VIDEO: Flattened Roller causes Thumping Noise
Thumping Noise in my Whirlpool Dryer
When a dryer has not been used for a period of time, the rollers can flatten where they sit against the drum. When it starts up, it sometimes makes a thumping noise. As the dryer is used and warms up, the roller will reform and the thumping noise will go away. Click the audio link below to hear the sound: