Bought this used a while back and never tested it until now. The DC 8 seems to be receiving a signal and I tested the fuse so that seems to be all good. I go to plug in the my pumps, lights, etc. Nada! I can't figure out why nothing is working. All settings are set. I've manually turned the devices on and still nothing. The little dips switches on the side are set off. Am I missing something?