I just moved into a home and I am hooking up a used dryer (which I'm told works). The dryer spins, but I get no heat.
I bought a multimeter, and it tells me that the receptacle provides insufficient voltage for both the dryer's spin and heat. The receptacle is a NEMA 10-30. Referring to the poles as listed in this diagram, I get the full 120V between poles W and Y, but only 45V between poles W and X (and 70V between X and Y). I think, from these DIY questions (1 2), that I should get 120V between W and X and 240V between X and Y.
I even took the receptacle off the wall, and I get the same readings from the bare wires.
So here's my question: is it time to call an electrician, or are there some other things I can investigate on my own?