The only thing that would come to mind would be:
*being next to a computer, monitor or TV
*next to any flourescent lights or light ballasts.
The only other thing I would possibly suggest is checking to see if by chance there's any wires in the cavity with a bad/loose connection, or if any wires or other metal parts are touching any metal parts and shorting out. It shouldn't be, as it's a new guitar, but you never know.
Otherwise, I'd try and put some foam under the pickups to try and isolate them a little bit. If it's a floyd rose equipped guitar, stuff the spring cavity with cotton balls (under, in between, and on top of all the springs, under and on top of the claw and the space between the tremolo's block and the wood closest to the neck...). Other than that, I don't know what to say. Good luck though.
