article_snippet: research centre have had to postpone the imminent relaunch of .
article_snippet: research centre refitted 'Big Bang' machine, the Large Hadron Collider, . because of a short-circuit in the wiring of one of the vital .
article_snippet: CERN scientists expressed disappointment at the last-minute . problem, in just one of the underground machine's eight sectors, . which have been rewired and checked thoroughly during the . closedown.
article_snippet: But the research centre's director general, Rolf .
article_snippet: short-circuit because it was in a cold section of the machine, .
article_snippet: CERN spent about $150 million to upgrade during CERN down time, opening the massive machine every 20 meters (66 feet), checking magnets, improving connections. '
article_snippet: It's nearly a new machine,' CERN General Director Rolf Heuer said. '