...It is built inside a little "touring case". The dimmers have a similar "built into little touring case" thing going on, but the dimmers ain't so little! ...
I suppose you've never noticed that the "little touring case"
cover/
console, fits onto the "big touring case" dimmers, and you used to have another "little touring case"
cover (without a
console) for the other side. Hint: put the control cable in the side without the
console, so as not to damage the potentiometers on the
console.
Whaddya know, 12x2.4Kw (or 3.6Kw) dimmers, control, and cable, all
in one easy-to-travel package that fits in a 1975 Ford Country Esquire simulated wood-paneled station
wagon, perfect for doing that show at the polo grounds. Lighting fixtures, load cables, and
feeder sold separately.
Have you tried moving
dimmer module#11/12 into slot #9/10 to see if the problem moves with the module or is in the pack? I bet it's the module, and that your SCRs, possibly Triacs, have "gated open." Contact your favorite local lighting shop. Even if they don't carry
EDI, they will be able to repair the
dimmer modules, most likely at a cost greater than the entire
system is worth. Even though it's only about $20 worth of parts.
If you are not qualified, DO NOT touch it. Electricity kills.
Hire a qualified professional, each and every time.