that are inconsistent. That's the part that I don't understand, the lines and glitches are all over the place. For a couple seconds the picture will be fine, then it will be all over the place. The issue is there with the menu up and I've tried my Comcast box as well as a PS3 and the issue is the same. Any suggestions or help would be greatly appreciated. I've attached a link to some pictures of the issue. Thanks!

 

 

http://imgur.com/a/3ezAA