I have two DP-DMX20L dimmer packs. Went to power the up for our annual school play, and neither will power up. Haven't a problem in the past, but it's been 12 mos since I hooked things up. What might be wrong? Can't believe BOTH would fail. Thanks.

I believe, and I could be wrong, that the DP-DMX20L uses fuses instead of breakers for the channels as well as the pack itself. I would check the fuses and make sure they are not blown.

When buying dimmer packs, always try to get breakers instead of fuses. Saves a lot of headaches. Breakers may cost more, but you will make out better when a show you need your packs for doesn't go up thanks to no spare/brunt out fuses.

You nailed it...it was the internal fuses. I just thought the probability of both units having the same problem seemed slim. Go figure.

Since fuses on both packs blew, you might want to make sure you aren't pulling more wattage than the pack can support, especially if you are leaving them on for long periods of time.

Just remember.. West Virginia --- W V A

Watts = Volts * Amps