Hi choiceshot2,
I had the same problem a few months ago. Didn't matter how I set the machine up, nor where I moved the copper ring up or down to, it would just keep on buzzing.
So I slid the copper ring off the probe so it was hanging on the cable and gave the probe and the inside and outside of the ring a good wash with a dish brush and dish detergent / water and rinsed off with fresh water, and dried it with paper towel. I did this because a mate of mine thought that through use in the field I had covered the probe and slide with oil from my hands, and of course the salt from my skin, and he thought it might be the salt sounding it off. I thought it sounded a bit dodgy. but surprise surprise it calmed right down and hasn't missed a beat since.
I noticed when I first got it new, that I couldn't get it to settle down in the field at all, and I put it down to highly mineralised environment in the field, but in hindsight, I think I may have cleaned the probe when I unpacked from that first trip and it worked fine for a couple of months until I cleaned it as discussed above.
Anyway, it seemed to work for me, and probably worth a try in your case.
Good luck.
They are a good unit for what they do
adjusted the head but still it will only buzz , has anyone out there had this problem , better still have a solution , I contacted the makers web site and emailed them but seem to have little after service , which is a shame as the tool works 8)
