Garrett at4

I am still working on this AT3/AT4 subject !! Not done yet .

HH...........Eugene

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http://www.thunting.com/smf/index.php/topic,34794.msg211128.html#msg211128

That should give him what he needs.   Problem with coil wires going to the board.

Thank You Eugene!


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http://www.thunting.com/smf/index.php/topic,34794.msg211139.html#msg211139

Post a photo of the Circuit board if you can.

Are there any wires still connected at all?

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http://www.thunting.com/smf/index.php/topic,34794.msg211212.html#msg211212

  Garrett AT4    I put the wires on from outside of board bottom view ,white,red,black,green.  I got it to make some noise and it seems to pick up metal , but I have some trouble in the coil as it makes strange noises when I tap it or squeeze it in a certain spot. I will try to send a picture(second try lost everything on first try) 
        Allison

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http://www.thunting.com/smf/index.php/topic,34794.msg211339.html#msg211339

Up date on AT4 with defective coil, I finally got  to the coil taken apart (no small job, it was made not to be taken apart , but I had nothing to loose) I found a loose solder joint on one of the coils , believe it or not the coil is made of aluminum wire and the solder joints were defective, I made an mechanical connection on the ground end and when I tried it again there still was a loose connection ( the connections are all filled up with silicone like material and have to be mined out to even get a small look at them) at this time the detector would turn on normally and would detect metal, when I was cutting the silicone away from the other end of the same coil it made a strange noise in the phones and now all it will do is make a 800 cycle tone in the phones when turned on and it continues as a single tone.  I am guessing when I was moving the loose connection I caused an inductive bump on the white wire and it damaged some of the electronics.  So far I have enough time in this thing probably to buy a couple good units, good job I am retired and do not pay myself very much. I put it away until I get some more imfo , if I am lucky maybe I will forget where I hid it.

                Allison

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http://www.thunting.com/smf/index.php/topic,34794.msg212338.html#msg212338