Okay, so I bought a 2011 MacBook pro with this issue. The glitch looks like old tv signals. The back screen case is open on mine. Applying pressure on the screen causes the LVDS at the back to seat. In my situation, it’s better to open the back and lightly press the black plastic ribbon vs pinch the screen. This is because pinching uses the entire screen to try to put pressure on a small area. It may or may not work and can easily back off. At the start I was also using a lot of pressure and this is a little dangerous. I think cardboard to hold the connection in will be my next step. If you can’t open, the cable is around where the F2 cable is from the front. That would probably be a better area to target.
