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New to the V3i and need some help

K

Kenova

New member
I purchased a new V3i yesterday and already have a problem. I think it might have a bad coil. When I first turn it on and load the default C&J program, the unit goes nuts with beeps and vdi's all over the place while holding the coil in the air (overload?).


Is this a bad coil?
 
Any electric fences around? Can you move to a different area? Maybe EMI interference. Check your disc. settings and lower them and see what happens.
 
No electrical fences around that I know of. This is in my yard on a dead end street with 3 other houses on it.


I just went outside and took a little video of what I am experiencing. If this is EMI then this sux because my other detector doesnt do it.


http://smg.photobucket.com/albums/v187/Carolynncota/?action=view&current=VID00004.mp4
 
I noticed you did not ground balance the detector first. Leave the coil to the ground when you power up then do a proper ground balance an see if you still have the same issues.

Gary
 
That is another problem all in itself, ground balancing. How can you ground balance a detector that is falsing like this? When I pull the trigger to ground balance I get all kinds of bleeps and static and dont hear a good threshold.


I have always made sure the detector is stable before ground balancing. Is this not correct?

This problem seems to be EMI i guess, but my concern is that I have to lower my gain to 2 or 3 just to get it stable. Now with a gain of 2 or 3 on the V3i just doesnt cut it for me, with such a low gain i can barely put up a silver dollar at 2 inches air testing. Set up this way the v3i doesnt even come close to competing with my other detector.
 
That is the rx gain and not the discrimination setting { sensitivity}. Did you try to lower the disc setting a little. Also there is a sticky thread at the top of the forum about frequency offset for EMI interference.
 
You may very well have a bad coil, but try to ground balance somewhere other than your yard. You could have a power transformer or underground wiring nearby. Do you know someone with an extra coil you can try?
 
Kenova said:
That is another problem all in itself, ground balancing. How can you ground balance a detector that is falsing like this? When I pull the trigger to ground balance I get all kinds of bleeps and static and dont hear a good threshold.


I have always made sure the detector is stable before ground balancing. Is this not correct?

This problem seems to be EMI i guess, but my concern is that I have to lower my gain to 2 or 3 just to get it stable. Now with a gain of 2 or 3 on the V3i just doesnt cut it for me, with such a low gain i can barely put up a silver dollar at 2 inches air testing. Set up this way the v3i doesnt even come close to competing with my other detector.
Click to expand...

You should see a silver dollar at 6" easy with the gain at 2. You must have a really bad coil, or under ground power wires shorting out. I would definitely try going a block away and trying it again. If it still does it get on the phone with Sweet Home and direct them to the thread. You will have a new coil in no time if they can determine it over the phone.
 
Larry (IL) said:
You may very well have a bad coil, but try to ground balance somewhere other than your yard. You could have a power transformer or underground wiring nearby. Do you know someone with an extra coil you can try?
Click to expand...



There is not any underground wiring nearby but there is a transformer off the edge of my yard. I am not pleased if the v3i is this susceptible to EMI because I have used my other (cheaper) detector in my yard many many many many times and never had a problem from EMI.

I dont know anyone with another coil
 
I would suspect the transformer causing interference, some of the larger high voltage ones can cause EMI a half block away. There are ways of reducing the effects, see sticky posts above.
 
Does EMI from a transformer come and go? Reason I ask is I took the v3i out in my backyard again and turned it on like in the video and no falsing at all.
I could even turn the gain up to 13 in the stock C&J program and still was very stable.

Then I went back out a few hours later and it did exactly like in the video, falsing like crazy.
 
What is the transformer feeding, is it just your house or more then one. One way to test if it
 
I don't know.....I had that kind of behavior with 1.0 (and a little with 1.3), now none of that in some real tough spots. Can you get another coil from somewhere to see if it is the coil?
 
nw1886 said:
I don't know.....I had that kind of behavior with 1.0 (and a little with 1.3), now none of that in some real tough spots. Can you get another coil from somewhere to see if it is the coil?
Click to expand...



I dont know anyone around me with a coil or detects for that matter.
So this V3i is all trial and error for me. Mostly error LOL
 
I have never had a coil do this so I assume this is a bad coil, What do you think?

If I barely touch the coil it falses,

http://smg.photobucket.com/albums/v187/Carolynncota/?action=view&current=VID00009.mp4
 
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