DSP amplifier problem
 

I have a 2001, 4.4 X5. The radio and CD player went dead. No sound at all. The MID showed the radio stations and the tracks changed on the display when I had it in the CD mode. I surmized that the amp had gone bad. I bought one off e-bay. I installed it and it palys for about 60 seconds and then goes dead. If I turn the radio off and immediately back on it will play again for about 60 seconds. The amp is DSP. Can anyone point me in the right direction.

You are on the right track to repair... You made the right decision, becaues you did confirm that your old DSP was dead. Now, you just need to get your new DSP amp coded in your car.

The DSP amp must be coded to match the car in which it is installed. The coding changes both some equalization and crossover setting to match the car's acoustic characterists, and it tells the DSP amp whether it is instlled in a car with or without navigation. If the nav coding is mismatched, then the amp will shut itself down after about 30 seconds.

Can I code it myself??

No, that is only something that a dealer or a specialized BMW shop can do. It requires BMW's proprietary MODIC/GT-1/DIS/Progman system.

I have had it done in my car, and dealer typically charges 1 hour labor.