[MrForbes]

the board runs at 5 volts, not 12 volts, so 228 / 5 = 46 mA

I put an ohmmeter on a handy anti-static bag, it said infinite resistance....but it's not a very good ohmmeter.

I found the wrappings for the IR board, the same ohmmeter says infinite.

Maybe I'll have to fire up my old Fluke nixie DMM, or go out to the shop and get my old 77....