Well, started up at Bermuda Dunes and my GTN750 was dead. I recycled the avionics 1 power, and it came on and worked normally for the rest of the flight, but since getting home it won't come on, no matter what I do with it. So we'll see if it's an aircraft power issue or a GTN issue.
Of course, this shows the problems with these integrated avionics solutions. Losing the 750 means I lose the #1 GPS, VOR, COM, and (I believe) Transponder. Also TAWS, I think and the S-Tec 3100 is quite unhappy without it as well.
However, on the bright side, it did get me home!