No Sound, Bose/ Symphony II, A4 B7

ninthtoe

Registered User
Would really appreciate guidance.
Audi A4 Avant S-line 2007 with original Symphony II and Bose sub/amp in boot
Has always worked fine with Dennison gateway in it for years with 3.5mm jack input
Today I added a bluetooth input to that 3.5mm jack and it worked FINE, I slide it back in then I realised I had left the little extraction keys in and could get one out so had to take it out of the dash again (I hate those fiddly things!)
I slide it back in a final time AND ... no sound. Radio is "live" and lights are on seems to be FM/AM and go to radio presets but no reaction to volume button. So im thinking I loosened a wire to the amp?
But I have checked everything, unplugged. re-plugged, and taken the radio fuse out and in again,
I have reverted back to the original leads only (not bluetooth/gateway) but radio acts as if it has no amp (or aerial) attached
Feels like a fuse has blown/ amp is dead?
** Q: Is there a separate fuse for the Bose amp in the back - I cant find it?
Any suggestions as to what to check, very frustrating as this was working fine before I ? pulled a wire out? but cant see what I've done wrong, now got no sound at all!
 

ninthtoe

Registered User
replaced the Bose amp, no improvement. disappointed that this forum doesnt appear very active.
 
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