Pioneer AVH-4000 screen problem? please help

[crfrider 10+ year member]

a yes my buddy has a pioneer avh-4000 and the problem is it was working fine till now it has just a black screen that says caution, screen may be reversed? well we cant figure out how to get this screen off, any help thanks

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[trevor87 5,000+ posts]

sounds like its in back up camera mode somehow

 

[crfrider 10+ year member]

anybody thanks