John G Orlando , FL August 13, 2017 Appliance: Samsung Dryer DV48J7700EW/A2 Samsung Dryer Dv48j7700ew/A2 / 0000: Broken idler pulley. How to replace Dryer Thermostat. I first called an appliance repair company, which was a mistake. The guy came in, looked around, talked a lot and misdiagnosed the problem. He then said it was unfixable and that next time I bought a dryer, to get the extended warranty. He said that the electronic parts were at fault and that it would cost more, or at least as much to replace them, as it would to replace the whole machine. After paying him to go away, I found you guys on the internet. With the help of your videos and parts, I figured it out and fixed it myself. Thanks. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes