2001 - Stereo issues???

[shotouthood]

I have a bad stereo in a customers car. I have been told by local dealership and a well respected local audio repair shop that this is a common problem with these units. Anybody here experience the same? Replacement unit is 3 to 5 K, and the last time my stereo guy replaced one he got two bad ones from Porsche before he got a 3rd working unit. Just trying to see if this is a wide spread or well documented problem.

Thanks...


Vehicle is a 2001 911 - AmFm, Cassete, CD changer and Navigation