no sound through mbox all of a sudden

[Jmissy87]

Hi all

Bit of an odd one we could do with your help on, if possible.

Mbox Pro / mixing desk / iMac all working fine for 3 years (odd glitch but nothing that wasn't sorted). Anyway, turned on my xbox today and tried to play the session I was working on... no sound.

Turning on my Mbox i did notice that the level lights only just flickered, usually they peak and then fall back again. Also the power light (blue one) stayed static the whole time, it usually flashes until the iMac is up and running.

All settings say that protools is connected and streaming, but no sound.

As far as I know, no settings / buttons / pods have been touched, so just rather strange.

Any ideas???
Thanks in advance