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Double din powers on and then off.

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My Pioneer Av-4300DVD double din powers on and then off. My truck was in an accident and it worked fine. Pulled the entire harness GMOS-04 etc out with it.. Powered it up last night to get a cd that was in there, and then it started doing this. The head unit and radio etc were all working after the accident, Could the GMOS-04 cause this issue? Im thinking since the fuse is good in the head unit and it powers on, the screen is fine, everything works, it just shuts down after about 5 seconds, that the GMOS-04 is possibly shorted, otherwise the head unit wouldnt work at all. How can I tell if the GMOS is the culprit without everything in the truck since its totaled and the insurance took it. I used a battery to power the unit up.


Thanks. Mike

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