Anyone have this problem ?

[John 'n' W.Va]

I went to the beach and my f-70 won't gb. I know how to gb it on the beach. Came home and the same thing happened. It stays on 90. Of course, no depth. changed batteries, ck cable, etc. Everything else works. It is my favorite detector. Any suggestions?

 

[Elton]

if that does not work call FT for a send in. oops do you have a different coil to try.......before send in.

 

[mudpuppy]

Do a factory reset? Since everything else works, I doubt theres anything mechanically or electrically wrong...just one of those flukes I hope...I guess also trying the HZ shift may do something...I know we try all of the buttons we can trying to straighten something out...sometimes I get mine all scrambled up by accidentally hitting notch buttons, and all sorts of other things so I just factory reset and everythings cool. Good Luck, let us know.
Mud

 

[Dave J.]

Please see page 13 of the user's manual.

--Dave J.

 

[John 'n' W.Va]

I had already tried most of the things suggested. At my age I can do stupid things. So today I carefully went over all your suggestions again. It resets fine to factory default. All #'s look good. Still gb at 90 only. Hz shift did not help. Different program did not help. Different coil did not help. Cable screws down with tight fit. New batteries. ON off volume fine. I can pick up my car at 2" only. I actually went through a mild depression and denial for a few weeks hoping I would turn it on and all would be OK. Reality is finely sinking in. I'm done for.

 

[Dave J.]

John, the F70 can balance all the way to salt but it sounds like you're doing it wrong. Please read page 13 of the user's manual. If you lost your paper copy, you can find the manual online on the Fisher website.

Meanwhile........ if you can pick up your (metal?) car at only two inches when you'd expect to get a beep up to several feet away, the problems have nothing to do with balancing to salt, they're something else-- either in the machine (including possibly the searchcoil), or in the way you're using it.

What do you get in an "air test" on a nickel?

--Dave J.

 

[John 'n' W.Va]

John, the F70 can balance all the way to salt but it sounds like you're doing it wrong. Please read page 13 of the user's manual. If you lost your paper copy, you can find the manual online on the Fisher website.

I know how to go to auto tune to gb in salt. I do a lot of detecting on the beach. I have lived in Fl for over 20 years and have lots of family there.
I have quick access to my manual in a file with other important detecting info.

Meanwhile........ if you can pick up your (metal?) car at only two inches when you'd expect to get a beep up to several feet away, the problems have nothing to do with balancing to salt, they're something else-- either in the machine (including possibly the searchcoil), or in the way you're using it.

Salt gb is not the problem. I have changed the coils. The pins look good. I have hand fulls of minnies and gold rings. I must be doing something right. I started detecting with a bf in the 60's. Although the older I get the dumber I get.

What do you get in an "air test" on a nickel?

Discrimination mode will not pick up a nickle in factory settings. Auto tune will pick it up at 2".

--Dave J.

I would probably make a good tester for a detectors durability. When I am not working I can log 50 hours a week detecting. I always take a plastic bag with me when I go into the woods in case it rain to protect the electronics. I'm sure the caves didn't help. I haven't worked in a while but start back Monday. I will have to get it fixed. After a check or two I will be sending it in to get fix. I was probing at first to make sure I didn't miss something.

I really appreciate every ones responses.