The Golden Rule: Water and Electricity
Washing machines combine high-voltage electricity with large quantities of water. Any repair that requires working on electrical components — heating elements, control boards, wiring, motor — should be carried out by a competent person with appropriate knowledge. This does not mean a qualified electrician is required for every repair, but it does mean that if you are not confident working safely with electrical appliances, call a professional.
Repairs That Are Reasonable DIY for a Confident Person
Filter cleaning — Not a repair, but a maintenance task that anyone can do. Clear the pump filter every 2–3 months.
Door seal replacement — Accessible, no live electrical components involved, clear instructional videos available for most models. Requires patience and some physical effort to seat the new seal, but no tools more specialised than a flat-head screwdriver.
Drum paddle/baffle replacement — Paddles that have snapped inside the drum can be unscrewed and replaced with a compatible replacement. No electrical work involved.
Inlet hose replacement — Turn off the water supply, swap the hose, turn on. Straightforward.
Repairs That Need a Professional
Anything involving the electrical components — Heating elements, thermostats, control boards, motors. These involve live components and require proper isolation procedure.
Drum bearing replacement — While not electrically dangerous, this requires significant dismantling and the use of specialised tools to press new bearings. Reassembly errors can cause premature failure.
Pump replacement — The pump is connected to the electrical wiring harness and involves working near water. Best left to a professional.
The Cost Argument for Professional Repair
Parts for DIY repair are significantly cheaper than what a professional will charge (marking up 20–40%). However, a failed DIY repair can turn a £90 professional repair into a £200 repair with additional complications. For electrical components especially, the risk-reward of DIY is unfavourable unless you have direct appliance repair experience.