Doh… In looking over my wiring it looks like I misconnected output of OSPi to output of expansion zone shorting the power supply. The regulator is now shorted and outputs 37V instead of 5V. Not sure if I will try to repair this myself or send it in. Still would like to get a parts list. The only one I found on line (github) is way out of date and uses a different part number regulator.