Build the circuit history
The technician compares what stopped working with the consumer-unit labels and the customer account. Recent changes help establish a sensible starting point.
One symptom can have several causes. The visit follows the readings rather than replacing the first suspected part.
Structured electrical diagnostics for Willesden homes, beginning with the reported symptom and narrowing the circuit safely.
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At a Willesden booking, the technician first separates a supply issue, an appliance symptom and a fixed-wiring fault. The rooms affected, recent changes and the timing of each trip create the test plan before instruments are connected.
The technician compares what stopped working with the consumer-unit labels and the customer account. Recent changes help establish a sensible starting point.
Protective devices, circuit labels and accessible connections are reviewed so measurements relate to the correct wiring rather than a neighbouring circuit.
Continuity, insulation resistance and other appropriate readings are used to reduce the possible causes. Results are compared across circuit sections where access allows.
Final checks confirm the condition at handover. Any limitation, inaccessible section or monitoring advice is recorded so the next decision is based on evidence.
A Willesden visit may stop after one clear finding or continue through several circuit sections. The technician confirms the diagnostic boundary before extended testing is added.
Reported-symptom review, consumer-unit checks and focused testing of one accessible circuit.
Additional test points or circuit sections where the first readings do not isolate the cause.
Broader testing, return diagnostics or coordinated access across more than one affected area.
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No. An EICR assesses the condition of an installation against inspection and testing requirements. Fault finding is a focused investigation into a reported symptom or specific circuit problem.
Usually the affected circuit must be isolated for safe tests, and some checks may briefly affect adjacent circuits. Essential equipment and occupied areas should be mentioned before work starts.
The tested area, findings, limitations and recommended next step can be recorded for the responsible person. Access and authority for remedial work should be arranged before the booking.
The diagnostic visit identifies the likely cause and safe repair route. A simple accessible correction may be possible, but parts, concealed access and larger remedial work are confirmed separately before they are added.

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