Dilor Litepak / Trimming

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Hi group,

I've got two Litepak systems made by Dilor Industries Ltd. They're
labeled as Model 636, and there's another number on them also,
LR39552. I discovered that Dilor merged with Douglas, but upon
examining Douglas' web page, it seems they don't do theatre stuff,
only residential/commercial and architectural lighting.

Now, my problem is simple: some of the channels (maybe all) glow dimly
even when the level is set to zero. I'm pretty sure it's not the
board, as it was sent in for repairs not more than a couple of months
ago. Also, I think (not absolutely sure) the problem still happens
when the control cable (analogue) is unplugged.

I'm aware of the "preheating" concept, but some of the channels seem
to have gone a bit overboard here. I was just wondering if anyone
here is familiar with these dimmers and could tell me whether they
have trimming pots or equivalent and, if so, how to set them. Now,
you might say this is something to leave to professionals, but in my
situation this is not an option. Either I adjust them myself (good
basic knowledge of electronics) or they stay as they are. I'm willing
to take the time to actually unplug the pack, set the trimpot, plug
it back in, turn it on, and check the channel... repeatedly.

If you think this is not actually a trimmer-fixable problem, I would
appreciate any ideas you might have as to what is actually going on
here.

Thanks in advance for any help you can give.

- -- 
Chris
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