Perhaps I can beat your 42 years now Gordon!.
I've just had another dry joint on my early FT-101 (FT-277) fail after almost 52 years.
I had been working on the radio on the bench and was just doing checks before putting the covers back on and had no Tx output. The meter on Ic went full scale hard against the end stop. The meter shunt had become detached from the finals socket and so the cathode current was flowing through the meter and not the shunt. The shunt had obviously been soldered but it was probably not a well-made joint and after many years of getting warm and then cooling down had caused the joint to fail. It has now been resoldered and should last another 50+ years!
73,
Peter
