The visit focuses on isolating the real cause rather than throwing random parts at the problem.
Serving Brent, wider NW London and selected West London postcodes. Best first step: send your postcode, a short symptom note and 2–4 clear photos.
A diagnostic visit is the diagnosis-first fault-finding visit. It starts with the symptom, what still works, and any safe photos you sent first. On site, the aim is to narrow the fault down in a safe order, avoid blind part-swapping, and leave you with either a local repair in scope or a clear next step if the issue is wider.
This is a standard fault-finding visit, not an emergency call-out. If there is heat, a burning smell, visible damage or a breaker that will not stay on, go straight to the emergency electrician page . Standard diagnostic visits follow the small-job pricing , and anything wider is explained before work expands.
Send your postcode, a short symptom note and 2–4 photos. I’ll tell you whether it looks like standard fault finding, a local repair or emergency help.
