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Hi Guys, I am new here and I thought this would me the right place to post my question . After a small service and battery charge this car audio system shuts down . its not even active on the screen . we checked by a proper diagnostic tool and we did find any fault AMP and all Audio system shows OK can anybody please give me any advice ? Rangrover sport 2014 (Biography ) Thanks

Hi there! Does it shut down randomly? Or it just does not work at all? That will narrow down the number of problems to look for.