Cetnor851

When I insert a dvd the front screen switches to video mode but doesn’t do anything else after that. Rear screen doesn’t even come on. I have done some research and have found a common problem with the ribbon wire inside the rear screen which I have replaced but didn’t fix the issue. I’ve checked the fuses as well and they all appeared to be fine. Just bought this from a local dealership which of course the dvd function was the one thing I didn’t check before I bought it. Called the dealership and they asked if I purchased additional warranty, which I didn’t. But they basically said it’s out of our hands. anyone else have this issue with there DVD player?