Opening the Fisher Gold Bug PRO (repair). In pictures

27 Responses to Opening the Fisher Gold Bug PRO (repair). In pictures

• Rolan Nadia on 2018-06-24 at 18:06

  Hello i have problems with my technetik G2 . He don‘t stop to make noises. Please can you help me?

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  • Roland Nadia on 2018-10-27 at 13:42

    Hello i have a teknetics G2 and he dont stop to make noises.. i have evry thing clean and also see to all electric wire..
    inside the detector is fisher gold bug rev 4 09/20/11

    Reply
    • E.T. on 2018-10-27 at 14:45

      Replace coil! I recommend to use Mars Sniper coil for G2.
      Fisher Goldbug DP/Teknetics G2 BiAxial coil is poorly made.
    • JM on 2019-06-21 at 18:37

      Get another coil. There s MarsMD, Nel, SEF etc. I like Mars and Nel the best.
• Dimitris on 2019-09-26 at 17:00

  Hallo I’ll buy a used fisher gold bug pro dp
  How do can I check if is Chinese copy ?
  I open the case and the board don’t write gold bug rev3.0

  

  

  Reply
  • Maclenio Fernandes sena on 2019-11-13 at 01:31

    This is one of my question too. Second the manufacturer, inside the battery place there are numbers, those numbers can ensure that it’s original.

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  • RobertHD79 on 2020-04-12 at 11:09

    is this a chinese copy

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• Filipe on 2019-10-05 at 02:02

  hello, is it possible to have the diagram please

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• Pedro Ruiz Guerrero on 2020-02-09 at 19:55

  Let me thank you for such a repairing info and I wondered if you?d e-mail to me the Fisher G.B.P. schematic diagram. Thanks in advance.

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• david a loving on 2020-03-29 at 16:50

  Detector is working fine..

  I have a rev 1 circuit bd, date of 11/10/09. What is the advantage of rev 2 and 3?
  I have tried a Fisher F-5 15″ coil with the Gold Bug Pro, detected a quarter 13″ buried even with the coil frequency differences. Is there a frequency adjustment on the board? No need? > 30 yrs in electronics experience but surface mount devices are a bit tough. David in Rio Rancho, New Mexico

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• Simon on 2020-04-26 at 20:18

  Hello, would you be able to send me the Gold Bug Pro circuit diagram please, I need to try repair my Gold Bug Pro.

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• Gord on 2020-05-21 at 02:35

  Hi
  I bought and used my gold bug pro once last fall, now its spring and turned it on inserting headphones and device comes on with no sound. The screen just says bug with no operation.
  Would you have the wiring manual? Thanks in advance.
  Gord

  Reply
• George on 2020-05-24 at 13:45

  Hi
  I have a GB Pro, but it shows continously “overload” a few days ago. Is there an adjustement to do (screw on PCB)? Could you help me with the circuit diagram?
  Thanks in advance
  George

  Reply
• Tomas Cortés on 2020-11-15 at 16:22

  Hola tengo el problema de al conectar la bobina me marca overload … También al hacer contacto metálico con el pin azul .. todo esto comenzó cuando le puse una batería que no era la correspondiente .. por favor alguien pueda orientarme para dar solución ..

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  • Somporn on 2021-02-21 at 13:35

    I would like to get a diagram of this probe, I want to replace the ic thanks.

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• Tomas on 2020-11-18 at 01:03

  Hola alguien sabe qué circuito mide la sobrecarga ?

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• Andrew on 2020-12-19 at 16:57

  Hello, would you be able to send me the Gold Bug Pro circuit diagram please, I need to try repair my Gold Bug Pro.

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• GÖKHAN TUZCU on 2021-02-03 at 16:46

  MERHABA BEN DE Fisher Gold Bug ANA KARTI LAZIM REV2 YAZAN ANA KARTI NEREDEN ALABİLİRİM.

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• Jason Christopher Tillman on 2021-08-04 at 03:39

  I used mine three times until the speaker stopped working. Plugged in the headphones and still nothing. Burn the bastard on the fire and never buy another Fischer again!

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• Tomas C on 2022-01-29 at 02:39

  alguien tiene el valor de C2 ?? o las características de C2 para reparar esa pieza. agradezco cualquier ayuda

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• Kurt von Römerstadt on 2022-02-05 at 17:01

  Friends, please help with advice. I have Karma and Nel Thunder coils for Fisher F5, F11,22,44, GoldBug. For meaningful use one of the coils, I bought a Fisher Gold Bug Pro(REV4) control unit. When testing in the apartment, both coils have the same problem with a silver coin 7.8g, diameter 29mm. The sound signal is creaking, intermittent, only in the immediate vicinity of the coils and rather along the edges. ID jumps in different values. Paradoxically, it uncompromisingly detects a different silver coin weighing 2.2g and 21mm in diameter with an accurate sound signal and ID, as well the objects from other metals. Do you think the control unit is faulty?

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• Mike on 2022-02-15 at 04:44

  I am new to this, I got a gold bug pro online. Turned it on when it came and it seemed fine, put it away and a month later turned it on to use and nothing happened. I replaced the battery and still nothing. Any idea as what I should do with it?

  Reply
  • Kurt von Römerstadt on 2022-02-15 at 16:28

    Hi. We will got retire rather than got answer here. Try disassembling the unit, it’s just three screws. It is possible that one of the wires tore off from battery contacts when was handling with the battery.

    

    Reply
• James Perdue on 2022-12-17 at 09:00

  My fisher gold bug has acted like the coil was bad so I bought 2 new ones and it’s still acting like a bad coil I stared messing with the wire where it screws in and if I hold it to the right a little it acts right any idea

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• Dağlı on 2023-04-05 at 20:30

  Let me thank you for such a repairing info and I wondered if you?d e-mail to me the Fisher G.B.P. schematic diagram. Thanks in advance.

  Reply
• Arcoman on 2023-08-31 at 04:14

  hi. What is the U7 chip

  Reply
• قصي on 2024-10-03 at 07:32

  The device failed from the IC does not come out signal and works and turns off and just connect the battery remains hanging and the battery is zero

  They are picture

  Can you explain

  

  Reply