Re: It's not just Laptops and Smartphones
Many years ago my company had a Motorola workstation fail under warranty. When it was returned by the service techician (who IIRC had to restore the OS on site) he told me that they had discovered the motherboard was entirely covered in dry joints. They concluded that reflow was a waste of time as if the original soldering had been that bad, reflow would probably still leave a load of bad joints to cause problems later. Motorola had whined and kicked but eventually supplied a new motherboard.
The IBM PC (or, to be precise, the Dell 286) arrived just in time to retain my sanity. It is not nice working on software wondering whether this is the moment a joint is about to give up. The Dell chuntered on for years without issues.