Showerthought: I was replacing dryer thermistors for months before a tech showed me the real test.
For a solid six months, any time a dryer came in with a no heat complaint, I'd just swap the thermistor. It was my go to fix. Then this older guy, Mike, who works out of a van in Mesa, watched me do it. He said 'You ever actually check the continuity change with a heat gun?' I hadn't. He pulled out his meter, showed me how a good one should drop resistance smoothly as it warmed up. The next three 'bad' thermistors I pulled? Two of them tested fine. I was just throwing parts at the problem because that's how I was shown. Now I always do the heat test first. How many of you actually test every single thermistor before you replace it, or do you just swap it on sight?