Firewire 800 external drive no longer mounting

My firewire 800 external hard drive is no longer mounting on my MBP. It powers up, spins, but has no reaction to being plugged into my computer. I've tried connecting it and the turning it on, and connecting it while it was already turned on. I've tried different cables and different types of adapter cables (fw800 to 400, fw800 to USB, etc.), but there is no communication between my drive and my Mac. Same goes if I connect it to my wife's Macbook, or my iMac at work.
I recently had the logic board and left i/o board replaced on my MBP, I'm not sure if this is relevant since the drive has worked since the replacements and I get the same results on other Macs.
What should I do next?

who makes the drive set up?
OWC for example has a history of bad power supplies that make the drive not accessible (drive spins up but never spins all the way up)
-matt

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