Are you turning it on indoors?
If not, the way to intitialize it is first: Go outside, Start with Park 1, you need to do an EMI noise cancel (under settings) first with the coil in the air at the site you are detecting (presumably your yard). Make sure your cell phone is at least not near the control head or in airplain mode. Once the noise cancel routine is done, then ground balance. If you are still getting noise, don't be afraid to back off on sensitivity. The default is 20, max is 25, you will be OK even if you have to reduce down to 15-17 to get rid of noise. Common neighborhood sources of noise: power lines, transformer boxes, wifi, flourescent lamps. But I have had no trouble getting it to quiet down in my yard even with all of the above going on. Put some test targets in the ground to get used to the audio and display. Do not mess with any of the other settings. On this machine avoid the tendency to mode hop since each mode is like a different detetor and you will reset your learning curve. Park 1 is a great all purpose mode and learning mode, no need to change it unless you are going to a salt beach. But, if you do switch modes, unlike other detectors, you need to noise cancel and gb each mode separately at your detect site.
Let us know if you still can't get it to quiet down.
