Just to confirm, because I suspect you are correct, the DVD will work and then just blank out and if you move it slightly it will start working again?
If this is the case, then that is a connection issue. However, it may not be the power or ground wires (yellow wires) because then more than likely the sound would cut out. Even though the rear DVD is just a display, it looks like the audio is run through it.
What I would do is operate the screen while you have it loose and gently move the wires one at a time and see if any make the screen blink.
If they don't then the issue is going to be internal to the unit.
Take a look at the info below. I attached the wiring diagram and the possible causes for this issue.
Basically, it is pointing you to the display signal circuit.
You could also check the voltage and make sure it is not dropping out. However, this is not necessary because the wiggle test will most likely cause the issue to happen.
Please see the info attached and let us know what you find.
Images (Click to enlarge)
Friday, February 11th, 2022 AT 2:41 PM