VZ VY Holden Blaupunkt HU buttons/interface non-functioning

[jayno007]

Hi, I have a VZ adventra with 6 stacker HU. No radio controls work on the HU except for the Rotary volume control. Cannot turn off, tune stations, change the clock or anything. However the remote buttons on the steering wheel do work and I can change between modes and preset stations etc. There is a nokia bluetooth device fitted as per the nokia unit behind the dash and that seems to function okay. Has this been connected incorrectly at the back of the unit thereby disconnecting something else vital or what else is the go do you think? I do not have the radio manual. Cheers, Jayne P.S would love a manual if someone has one to spare!

[DevilDRake]

I'm going to guess one of the plugs came undone at the back, biggest one on the top is the steering wheel, other 2 are headunit/power