Dryer would turn on and I would hear a slight click but dryer would not turn. Looked at YouTube and it mentioned some problems it could be. Somehow, I got AppliancePartsPros web site and read other people comments and looked at videos. I opened the back exhaust area and determined that the belt was not broken. From all the info I got, I narrowed it down to 3 parts, Dryer Thermistor, #AP4201716, Thermal fuse# AP4201894 and Broken belt switch# AP4044838. I could not test the old parts, so I ordered all 3 to be safe. In 45 minutes, (after looking at their videos on the web site again) I installed them. I also took the opportunity to clean out the lint exhaust line. Dryer started up and is working better than before.