And you had to
re-solder some inter-board connecting wires on the core
memory modules. IIRC these wires were little strips of springy stuff.
I'm not sure I count faults that _I've_ caused. The core memory soldering
failed when I dismanted a core module to show some people how it worked.
Had I left it assembled it would probably have carried on working.
Perhaps it would. But that doesn't mean you caused the fault. A dry joint
is still a fault; even if you are the one who makes it lose contact, it
wasn't you who made the joint dry...
Philip.