On 08/28/2015 07:42 AM, Tothwolf wrote:
With all the different solder alloys I work with regularly, I have to ask...what type of solder caused that sort of damage? Was it the alloy itself, or did IBM use a flux which was too active and then failed to clean away all the residue? If they used a rosin-based flux, was it due to the specific activator used in the flux?
That's actually a little puzzling. 1401 core frames have survived well (got one in my desk drawer). You'd expect that the same process would be used for equipment that's pretty close to contemporary.
--Chuck
