x.Spot Data Error

I have a 4:1 x.Spot with around 2000 hours on it and when I came into the theatre this morning, I discovered it wouldn't strike on startup or respond to data from the controller(ETC Ion, running 1.9.8).

The fixture displays no errors and DMX tests clean up to the fixture(it's the last in the chain, but the DMX thru also shows as working). We also brought an ETC Smartfade to the unit to test with and still got no response.

If anyone has any info as to how to go about fixing(or at least further troubleshooting) this issue, I'd be eternally grateful. Show opens in 3 days and finding a replacement before then is out of the question. Thanks!
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