You have the digital bose amp. The sound is sent round the fibre optic ring digitally as part of the D2B protocol, i.e there is no discrete pre-amplifier -
- The COMAND tells the amp what volume etc to use for each channel, and sends the audio information for the channel as data) so effectively the pre-amp is in the digital bose amp itself.
But the control of the sound is done by the COMAND system of course - so if that is confused and telling the amp not to output any sound, it will not output any sound.
What I would do at this point is to
a) I'd do a 'reset to factory settings' on the COMAND and then pull the fuse for the COMAND, leave off for 10 mins, and power it back up again.
b) If that doesnt solve the issue, Id try and borrow an amp from somewhere else (or a COMAND unit from somewhere else)
- theres no other parts that you haven't tested that are involved in the sound output.
R
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