Sony a6400 LCD problem

I couldn’t choose a6400 in the menu and figured the a6500 was the closest.

My issue happened when I was flipping my screen over. It worked fine before flipping, but after flipping it the picture disappeared and all I could see was the faint bright vertical lines, as seen in the photos

When the lens is pointed towards something bright, the monitor gets a slightly brighter silhouette, as seen in picture 2 . The touch-tracking also works, and by looking into the viewfinder, it tracks where I press as well.

It should also be noted that I sent the camera in for repair a few months back, due to a destroyed SD-card slot. Do you think one of the ribbon cables might have come loose after the repair, or is the screen itself broken? There are no visual signs that it should be, but I would like some expert opinions before I open it to check the cables.

Thank you in advance!