Neighbour asked me to fix his Bosch garage door remote.
Took it apart, felt sure I'd not be able to sort it as it was full of SMD components each smaller than the smallest blob of solder I can produce with my Henley "Solon" iron.*****
Did a load test on the battery in case of something obvious, but at 100mA for a second or so, the battery stayed up.
In the end, it was the indicating LED that had blown. Now, why necessary to put an indication that you've pressed the button, when tactile feedback should tell you all that you need to know?
Well, checked its output at 433.93MHz on the speccy before doing a field test before knocking on his door to return it.
Now ... here's the rub ... the LED was in series with the rest of the gubbins, so that means that the failure of an unnecessary tuppenny component rendered the whole thing U/S.
I wonder how much Bosch would have tried to charge, even assuming that they would have been able to fix it?
***** Yeah, OK, I've two Solons from 45 years ago and a host of other Antex et al irons with needle tips :-)