Tesoro potentiometer question
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  • 2 Post By kingvegan
  • 1 Post By Professor of Engineering
  • 3 Post By Carl-NC

Thread: Tesoro potentiometer question

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  1. #1
    us
    my dog ate my permit

    Sep 2014
    Sonoma county CA
    whites 5900, Tesoro Tiger Shark on order
    73
    112 times
    Metal Detecting

    Tesoro potentiometer question

    I have decided to try and fix my tiger shark myself because I think I may have it. The threshold pot has 100k marked on the side but the one in my machine is reading 300k with the pot turned all the way down and in the millions turned up.

    The sensitivity pot though I can't find a marking, mine is reading 5k on my meter, is this correct?

    thanks

  2. #2
    Charter Member
    us
    Oct 2014
    Massachusetts
    Garrett: AT Pro, AT Gold & Infinium; Minelab: Explorer SE, II & X-terra 705; Tesoro: Tejon & Outlaw; White's: V3i & DFX
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    Unless the pot is isolated you may be picking up a resistance source in another location plus the pot.
    kingvegan likes this.

  3. #3
    us
    Sir

    Sep 2015
    Connecticut
    Minelab
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    Best of luck in repairing your detector.

  4. #4
    us
    my dog ate my permit

    Sep 2014
    Sonoma county CA
    whites 5900, Tesoro Tiger Shark on order
    73
    112 times
    Metal Detecting
    Quote Originally Posted by Professor of Engineering View Post
    Unless the pot is isolated you may be picking up a resistance source in another location plus the pot.
    yeah I was afraid you would say that. I was hoping not because of the way the pot next to it was registering on my meter. But that probably makes no sense, I don't know what I am doing, just a book from the library and a bunch of youtube vids under my belt right now. I am going to try to fix anyway as soon I get the tools I need to remove the board. I will let you know.

  5. #5
    us
    Mar 2003
    Oregon & Texas
    Custom Designs and Prototypes
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    All Types Of Treasure Hunting
    Quote Originally Posted by kingvegan View Post
    I have decided to try and fix my tiger shark myself because I think I may have it. The threshold pot has 100k marked on the side but the one in my machine is reading 300k with the pot turned all the way down and in the millions turned up.

    The sensitivity pot though I can't find a marking, mine is reading 5k on my meter, is this correct?

    thanks
    Measure the pot across the 2 outside lugs. Wiggle the probes a bit to ensure good contact. Reverse the leads (polarity) and measure again.

    Most Tesoros have a 10k sensitivity pot.
    I believe it, therefore it is true.

  6. #6
    us
    my dog ate my permit

    Sep 2014
    Sonoma county CA
    whites 5900, Tesoro Tiger Shark on order
    73
    112 times
    Metal Detecting
    Quote Originally Posted by Carl-NC View Post
    Measure the pot across the 2 outside lugs. Wiggle the probes a bit to ensure good contact. Reverse the leads (polarity) and measure again.

    Most Tesoros have a 10k sensitivity pot.
    Thanks Carl. I have not been able to find anything!

 

 

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