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Contribution d'origine par : Abrsvc ,


This  sounds more like a video processing problem internal to the unit.  Without seeing the unit and scoping some of the traces inside, this will be tough to try and resolve.  Parts of the video output section are working as shown by the black screen.  What needs to be investigated is why the black screen.  It could be either the input to the video processing IC or the IC itself having an internal problem.

I will check around to see if I can find any suggestions.