If the contents of the drum check out okay then a bad drum support roller could be causing a thumping noise.
Dryer vibration on floor.
If a stackable washer dryer unit is vibrating it may not be level.
There are several ways you can complete this task in a short time for little money.
Step 1 check if it s level.
A damaged idler pulley idler pulley bracket or idler pulley tension spring could.
If the laundry appliances are on the main floor and adding bracing in the ceiling of the level directly under the washer is possible this should give the washer a sturdier stable floor and minimize vibrations.
Preventing a stackable washer and dryer from vibrating is an easy task that you can troubleshoot and tackle yourself.
Multiple issues can cause a dryer to vibrate and make a lot of noise from an overloaded dryer to a defective component.
I haven t tried this yet.
My again non physics expert mind s theory is that this spreads the vibration load out to more planes points of contact.
Noise from the dryer often means that a hard object is clanging around inside the drum the zipper on a sweatshirt change left in a pocket your phone.