A few years back I was in a hotel 4,000 miles from home. I was about to go to the bar, so stopped off at my co-workers room to collect him. He was on the phone with his wife; the TiVo had got into a reboot loop and he'd spent the last 10 minutes trying to fix it remotely. But nothing. In desparation he said to his wife, "I'm going to pass you over to Stephen; he's good at this stuff" and then paused... "Oh, it's working now!"
Sometimes just the treat of me is enough to scare devices into working, from a different continent :-)