Is there any sign of an image at all on the dark side? In other words, could it be just the backlight on that side that has failed? That might just be fixable but with quite a lot of skill.
There are a number of driver chips along the bottom of the screen, each driving a bunch of columns of pixels. There is just a very slight chance that you might be able to find a broken connection on one of those but I fear you may have to reconcile yourself to ditching it.