When last we looked in on the Great Water Heater Caper of 2016, I was vowing vengeance on the uncooperative elements, which in circumstances like these tend to be all of them.
For maximum spitefulness, I called in at 6:30 am Wednesday, thereby cementing my reputation as a Nasty Person for all time. The tech arrived a couple of hours later with about twice as many tools and, eventually, a sheepish admission: “I think I may have cracked the thermocouple.”
Off to the parts depot to obtain an uncracked thermocouple. He had to eat the cost of it, so it’s probably a good thing he identified the problem component fairly quickly. No further issues, and smiles all around when he left.