In short
Taking the TLS series on its own, a new noise or vibration resolves most often to a coin, a button or a wire in the blower or the drum. The brand-generic page reaches the same first answer, but the order below it changes on this roster, because reaching the next part is not the same job here. 2 of the 6 causes below can be checked without a tool; the rest need a technician.
What you observe
- A rattle that only happens sometimes — Something loose, most often in a pocket or caught in the blower.
- A rhythmic thump once per drum revolution — Anything that repeats exactly once per turn is attached to the drum.
- A squeal or a chirp that rises with the drum — A dry bearing or a roller, and it usually gets worse rather than better.
- A rumble or grinding from underneath — Below the drum is where the motor, the blower and the idler live.
- NEAR MISS — noise plus a burning smell — Stop the machine and unplug it. That is not a noise complaint and it should not wait.
Causes, most likely first on the TLS series
- A coin, a button or a wire in the blower or the drum — The blower wheel is downstream of the lint screen and catches anything that gets past it. A coin in there is the classic intermittent rattle.
- A tired idler pulley or belt — A belt that has begun to fray slaps rather than squeals, which is the one-per-revolution thump people describe.
- Worn drum rollers or support wheels — Rollers carry the whole weight of a loaded drum and flat-spot with age. The result is a rumble that rises with drum speed and is audible across the room.
- Worn drum glides or a failed felt seal — It also lets lint escape past the seal, so this one often arrives alongside a complaint about dust behind the machine.
- A loose or damaged blower wheel — The wheel is on the motor shaft and moves a lot of air. Cracked at the hub, it wobbles and knocks, and it sounds much worse under load.
- A machine that is not level or is touching something — It is free, it takes a minute, and it is the first thing worth eliminating on any vibration complaint.
Check in this order, and why
- Decide whether the noise repeats once per drum turn — Once per revolution means something on the drum. Continuous means something spinning faster than the drum.
- Open the door mid-noise and stop the drum by hand — If the noise stops dead with the drum, it is drum-side. If something keeps spinning, it is the motor or the blower.
- Check the pockets and the blower for foreign objects — A coin costs nothing to find and does real damage if it is left there.
- Only then think about rollers, belts and bearings — They are behind panels and they need the machine opened, which is where the owner line falls on many models.
Before you open anything
Safety
Before a panel comes off, the machine comes off the supply: unplug it or switch its breaker off. A capacitor can hold a charge after the power is off. If yours is a gas machine and you smell gas: do not switch anything on or off, leave the building, and call the gas utility or 911 from outside. Do not look for the leak yourself. If at any point a check would mean holding a part shut, propping a switch or running the machine open, stop: that is the point where this page ends.
Models in the TLS family
Reference| Model number | Family key |
|---|---|
| TLS752CAXXL# | asko:dryer:tls |
When to call a technician
Draw the line this way: what you can see, reach and clear with the machine isolated is owner work; the element, the fuses and the thermostats, all of which sit behind a panel on a heavy supply is not. On this page that puts a tired idler pulley or belt on the far side of the line.
Other problems covered for the TLS series
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
