'Twas brillig, and the slithy toves did gyre and gimble in the wabe

Both of these are easily old enough to predate RoHS and lead-free solder - the speakers are 13 years old, the r/c car is easily ten. I'm not sure what caused the failure on the speakers, but the antenna connection probably got broken when I had the car open for something or other.

The lead-free solder I picked up is actually 99.3% tin with 0.7% copper (I thought lead-free stuff had a small amount of silver, but apparently not always), and has a melting point about 40°C higher than real solder.

That molex connector did what? I'm aware of tin whiskers, but that must have been something special.