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Author Topic: Fluke 87 (87III) Diode Test Not Working  (Read 308 times)

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Offline pkomoroTopic starter

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  • Country: us
Fluke 87 (87III) Diode Test Not Working
« on: September 19, 2024, 04:15:48 am »
I have an older Fluke 87III and the diode test is not working.  I get no beep, no change on the display.

If i short the leads, the display updates to 0V, but again, no beep.

The speaker works and beeps on continuity tests, so it's definitely something specific to the diode test.

Any suggestions?
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Offline coromonadalix

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  • Posts: 6724
  • Country: ca
Re: Fluke 87 (87III) Diode Test Not Working
« Reply #1 on: September 19, 2024, 09:57:31 am »
service manual w schematics

83 85 87  1st series,  it should be similar

https://assets.fluke.com/manuals/83_85_87smeng0500.pdf
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