I found out, at least with ac infinity, the power to the board is supplied through the mounting screws from the driver mounts, and conductive washers that go to leads that feed the led boards. 2 kiddie corners are the +/- and the other 2 are grounds. When I put my multimeter to the +/- terminals there was 0 voltage, which is why I think a internal fuse blew. I think its just a matter of finding out where it is and why it blew out.