Went to the Garrett factory today with my 6 month old eratic ProPointer. I have alot of customers around there in Garland. They said it had a bad coil and resolved the issue while I waited ! They also said to be careful of what battery you put in it as there are some that are shorter than others and will not make proper contact. . And to make sure the little piece of foam is in the cap. May be something to watch for. Bought a couple of sweet Garrett T-shirts while I was there and checked out their museum . Mr. Garrett has found some VERY nice things. ,Two thumbs up for Garrett service !!