No sound!!

I have Volumio v2.668 freshly installed on a piZero with IQaudio DAC plus. Previous install worked like a charm but since the re-flash of the SD card I have no sound, tried various inputs (Spotify, Radio Paradise & AirPlay) but nothing, even with volume at 100. There is no startup sound on reboot either. Audio from DAC is coaxial into a analogue amp.whatsapp web routerlogin