I also have 3 Cdi 1000 that I had to turn off for a couple of hours and now all 3 will not power up. I checked the fuses in all three and the switch in one unit and they were all ok. They are not under warranty and the units serial numbers were also not in the recall list for faulty switches. Now I'm concerned what will happen when I have to turn off the other 4 amps. Suggestions please!