Problem with BT Phone Install - No Sound!

[Jezzieg]

Hi there,

I posted this on the BT forum, but no nearer to finding a solution to this problem - can anyone help please?

I have a 09/01 X5, with Nav, no DSP and no phone pre-wiring. I have a 5th gen bluetooth module (purchased from eBay), and the Bimmernav kit for a non pre-wired Euro car.

I have completed the install, including ELK800 amplifier supplied by Martin at Bimmernav (as have no DSP). Phone paired with no problem (Orange SPV M600) initially, including all phone book entries etc. Only problem is there is no audio (i.e. I can't hear the other party, but they can hear me).

I have tried adjusting the gain on the amplifier, but with no success. Please can anyone help / suggest what may be wrong?

I have also checked that all connections into the radio module appear to be plugged in, and have tried repairing the phone. That has succeeded in stopping the phone book from transferring to the car, and still can't hear the other party on the call.

Questions which you may be able to help with:

1 - How can I test the amplifier - i.e. what inputs / outputs should I test for with my multimeter?

2 - How can I identify if it is a ULF problem (could this cause this fault anyway?)

3 - Could this be a compatibility issue (I think this is unlikely as I have tried a Samsung E900, which pairs and transfers phonebook perfectly, but same audio problem).

Please help - this is driving me crazy!

Any help much appreciated.

Thanks,

Jeremy.