I was using my SD Friday night running two dimmer packs and two Ultrascan 250s. I was having quite a problem with my SD. If I tried to use my Beam or Color presets, most of the time the SD would go unstable. Lights would pulse, moving heads randomly move, and the display would show multiple channels flashing with wildly crazy settings. When I would attempt to regain control - press Fixture, Beam, Color, etc - the SD seemed to go into some sort of self test. Sometimes the SD came back to life but usually I had to power it off and back on. This of course caused the whole stage to go black for a second or two - NOT GOOD! I got through the show by just leaving the ultrascans set in a fixed position. I was able to switch between fixtures and control dimmers and light colors/gobos without the SD going bezerk. Any ideas on what was causing this??? I had good power and was only pushing about 6-9 amps out to the lights. Dimmer packs and ultras responded well when the SD wasn't freaking out so I suspect an SD issue. Any ideas appreciated.
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