That’s right, it worked after shaking it around. Then it went off again. When the guy came today he said the fuse had gone in the plug this time. Now that it is wired directly after the changes today, it is currently working OK temporarily until this is resolved properly.Post #1 did imply that there was an intermittent contact / connection at the socket, as the socket tester used by the man from Bosch at first indicated a fault that disappeared after they plugged things in and out.