Help please! missing part! and no idea where to get it!

Ok, so from your description you threw away the DC power brick--that's the thing that would go between the power connector and the wall.

You've got two choices: Buy one off somebody on eBay who has a dead Formac monitor with a working power brick, or figure out the power requirements of the monitor and kind of connector, then find an equivalent generic power brick and use that.

For eBay, just search for "Formac", maybe your model number, and "power" or something like that, and hope for the best.

For DIY: Figuring out the power should be relatively easy; either on the back of the monitor itself or in the documentation there should be a power requirement listed somewhere. Probably something on the order of "24V, 3A DC" or in that range. Finding a similarly-specced power brick shouldn't be hard. The hard part is getting it to attach--I'm guessing, though I've never used one of those, that it's going to be a brick with something that the cable plugs into, rather than the norm which is a brick with an attached cable that plugs into the device.

If you have a little experience with wiring you could probably splice your replacement brick's cable to the Formac's cable, or (unlikely) find an adapter, but this might be a good time to enlist the help of an electrically-savvy friend.

 

Sounds actually like an ADC to DVI adaptor, for connecting an ADC display to a DVI-equipped G5 (or other computer).

Here’s a link to Apple’s (probably the one you had, though Formac may have made one too): http://store.apple.com/us/product/M8661LL/B

Best price I found: http://www.amazon.com/Apple-M8661LL...1?ie=UTF8&s=electronics&qid=1277154395&sr=8-1

Unless that’s a really nice monitor, you’ll get a better deal just going and getting a new monitor, you can pick up something nice for only a little more than that.

jW