Pro went nuts until reset, why?

[Johnho]

After a week or so of sitting I turned on my AT Pro. It was in Pro mode and went nuts in areas where it was once quiet. I reset it and all was well. This has been back to Garrett already and was updated and checked out. Why would this happen?

 

[Joel-Winnipeg]

Electrical source nearby?
Overhead wires or underground cable

 

[ML]

The same thing happened to me hunting in my backyard the 2nd time I used it. It hasn't happened since.

 

[quarterhorse]

I accidently hit ground balance once, a month or so ago, with the coil sitting on the ground and the "PRO" got pretty excited like a cash register being Z'd out......I just reset it back to factory settings and all's been well, 'cept I keep hearing Rod Serling's voice telling me to do things

 

[Wheatie43]

I posted a thread on this i went thru the same thing it only got worst not saying that yours is doing the same thing mine was.After sending it back 4 times they gave me a new module and coil. So far its been ok

 

[Johnho]

Oh great. The first Pro I got had to be replaced for a faulty coil plug. This one had to go back too and now I get to think it may have to go back again. Hope not. This is my first ever detector and honestly now wish I had gone with the MXT Pro. Well, hopefully it is ok and just got mad at me for letting it sit there. Twilight Zone- ha you got that right on this thing. I liked that, got a chuckle, thanks.

John