Screen turns off with certain pressure applied.

I’m working on a friend’s Samsung Notebook 9 Pro NP930MBE, the 13.3-inch 2-in-1 model, and I’m trying to confirm the likely cause before opening it up further.

The reported issue was that the internal display would flicker on and off, but the problem appears to be more involved. When I first received it, the screen showed no visible image under normal lighting. However, I could see a very dim image when shining light on the panel at an angle, which initially made me suspect a backlight issue.

I set it aside and tested it again the following day. This time, the display powered on normally and looked bright and vibrant. After running for a while, it began flickering and eventually went dark again. External video output through a dock works flawlessly every time, so the GPU and external display output appear to be functioning normally.

I then noticed that lightly thumping the laptop on the desk would sometimes cause the internal display to come back on. After testing the lid movement, I found that the screen’s behavior is strongly affected by its position. If I push the lid farther back and leave it there, the display generally stays on. Applying pressure as though I am closing the lid, or positioning it at certain angles closer to being shut, causes the display to cut out.

I have already reseated the display ribbon cable at the motherboard connector, but that did not change the behavior. Windows also continues to detect the internal panel even when the screen is dark.

My current theory is that one or more conductors inside the display cable are cracked or damaged near the hinge, causing the backlight connection to intermittently open depending on the lid position. Before replacing the cable or disassembling the display assembly, I wanted to see whether anyone familiar with this model or these symptoms thinks I may be overlooking another likely cause.