LHC's $21 Million Single Joint Failure is the Most Expensive Soldering Error in Soldering History The Large Hadron Collider , the world's most complicated machine that was felled by a single faulty solder joint last month , won't be back until summer 2009 now, at the earliest—a few months later than CERN last speculated . And at what cost? $21 million in repairs. A drop in the bucket when the full $10 billion budget is considered, yes, but let's hope some of this dough is spent on a bit more magnet-meltdown-preventing solder redundancy. [AP ]