Screen is displaying weird lines and random black sections

Left TV off for a few months while at college and came back to it doing this. Over time as the TV warms up the issue tends to work itself out but not fix entirely. The bottom 5 inches of the screen will only show white when fully warmed up. I've heard that a board can warp with heat and that might be a problem. Any recommendations? It is a Vizio model V505-J01that was bought last year. Vizio support said buy another so I honestly don't mind having to crack it open and fix it myself

So I disassembled the back and this is what I found. The "long skinny" boards don't seem to be obviously damaged in any way. Everything is still taped down and doesn't seem to be lifting. This silver piece does seem to have a crack in it but I'm not sure of its purpose. It leads from the green board under the yellow one and deeper into the TV