Did I break my fluke?

Discussion in 'Amps/Cabs Tech Corner: Amplifier, Cab & Speakers' started by kingsxman, Aug 5, 2006.


  1. kingsxman

    kingsxman Silver Supporting Member

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    I was setting bias on my Carvin amp and measuring between voltage and current. On my old Fluke 77 digital multimeter you have to move the red lead from a voltage/resistance input to a current input to measure current. (probably still the same on newer ones..I dont know). Anyway it was working fine but measuring current in the 300 ma input stopped working. It was working..

    I can plug the red lead into the 10 A setting and I can still measure a current reading...but I get no reading when I plug into the 300 ma input.

    Did I somehow break it? Can it be repaired?

    I was measuring dc current at the time...
     
  2. TheAmpNerd

    TheAmpNerd Member

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    Take the meter apart.
    Remove the rubber holder,
    unscrew it from the back,
    carefully open both halves.

    There are two fuses in there,
    a 1/2 sized 300mA to 500mA fuse
    and a 10A fuse.

    The 300mA to 500mA probably blew.

    Replace this and it should work fine again in the 300mA range.

    NOTE: Mine was factory equipped with a 400mA fuse in this position.





     
  3. kt77

    kt77 Member

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    you can get em from Mouser
    676-203414
    $20 for 5 fuses
     
  4. kingsxman

    kingsxman Silver Supporting Member

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    that was it. I took it out last night before seeing this and saw it was open. Picked some up today when I was getting some biasing parts.

    Works like a champ.

    Thanks
     
  5. brad347

    brad347 Member

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    a side note: does anyone else think the phrase "works like a champ" was coined for fender Champ amplifiers? You can't break those things! :)
     
  6. Hacksaw

    Hacksaw Time Warped Gold Supporting Member

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    :AOK
     
  7. donnyjaguar

    donnyjaguar Member

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    I'd rather rely on a champ than a charm myself. :)
     

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