1994 SL 320, 94k miles; No sound at all coming from speakers or sub (Bose system) also power antenna is not raising when stereo is turned on -- stereopowers up as tho it is functioning correctly and has no error codes on the display, just NO sound at all... all fuses are OK. Any help or infoon this would be greatly appreciated!

 

http://www.carstereohelp.com/mercedes.htm
Check out the above hyperlink

I had the same problem. It was fixed by the addition of 2 capacitors @ 62.50 each for my Alpine radio.
The problem is in the trigger circuit. That is, when the radio is turned on, it activates the trigger circuit which turns on the antenna and powers the circuit to the Bose amplifier.
I have a '94 SL 500. The dealer had to send the radio out to Alpine to get it fixed. Basically, the Becker and Alpine radios are the same.
I'm trying to put a picture of the plug ofthe radiohere, but I can't seem to get it on.
Also, I'd bet that your amp is fine. It's just the radio.


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