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Old 09-22-2014, 02:30 AM   #1
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Furuno Fish Finder Ooops!

So I was replacing the electronics on the flybridge and when I went to attach the ground wire on the back of the unit, the wing nut was a bit stiff. Without realizing it, I got a bit heavy-handed and managed to shear the stud off the back of the unit (man, that thing was much more fragile than I realized...either that, or I don't know my own strength after a few adult beverages...).

There are still a few threads present on the stud but not enough to fit the ring connector and still allow the wing nut to thread on. I'm wondering if anyone has a suggestion for a repair how-to or another workable solution.

Thanks for any input.
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Old 09-22-2014, 05:01 AM   #2
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Mate get the next size up stud and have one end drilled and tapped so that it screws onto the remaining couple of threads and then use the new threaded end or alternatively have a blank piece of s/s drilled and tap to suit one end and the other machined down and threaded to the same size as the existing thread.
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Old 09-22-2014, 06:22 AM   #3
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Use a regular nut screwed on halfway and then screw another stud into that.
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Old 09-22-2014, 07:25 AM   #4
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Or not even worry about it. Probably 90% of the fishfinders out there don't even have the bonding wire hooked up. It's mainly for RF bleedoff and the old LORANs needed it more than anything.

I've been using my Furuno 1850 for years without it on my boat and almost a decade without it on the assistance towboat 1650.

I guess one could argue that some electrical component could come undone and charge the case...I don't think I have ever heard of someone being shocked by a piece of electronics gear from that issue. Usually the older Furuno units open and reclose easily...pop the back off and add another stud again if you think you really need it.

Which unit?
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Old 09-22-2014, 09:26 AM   #5
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Drill a hole in one of the heat sink fins and attach the ring terminal with a machine screw & nut.

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Old 09-22-2014, 09:30 AM   #6
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Quote:
Originally Posted by psneeld View Post
Or not even worry about it. Probably 90% of the fishfinders out there don't even have the bonding wire hooked up. It's mainly for RF bleedoff and the old LORANs needed it more than anything.

I've been using my Furuno 1850 for years without it on my boat and almost a decade without it on the assistance towboat 1650.

I guess one could argue that some electrical component could come undone and charge the case...I don't think I have ever heard of someone being shocked by a piece of electronics gear from that issue. Usually the older Furuno units open and reclose easily...pop the back off and add another stud again if you think you really need it.

Which unit?
I've never hooked one up either.
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Old 09-22-2014, 10:10 AM   #7
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Greetings,
Mr. CD. THAT'S a darn good idea!
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Old 09-22-2014, 10:15 AM   #8
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You can us a "coupling nut" of the correct thread to the existing stud and connect the ground wire to it.
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Old 09-22-2014, 12:33 PM   #9
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So many great ideas! That's what I love about this forum :-)
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Old 09-22-2014, 03:40 PM   #10
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Soldering it on could be an idea as well
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Old 09-22-2014, 03:50 PM   #11
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Thanks RT. I also am a resident of Bumpkin.

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Old 09-26-2014, 04:29 PM   #12
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Sorry for the late reply. These are all great suggestions. I thought the ground was mandatory but it sounds like it isn't. I'll try without but If it becomes an issue, the other suggestions are great solutions. I love this forum...so much knowledge here.

Thanks,

Matt
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