Tv stored for a year in a room before finally installing it, but now it has a black strip in the middle. Is there anything I can do or do I give up and take it to a service?

What it says in the title, basically. We moved last year and we couldn't install the TVs bc the walls were too thin to hold them up, so my dad stored them in a room and he didn't get around to installing them until today (Even though I insisted it was probably a bad idea to leave them so long) and it has a black strip in the middle.

The stripe began as two green vertical pixel stripes, then it turned into a big color stipe and then it turned into a big black thing that was like a fifth of the whole thing, right in the middle.

I know we should take it to a repair store but before we do that, is there anything we can do or nah? Ik there's probably nothing to do, but in the very slim chance we can fix it at home I'd rather do that since we don't have an easy way to transport it rn (Taking the tv on a bus sounds like a nightmare, ngl)