No audio output from any source but all other functions operate (although not much use if you can't hear them!). Strangely you can hear the bleep when the volume control is turned to zero and up again from the front two speakers so not quite sure where this is generated. Today I ordered a whole used unit from Ebay for £30.00 after the well documented tug of war getting the old unit out. It arrives tomorrow so hopefully all will come good......