I recently bought a Minelab XS on the classified forum a few months ago.When I opened the box and putt it together I thought how amazing it looked for being a 2000 model.I tried it outside and after a few minutes it turned off by itself.I tried it several more times and the same thing happened.I called the guy I bought it from and he said it was a battery issue.I took a gun cleaning rod and taped a q-tip to it and sprayed some electrical contact cleaner on it and swabbed the contact springs in the detector.Then I did the same to the contacts on the battery pack.I turned it on and it seemed to work alright,after about 5 hunts it now turns on and stays on the main screen and the only button that works is the on/off button.I sent it to the Minelab service dept. and they have been having it 3 weeks ago yesterday.I already spent $435.00 on the detector and $27.00 to ship it off,not counting what it will cost to have it repaired if it is repairable.So what I'm saying is when buying a second hand unit beware,because looks can be decieving....