Reply to Huge Dicer problem, please help

Hey guys.

My Dicers have developed a problem, the one plugged into the USB works fine, midi and leds work. However the secondary one, the one plugged in with the link cable doesn't light up or respond.
I have tried a different 3.5mm stereo cable but that didn't solve the problem.
I have tried them in both a PC and a Mac, but they don't work in either.
Here is the story;

I was at a gig, Mac plugged in, Dicers plugged in all working fine with Traktor running. I was on last so I put my Mac to sleep with everything plugged in. When I woke it 2 mins before my set there was a "USB over current notice" on my screen saying my USB device had to be shut down. This was of course the dicers, so the next day I tried them again with the same notice. No lights on either of them, about a week later I tried them again and the notice no longer came up, however only one works as mentioned above.

The only conclusion I can make is that something happened when the Mac went to sleep or woke.

This is very frustrating and I feel I have a poorly built product with an excellent design and huge potential sat gathering dust.

If anyone else has come across this, please let me know how you fixed it