My nearly 11 year old 32" tv is dying, I think. The past few weeks I’ve notice diagonal static looking lines on dark backgrounds. The picture has gone crazy and then black. Not sure if it’s the 1 hdmi port acting up or the screen itself. I’ve tried 2 different hdmi cables and I’ve swapped the PS3 and Apple TV.

Any ideas on what could be happening ?

I’ve started looking at larger replacements so any recommendations or warnings would be welcome. I’m thinking a 48" Vizio E series. I don't think I want any bigger and I'd rather not spend more than$500. I don't think there's enough 4K content out yet to pay for the extra resolution and at that screen size you can't tell the difference anyway.