I’m running into the same thing, it’s strange. I actually got out a brand new one thinking the other was faulty but they’re both doing it.
I’m using an ATX power supply breakout board, feeding it 12V, and want to boost to 60V but the output is the same as the input. Does it require the load to be attached? I’m just hooking the DMM to the output terminals to validate currently.
Bucks great, why won’t it boost?