Anyone do them or can recommend someone who does? Our just stopped working yesterday, 8 years old so should be doing my better than that.
A friend of mine was in the game, he said that sometimes the internals just need stirring up, they would put one in the back of the van, do a few more calls and then try it...often they would work...following his suggestion I turned my faulty one upside down overnight and it worked again when put back normally for another few years. For what it costs its worth a try.