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Why Multimeters give bad readings when testing electronic transformers.

A practical demo of a Torbeck fill valve. A video following on from my previous explanation.

Inside a float (Torbeck) toilet fill valve. How they work and fail.

Inside a central heating TRV. Common problems and fixes.

My attempt to replace a Rover key fob case

Diagnosis and fix of main PCB for Beko EcoCare wm1512s washing machine

Glowing LED problem: technical explanation with 5 possible fixes

Curious demo of a glowing LED, even when switched off at the wall.

LED dimly lit, or glowing, even when switched off demo