Author Topic: Fluke 87 Continuos Beeping Problem Fixed  (Read 8831 times)

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Offline fornext

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Fluke 87 Continuos Beeping Problem Fixed
« on: July 24, 2015, 08:03:37 am »
I've bought my Fluke 87 Meter new about 20 years ago.  I love it, so today when I turned it on and it beeped continuously in every position of the rotary switch, I immediately searched for answers.  I found manuals, but the continuous beeping was not mentioned. 

Someone suggested replacing the input receptacle block, those run about $32 on ebay.

Instead I tried cleaning the receptacles with contact cleaner on Q-tips, there was a lot of grime in there, but it still beeped afterwards.

Looking closely I saw no cracks in the receptacle plastic or around any of the solder joints.  But I re-soldered all of the receptacle solder joints using fresh solder, the idea being that there might have been hard to see stress cracks around a pin.  And it worked.  No new receptacle was needed.

Perhaps this will save someone else some time and money.

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Offline retiredcaps

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Re: Fluke 87 Continuos Beeping Problem Fixed
« Reply #1 on: July 24, 2015, 03:56:10 pm »
Thanks for sharing your fix with us.  :-+

An alternative to buying a new one is to DIY as per modemhead.

Just keep in mind the DIY above has its limitations and if you are working with this meter on your job with high voltage, you would be better off buying the Fluke issued part number.

Offline tibimakai

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Re: Fluke 87 Continuos Beeping Problem Fixed
« Reply #2 on: July 28, 2015, 07:14:20 pm »
I had the same thing with a Fluke 189, picked it up from craigslist for $140. Excellent condition otherwise.
Un-soldered the receptacles and measured them. The amp ones, were showing a short. I have left it overnight in IPA, next morning they did not have short at all.
Soldered it back in and no more beeping.

Offline bluey

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Re: Fluke 87 Continuos Beeping Problem Fixed
« Reply #3 on: March 04, 2018, 05:56:35 am »
My Fluke 87 started beeping when I tried to use it again after leaving it sitting under the house on an aircon external unit hot and vibrating.

Solder joints look fine. Small amount of debris in the receptacles. Probably just enough in the groove in the bottom corner to short the halves of the terminals. A good look with a lighted magnifier helps. Repeated cleaning with alcohol soaked q-tips until properly clean fixed mine.

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