A few years ago we purchased two new lights for the landing. These are square relatively low profile lights which use an array of LEDs. Normally, the LEDs in units such as these are not replaceable and if they fail the entire fitting has to be replaced. Well, a few weeks ago one of the lights failed and I decided to try to repair it because (a) it would be cheaper, (b) they are a matched pair and finding a
Category: Electronics
Scope smell
This afternoon, I tried to instil some A Level physics knowledge into Sophia by giving her a practical electronics lesson. Unfortunately, part way through, my trusty oscilloscope made a nasty crackling noise and emitted an unpleasant smell. It did however keep working, so as we were near the end of the lesson we pressed on but switched the scope off whenever it wasn’t needed. My scope is a Phillips PM3217 which I bought more than 30 years ago as unused