I have a 55inch tcl roku tv that recently started having a black vertical shadow that's about a foot wide near the middle of the TV. I contacted tcl and they were no help besides telling me to call my warranty company. This was bought in Dec 2016 and is out of warranty now. I can still see the picture but in that area it's darker than the rest of the TV and it's pretty annoying. I've already restarted it, removed any components/hdmis, and did a factory reset. Nothing made it go away. Any suggestions, or is it shot? The shadow does look darker in person
I've seen that before.
My guess is the TV is old.
5 years isnt young.