Paul C. Buff, Inc. Technical Forum

I Have a 1800 unit, a while back it just quit working. When I switched it on it would not power up, there are no L.E.D. lights, it is dead. Could it be a blown fuse?

There is no fuse on the Ultras, however, there is a circuit breaker in the lower left of the back panel. Try pressing in on that button. Otherwise, assuming you are using a known good outlet and power cord, the unit will need to come in for a look over.