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Thread: AT PRO going nuts

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  1. #1

    Feb 2014
    California
    Garrett AT PRO
    24
    6 times
    All Types Of Treasure Hunting

    AT PRO going nuts

    So, in all, I've put about 20 hours in with the AT PRO and have had no problems, and am picking up on the learning curve fairly quickly. Today, I did a buddy's front yard though and my machine went nuts. The numbers on the VMI started rapidly shifting up and down up and down, and wouldn't stop. I factory reset, changed batteries, replugged everything, and it was still going nuts with all the numbers. Changed the batteries again, respun the cable. Now it seems to have calmed down, but it feels like I'm getting a lot of falses. It got dark before I could do any more, so I've given up for the day.

    It's important to mention that all of the places I've detected previously have been free of power lines and electricity. I know exactly which spot the thing got nuts, and my gut is that there may be a DSL or some other line under the ground-- will ask my buddy later. Perhaps this is EMI-- or do you think it may be something else?

    Thanks!

    EDIT: I also tried re-balancing a number of times, and changing sensitivity and ground balancing.

  2. #2
    us
    Wheres The Gold

    Feb 2010
    Vancouver WA
    Chug)Whites Classic 5 ID, (Red Whites Coin master Pro) Chug and Reds New Additions Give It Up>> Garrett's AT Pro Buttercup>> Garrett's Ace 250 Show Me the Money>> Garrets Ace 400
    7,372
    2587 times
    Metal Detecting
    Honorable Mentions (1)
    Same issue here, On Friday!!! I moved to the other side of a Small Dirt berm and everything Was Great !!! When I moved towards the top it started again!!!

    When we were walking down the Path to a New area I saw it The power lines were Almost level with My Coil before moving down!!! that's the only time this Has Happened HH Chug
    "It cant Always Be Silver Or Gold But It Is A Hell Of an Experience Pulling It Out Of the Dirt"

    Metal detecting is Like A Marathon, Your Running fast then start Slowing A Bit The You Find Something Interesting And You Pick Up the Pace!!! The Only Difference is If You Are Addicted to this Hobby there Is NO FINISH LINE HH Chug And Red

  3. #3
    us
    Nov 2012
    Cincinnati Ohio
    White's V3i / Minelab E-trac
    3,283
    1924 times
    Metal Detecting
    Honorable Mentions (3)
    Power lines, wireless routers, security systems and such will effect different detectors in different ways. If it only does it in one area I would say you found some interference.
    Normsel likes this.

  4. #4

    Feb 2014
    California
    Garrett AT PRO
    24
    6 times
    All Types Of Treasure Hunting
    I'm going to take it to different location today, and I will keep everyone updated with the results.

    Any other AT PRO people have similar issues? I know a bunch of you have them...

    Thanks!

  5. #5
    us
    Oct 2013
    virginia
    A T Pro, ace 250, pro pointer
    86
    57 times
    All Types Of Treasure Hunting
    i have on two occasions in spots i have hunted before, not sure what is up but it went away and then came back later. any info would be appreciated

  6. #6

    Feb 2014
    California
    Garrett AT PRO
    24
    6 times
    All Types Of Treasure Hunting
    Quote Originally Posted by dirtydig View Post
    i have on two occasions in spots i have hunted before, not sure what is up but it went away and then came back later. any info would be appreciated
    Does it still do it, or is it only occasionally?

  7. #7

    Sep 2013
    30
    3 times
    All Types Of Treasure Hunting
    yeah my fisher gold bug pro, does the same in diffrent locations ,,,, I just able to move away and re ground bal..... good luck

  8. #8

    Mar 2008
    CT
    Minelab Safari Minelab Excalibur 2 White's classic 3sl Garrett pro pointer AT
    535
    848 times
    All Types Of Treasure Hunting
    Banner Finds (2)
    By any chance is there an underground dog fence / wire in the yard? I ran into this last fall, my minelab went berserk.

  9. #9
    ca
    Feb 2014
    Sault St. Marie , Ontario Canada
    AT PRO International, Blisstool V3, Makro Multi Kruzer
    122
    80 times
    All Types Of Treasure Hunting
    There could also be underground lines in the area. There is power/phone/sewage going to every single building, be it over head or under ground. Plus all the wireless tech people have talked about.

