stripes on the monitor. How to identify the problem?

Question

Monitors

Thin stripes began to appear on the laptop monitor. It all started with one line. Gradually, the number increased and now, after a couple of months, there are already a lot of them (see screenshot). The bars periodically change color depending on what is displayed on the screen. At the moment of closing/opening the laptop lid, the image does not change, the stripes are static. When connected to a laptop monitor, everything is displayed perfectly on it. As I understand it, the problem is in the matrix or cable. Please, is there any way to find out what exactly is the problem?

Answer 1

Well, 1st is a train, 2nd is the matrix itself .. which is doubtful.
Try not to press hard on the white stripes .. so that you can see ... the result in the comments.
When turned on the same bullshit?

Answer 2

replacement matrix, decoder defect

Answer 3

Disconnecting and cleaning the cable will not help, then the matrix