yeah, I would try it with an ac adaptor (one from the genesis would work)...
i havent had that problem but I do have a problem with mine:  The sound doesnt work...Has anyone had this problem? (no sound from speakers and no sound if I plug headphones in either)
thanks
I had that problem before, try cleaning the cart and connecters, if they are not clean the sound goes completely out.
I tryed the AC plug, dosen't help. The brightness adjuster is working fine. Thanks, but keep trying