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  1. #1
    us
    May 2011
    3

    CZ7a screaming for help!!

    Hi everyone,

    I'm new here, though I've been metal detecting about 12 years when time permits. My problem is that my old reliable CZ7a is acting crazy and I can't figure out what is going on, so I'm hoping the mass of talent in this forum can offer some help.

    My CZ7a is not the Pro version, but the one with the 12 AA batteries under the arm rest. I put new batteries in, made sure everything was clean and tight, and fired it up today for the first time this year, and it is really going nuts. When it is first turned on, it seems to be OK. But I can't ground balance it, and after it finds any metal in the ground it sounds like it wants to ID it properly, then I get a massively loud squeal that can only be stopped by turning off the unit. I tried all my coils with the same result. Since the only movable knob is the Ground Balance, I thought it might have corroded or just got dirty and that a cleaning might fix it. BUT I won't do anything until I get some feedback and ideas here.

    Anyone have a similar problem that they were able to fix? Or am I looking at a trip to Fisher for an overhaul? Any help and replies greatly appreciated.

    Thanks a lot
    Digger Dan

  2. #2
    us
    Big Boys Hobbies

    Jul 2005
    Moore Oklahoma
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    Metal Detecting

    Re: CZ7a screaming for help!!

    Sounds like a trip to Fisher. I would at least call them and explain situation.



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  3. #3
    us
    Director-Search & Recovery Team of Oakland County.

    Aug 2005
    In Michigan now.
    Excal 1000, Excal II, Sovereign GT, CZ-20, Tiger Shark, Tejon, GTI 1500, Surfmaster Pulse, CZ6a, DFX, AT PRO, Fisher 1235, Surf PI Pro, 1280-X, many more because I enjoy learning them. New Garrett Ca
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    Re: CZ7a screaming for help!!

    I was thinking it was more of a matter of cleaning out the coil cover till you said you tried all your coils. I think a trip to Fisher is due. It might be a broken solder joint.
    (C) Sandman, 2005. All Rights Reserved.
    "TIME IS THE ONLY THING YOU NEVER GET BACK, WHY WASTE IT SWINGING A DETECTOR THAT ISN'T UP TO THE TASK."

 

 

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