Faders not reading value's

H4 + OS 550
This is not happening all the time but once in a while I am see this. A hard reset and all is good ?
????
This is not happening all the time but once in a while I am see this. A hard reset and all is good ?
????
Comments
After powercycling, the faders were working fine again.
software 1.2.1
Anyone any thoughts?
with regards,
san
if this happens go to the hardware-test in the control-panel and see if they work there.
I will do that next time.