becker grand prix 7990 no sound!
 

Hi All

Just installed the Becker grand prix 7990 in my 2000 Boxster S, but it will not say anything?

The original unit in my car is the Becker CDR-22 with CD changer and amplifier.

The reason i changed radio was to get an iPod control and the reason I chose the Becker was a) it looks similar to the original and b) it SHOULD be inter-changable as all the socket are identical.

so should be easy.

when I connect the 7990 everything seems to work, iPod, every thing. Just NO sound? The remote voltage for the amplifier on/off( pin 5 on socket A) also seems to work on=13V off=0V

when I reconnect the CDR-22 I get sound again.

It is almost as the amplifier line outputs on the 7990 are muted?

Am I going crazy?

Sincerely

I do not know that radio.

When people put in the Becker TrafficPro you need to jump 2 wires in order to power the amp. Maybe you need to do something like that, unless that is what you have already tried.