M9 Going Nuts

[Skull diver]

Well, after almost two weeks out of the water, I just used on the wetsand the M9 for a couple days, leaving the M8 to rest for a little.

So this morning I was approaching the deeper waters and after half an hour or so, a crazy noise started out of the blue.

No sensitivity detuning or noise cancel or GB or program change worked to keep the machine quiet.

Turned off and re-turned on, nothing, same conduct.

At a certain point, really tired by all that noise, I managed to change the min. & max. Pitch lower to avoid ears overstress in the depth audio mode and simple profile (the only combination for a neat strong signal).

This solved just partially the problem and finally I've been able to hear signals by three SS rings that were in the area.

I passed and crossed the tight space in every possible way till silence, but I mean by objects.

My Manticore seems to get crazy without a reason and in spite of the longer lower shaft to avoid the rod lock bolt interference or the usual tight cable on the upper part, it remains to understand what is happening.

Later I'll carefully dry it out and clean as usual to change the coil and try with the M8.

If at that point the noise goes away, I'm maybe the owner of a faulty M9.

This is the fourth or fifth session I dive with it...

Let's hope for the coil or I'll be forced to ship the Manti to the doctor😑

 

 

[Skull diver]

To be fair, this is what caused the strange behavior of the detector during the past few sessions.
I'm pretty sure I personally caused the damage, but I can certainly recommend using only fabric ties and Velcro to hold the wiring along the rod in place.
I am in doubt at the moment whether to proceed with a thermogun casting or send the coil to Minelab for assistance.
I doubt that replacing the 'whole wire is possible as a solution,given the resin drowned block.

 

[TampaBayBrad]

Try giving it time to dry out and then repair the tear with some silicone. At least you know it wasn't your Manticore acting up. I used waterproof duct tape in three spots to secure my coil wire to my stork leg shaft for water hunting.

[Rick N. MI]

You should contact a Minelab repair place and see what they say first.

[pjrough]

Hey, Skull Diver, sh*t happens. I am sure there will be no permanent solution for this damaged cable (assuming you´re an underwater hunter). The water will find its way inside the cable...

I would just sell it for cheap to someone who doesn't dive and get myself a new one.

Check Scotch 23 for cable protection. It is a self-fusing tape that stays elastic after it is settled. It is perfect protection from bends, cuts, and UV light. I have been using it for over 10 years for all my coils.

 

[TampaBayBrad]

26 minutes ago, pjrough said:

Check Scotch 23 for cable protection.

That stuff is expensive! $40 for a 1" x 30'......I used Gorilla all weather tape and it's been staying in place ever since the 15" coil came out.

[pjrough]

4 hours ago, TampaBayBrad said:

That stuff is expensive! $40 for a 1" x 30'......I used Gorilla all weather tape and it's been staying in place ever since the 15" coil came out.

Not familiar with Gorilla brand. Here, the Scotch tape is 12€ for 9m. Not so expensive I would say. 

[TampaBayBrad]

47 minutes ago, pjrough said:

Not familiar with Gorilla brand.

You may not have it in your country....Amazon link for tape

[pjrough]

TampaBayBrad, I have checked the link, and it looks to me that gorilla is a different type of tape.

Scotch 23 is not a duck tape. It is so-called "raw rubber" tape. There is no glue layer, the tape is of the self-fusing type. So you have to stretch it, and then it sticks to the rubber and to itself. When applied, it rubberizes and forms a single piece that doesn't delaminate easily.