The wonders of YouTube

My TomTom satnav died after 5 or 6 years' sterling service. I thought it worth trying to replace the battery - fiendishly hidden in the guts of the beast and requiring the case, circuit boards, screen and hard drive to be removed to access it. YouTube seems to have a video for everything and came up trumps. Within 10 minutes of Mr Postman's delivery of a new battery (£5) it was installed and working....

....for about an hour, before dying completely.

Back to the drawing board....