Studio Spot 250 doesn't turn on with power

I took in a SS 250 last night for evaluation. When I first plugged it in, all was good, except for the focus motor. I then put a lamp in it, gave it dmx, and now the fixture doesn't turn on when it's plugged in.

I replaced a bad fuse on the logic card- is there anything else I need to look at before trying to make it work again?
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