    Another possibility is you're leaving your detector in the vehicle too long and it's overheating. When it's hot, it will act up a lot. Keep the machine at normal air temperature and see if that helps.

    Last but not least, I've noticed in areas where there may be manufactured gravel or sand base that's loaded in various minerals the machine can also go crazy. It's pretty much trying to lock onto hundreds of small bits of minerals in the ground. All you can really do in that situation is lower your sensitivity, ground balance often and try to pick out he good stuff from the background noise. I find in these cases it's best to dig everything decent since even good targets will be jumpy and all over the board.

  10. #10
    us
    why havent I been gold prospecting lately?

    Dec 2013
    next to disneyland
    Thanks Kellyco, and Garrett:smile:... I love my AT gold metal detector!
    469
    220 times
    Prospecting
    It might be broken and degradated terra-cotta mixed Into the soil. That can make your metal detector freak out. I have the at gold and theres one area in my back yard that has number fluxations like you described. I dug up the soil and kept finding red terra-cotta grinds in the mix. Hope its the soils and not your metal detector.

  11. #11
    us
    Nov 2012
    Cincinnati Ohio
    White's V3i / Minelab E-trac
    3,283
    1924 times
    Metal Detecting
    Honorable Mentions (3)
    Quote Originally Posted by handsoap View Post
    I'm going to take it to different location today, and I will keep everyone updated with the results. Any other AT PRO people have similar issues? I know a bunch of you have them... Thanks!
    One school I go to is impossible to hunt with the ATPro. I think it's the security system that drives it crazy. I can only take the V3i there.

  12. #12

    Feb 2014
    California
    Garrett AT PRO
    24
    6 times
    All Types Of Treasure Hunting
    Update: Before going back to the "bad" location, I took it to a local park. Everything seemed okay. Went back to location that made it go nuts, and asked the landowner if there were any underground wires or anything that she knew of. She said, no, but that there was a fairly complex "irrigation system" used to water the lawn with pipes/sprayers spread pretty frequently across the lawn. My guess is that that's what set it off to go crazy. I was just confused because yesterday after it started going haywire I reset everything (fact. reset, new batteries, cleaned under coil cover, re-wired everything) and went to another location down the street I'd already hit with no problems and it was STILL going nuts. The VMI looked like the beginning of the matrix with numbers jumping all over the place up and down nonstop. Had me worried, but I HOPE everything is okay now. I will just have to keep on taking it out in the field to make sure.

    Thanks everyone. I will update if it starts up again, or if I have to contact Garrett.

    Happy digging!
    coyote2 likes this.

  13. #13
    us
    Beach Pirate

    Jan 2014
    Florida / Michigan
    Garrett AT Pro - Garrett Pro Pointer - Stealth Sand Scoop - Gray Ghost Earphones
    4
    2 times
    All Types Of Treasure Hunting
    I've had my AT Pro go nuts several times... always power lines (overhead and burried) or hot rocks in the soil. One occasion, turned out to be a bad coil. When resetting the machine (hold down power button) and double checking connections (coil connection & battery's) failed to fix the problem, I switched out my large coil with my small one. Presto, all was well again. I called Garrett and has a free replacement coil a arrive a few days later. Garrett has outstanding customer service!
    coyote2 likes this.
    Preserve Our Hobby - Fill Your Holes, Land or Beach

  14. #14
    us
    Mar 2014
    Garret AT Pro, Pro Pointer
    12
    2 times
    Metal Detecting
    Same here. This is always power lines when ever my AT Pro goes crazy. There is this old park I would love to hunt, but can't because there is a power station right next to it.
    Garret AT Pro, Pro Pointer 2014 - $100 clad, 1 Silver coin, 2 Silver Pendants, 1 Gold Ring, 500 Bottle Caps, 400 Pull Tabs

  15. #15
    us
    Oct 2013
    virginia
    A T Pro, ace 250, pro pointer
    86
    57 times
    All Types Of Treasure Hunting
    didnt do it on the last hunt but i did change freq. i think it is a moisture problem. condensate can cause problems with all electronic devices and its always happened late in the hunt. if it happens again im calling garrett.

 

 
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