Putting my materials testing hat on - it probably suffered torsional
failure.
Wire ended 1W suspended off board, if one end swings one way and the other
end swings the other then perhaps a torsional twist that is enough to part
at the weakest point of the conductive strip.
--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/