Motor speed fluctuates up and down during use

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Failing motor speed controller (if fitted), Worn motor brushes, Loose neutral or live connection, Faulty main PCB

Safety: Unplug before opening the housing.

Check connections: Inspect all spade connectors on the motor, switch, and PCB for looseness or overheating. Reseat or replace as needed.
Inspect brushes: Remove and check the motor carbon brushes. Replace if worn or chipped.
Examine PCB: Look for burnt tracks or swollen capacitors on the main control PCB. Replace the PCB if damage is visible.
Test on different outlet: Rule out supply issues by trying a different circuit.

Hard 4/5

Motor Carbon Brushes

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