If these are the older LD-360 dimmers (dark gray/light gray), not the newer ULD-360 units (all black), then the main
circuit card runs on 0-10 vdc analog, and there are
trim pots on the card that might need to be tweaked to cure the
ghosting.
DMX versions of these dimmers used a separate input card to decode
DMX to analog, the main card stayed the same.
If the dimmers are
ghosting with the 575
watt load connected to the problem
channel(s) while the
console is unplugged, then the onboard
trim pots are the first thing to try. If the
ghosting disappears when the
console is removed, then the problem is likely the
console, as noted above.
Adjusting the pots does involve working on the dimmers' innards while
power is applied, if you're not comfortable doing this, please find a local service center to handle it for you. There isn't any way to do it with the case closed. If you've got a couple days, I'll try to find time to dig up the schematics and walk you through it, or you can
call Leprecon at (888) 422-3537.
In 15 years of working on
Leprecon stuff, this would be only the second time I've encountered LD-360 trims drifting.