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Repair guides

Pick a type, an appliance or a brand. Every guide lists the tools, the safety call-outs, the steps and the reading you should expect.

Diagnostic · 374

Symptom → most likely cause, step by step

Component tests · 69

How to test a specific part, with expected readings

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Install, replace and hook up appliances correctly

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Core skills every appliance tech uses

2 guides for LG · Washers

Component tests · 2

Component test · Washer

Rotor position sensor (direct-drive motors)

On direct-drive motors the rotor position sensor sits on the stator and tells the inverter where the rotor magnets are. A bad sensor, cracked connector or water ingress gives motor errors even with good windings.

5 steps ~45 minmoderate

Component test · Washer

Washer motor control unit / inverter board

Direct-drive and inverter washers use a motor control unit (MCU) that powers a 3-phase motor and reads a hall sensor or tach. Separate MCU, motor windings, hall sensor and harness before buying a board.

6 steps ~45 minadvanced