Why did my Barista become unresponsive after losing steam pressure?

A while back, on one or two occasions, my Barista would lose pressure in the middle of steaming milk. I decided to descale it before using it again and see if that fixed the problem before thinking more drastically. However, when I turned it on next to begin descaling, the machine is completely unresponsive. I tried it in multiple outlets, and also tested the steam wand and portafilter separately. No sounds. No heat. I just read in another question's answers that I should test the fuses above the boiler. Would that seem like the next logical step?