Quite often things break – sometimes I’m able to fix them.
The way I see it is that if it’s broken and is going in the bin then I’ve got nothing to lose by taking it apart and trying to see if it can be fixed.
Most recently I had the external thermometer of a wireless weather station stop working. I was pretty sure some water had got into it so I dried it in the airing cupboard but it still wasn’t responsive. With nothing to lose I took it apart, saw that there was a fair amount of corrosion on the circuit board and almost gave up. Just on the off-chance that the components were still ok and the corrosion was causing a short I got an old toothbrush and cleaned it up.
Miraculously this worked and I’ve saved £35 on a replacement. Result!