Radio Problem - power, but no sound

[FLi GLi]

I posted this in the BSW forum, but maybe that wasn't the best place to post it. Trying here as this is an X5 specific issue. Possibly more visibility here. Any help is greatly appreciated.


Greetings.

I purchased my 2002 X5 with factory Nav and DSP used in Dec of 2009. At the time I bought it, there is no sound coming from the radio. The radio turns on. It will lock into a station. The RDS works. Just no sound.

When I purchased the car, the PO told me that he had the Nav drive out for a while while looking for a replacement. He also disconnected the battery a day or two prior to my purchasing the car in an attempt to "reboot" the system. Following these two events (whether they are important or not, I don't know) the radio stopped putting out sound.

Any ideas on possible causes before I spend 3 bills on a used DSP amp on eBay? Does the amp need to be recoded at the dealer, possibly? I've disconnected the 3 connectors going to the amp and sprayed them will electrical contact cleaner/enhancer. Did not solve the problem. I checked the radio fuse in the fuse panel in the right side of the cargo area and it is fine.

Any ideas or assistance would be greatly appreciated.

Cheers,

FLi