+48v phantom power problem with mbox pro

[zedkah london noise]

I am having problems getting the +48v power to come on. when I push the button it doesnt light up red like it should. I Cannot get any signal from the mic. while the button is pressed the second from top eq light in channel one comes on. Presuming this is some kind of diagnostic code how can i find out what this means? I cant see any mention of this in the manual.

This happened a couple a days ago. I upgraded firmware to 1.0.4. As soon as I upgraded i did a quick test and the phantom power lit up fine. coming back to it it has reverted back to not working.

Apologies for double post realsied I put it in the wrong place before. Any clues...Im hoping its something to do with my set up.

appreciated

richard