I posted about my ProPointer being erratic and unusable because of it a while back. Not sure if it is the same problem you are experiencing or not. Mine would detect metal, but was so erratic that it was unusable. I had sent it in to Garret and they were going to charge me (can't remember exact amount) I believe around $75 to put a new coil on it. I said no thanks, just send it back. I did look on Youtube and found several videos where they removed the circuit board and there are three wires that go from the board to the coil. One is insulated and the other two just are coated with a thin shellack. These evidently rub on the circiut board and cause it to sound off when no metal is present. I just removed the circiut board and sandwiched the three wires between about an inch and a half of black electrical tape keeping the wires separated before sandwhiching. My Propointer had problems since new. Now it works like it should with no falsing. You do need to watch the videos if you are going to try this. If you aren't careful you can damage the on/off switch while removing and reinstalling the board. In my case I figured I had nothing to lose and it was a last ditch effort before buying a new one. It took about 30 minutes and I could probably do it again in ten. I was irritated that Garret wanted to charge me for a new coil. Probably one with all three wires insulated when it didn't need a coil at all and it was a design flaw, which was their mess up.
