Camera with scratches and leaving image

Hello I have a Spark that the image keeps coming and going and both in the moto foto and in the video mode there are drizzles and scratches on the screen.
The PTZ and Flat cable have already been replaced but the problem persists.
We put on a new complete gimbal and the problem persists. And his camera on another device works perfectly.
So the problem is certainly with the Plate.
Has anyone experienced this problem and would know the solution? What is the plate repair that should be done?
Thanks.
Vilmar - Blumenau (Brazil)

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