Do-It-Yourself Story

When starting my dryer the motor would power up and rotoe the drum and blower. Afetr about 20-30 seconds the igniter would come on then the gas valve would open and I would get heat for about 6 or 7 seconds then it would shut off. I know the burner is suppoed to cycle on and off but once the burner shut off it would not come bqack on unless I shut the dryer off and then back on. I checked for continuity on the thermistor, the thermal fuse and the high temp sensor. All three of them appeared to be ok. I ordered a new thermal fuse and high temp sensor thinking that one of them may be intermittent. Not sure which one fixed the problem but the dryer is functioning normally again.