maudio ozone audio to digital keyboard trouble

[9 volts]

Hey there, just wondering if anyone can help me out with a problem I'm having with my m audio ozone keyboard. The midi side works fine, but in the last few days I seem to have lost the ability to record/input audio. The  green signal lights and the red signal clipping lights remain on, the signal gain controls don't alter this. No audio is getting through the input stage. Anyone got any idea about this? Thanks