Thick dark horizontal lines in footage

I'm getting very thick, maybe 5 or six very dark horizontal lines moving slowly vertically through all my footage, especially in low light shots. It can even be seen on the cameras menu system. Updated to latest firmware and it's still there. Not getting any usable footage out of this cam. Anyone heard of this problem?

I've never had that on my BMCC, but I have on my 5DmkII. I just turned it off, removed the lens and reinstalled. Turned on and it was fixed.

Yes, a few people had that problem. There was at least one case where it was repaired by BMD. Just contact them.