Went out to detect some of my older haunts today and everywhere EMI as soon as I turned on the system. Tried reducing Sens, and freq, and going to mono. Had to leave the areas as nothing was working. Finally decided to move to a third area -same. So shut it down and restarted and seemed good to go. Got a mixed signal and it was a coin spill. Recovered 4 qtrs, 4 dimes , & 2 cents. Not bad so commenced to sweeping got another good hit in 90’s then dead. Took one of the quarters and threw it down, nothing. Turned off and on again and coil flashed and turned on but nothing of a signal. Went home tried several times and nothing. Very strange. Reckon it’s going back for warranty replacement on Monday. I have noticed off and on lately when I turn it on I get a lot of emi in areas I frequently don’t see that. I make a few adjustments and after a while no more emi. Maybe it was on the way out when that was happening. Don’t know.