The short answer
A new noise from a Ostba washer is most often a coin, a button or an underwire between the basket and the tub rather than a mechanical failure — a light machine amplifies everything the load and the floor do. This is a compact automatic machine with programmes of its own, hose-fed and hose-drained rather than plumbed in, and that is what sets the order below. Most of what follows is owner work; the list stops exactly where a panel would have to come off. These are fitted under a counter in an office or a small kitchen, which means a cutout, a fixed position and very little airflow at the back.
What you observe
- Heavy knocking during the spin — The load or the floor, far more often than the machine.
- The machine moving across the floor — A light machine on a slick floor walks, and then hits things.
- A metallic rattle at speed — Something trapped, and it is worth finding.
- NEAR MISS — a squeal at the start of agitation only — That is usually a belt, and it is a different and much cheaper repair.
Causes, most likely first on this platform
- A coin, a button or an underwire between the basket and the tub — The classic metallic rattle that only happens at speed. It is worth finding because the object keeps working at the tub until something gives. Anything that depends on air behind the cabinet is therefore compromised before the appliance has done anything wrong.
- The load gathered on one side — First, and on a light machine it is most of the list: a towel or a sheet collects against one wall of the basket, the machine tries to spin it, and the whole cabinet knocks. Redistribute the load and the noise is gone — which is the test as well as the fix.
- The machine walking on a slick or uneven floor — Ranked high for a portable because it is light and it is usually standing on tile or vinyl beside a sink. It walks a little on every spin, then knocks against whatever it reaches, and the noise gets attributed to the machine rather than to the floor.
Check in this order, and why
- First: turn the empty basket by hand and listen — A metallic rattle with no load in it names a trapped object. On a unit fixed into a cutout, start with what the cutout is doing to the air behind it.
- Second: stop the machine, redistribute the load and restart the spin — It tests the top cause and fixes it in the same move.
- Third: rock each corner and check the floor under the machine — A light machine on tile walks, and the noise is often the wall it reaches.
What an owner can safely check
- Turn the empty basket by hand and listen — A metallic rattle with nothing in it names a trapped object.
About 10 min
- Stop the machine, redistribute the load and restart the spin — It tests the most likely cause and fixes it in the same move.
About 10 min
- STOP HERE before removing a panel — Belts, couplings and bearings all sit beside mains wiring in a wet cabinet.
Before you open anything
Safety
Unplug the machine before you open any cover — mains wiring and standing water share the inside of this cabinet. Bail the tub out before you tip or move it, both because the water will go over the floor and because a full machine is far heavier than it looks. Never run it with a cover off to watch what happens, and keep the drain hose secured before every spin rather than after the first flood.
When to call a technician
Call when the load is balanced, the machine is level and clear of everything it touches, and the noise is still there. A squeal or a thump is a belt or a coupling and is a routine repair; a roar during spin that has grown over months is a bearing, and on a machine this size that is usually the point at which replacing beats repairing.
Nearest pages of this class
What this page does not cover
This page is written for the appliance class and this symptom, not for one family or model line. Where a family- or model-specific page exists for your unit, it is the more specific answer and it is linked from the sibling list — go there first if your model is named there. Deliberately not here: wiring colours, board part numbers, torque figures and panel-removal sequences, all of which differ by family.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
