Fluke 87 repair. - Page 1
Forum section: electronics / repair

author: aargee
author_rank: Frequent Contributor
timestamp: December 01, 2013, 10:55:06 am
content: Hi all,I was wondering if anyone knows where to buy the input jacks (Fluke 826214) at a reasonable price here in Aus?The solder tags on this one seems to be un-recoverable, just need this and the 1500V E1 MOV to get the meter back together again.- Rob.

author: poida_pie
author_rank: Regular Contributor
timestamp: December 01, 2013, 11:06:20 am
content: http://www.ebay.com/itm/Fluke-87-4-89-4-187-189-Input-Jack-Receptacle-New-FREE-S-H-/281207280096?pt=LH_DefaultDomain_0&hash=item41794291e0$31 US plus expensive postage at $25 to AUS.Free shipping to US locations.

author: aargee
author_rank: Frequent Contributor
timestamp: December 01, 2013, 11:29:38 am
content: Yes, thanks, I've seen the ebay offerings, I was hoping for something a little closer to home.

author: retiredcaps
author_rank: Super Contributor
timestamp: December 02, 2013, 07:34:59 am
content: I'll send modemhead a PM to see if he has ideas.

author: ModemHead
author_rank: Frequent Contributor
timestamp: December 02, 2013, 02:54:46 pm
content: 3/16-inch OD K&S brass tubing happens to make wonderful DIY banana jacks. Given my fix-it-or-die mentality, I'd be inclined to get out the Proxxon (Dremel-type tool) and some epoxy to set a new tube in place. But there could easily be safety issues with such a repair. If your time is valuable and you don't enjoy this sort of tedious work, a new assembly is the way to go. Might be worth a call to Fluke Service to see if they can send one cheaper than the eBay price.

author: Vuk
author_rank: Newbie
timestamp: December 03, 2013, 12:01:58 am
content: info@celemetrix.com.auCelemetrix is Authorised Fluke Service centre in Australia.Email and ask for price.

author: aargee
author_rank: Frequent Contributor
timestamp: December 26, 2013, 09:10:07 pm
content: My Fluke 87 III is now fixed and working!The fault was "continuous beeping" which turned out to be the "you've left probes plugged into the current socket and you're now in V/Ohm" alarm. The Fluke uses split conductor input receptacles the sense the banana plug is inserted and this was faulty.There are a few other little issues - the display clips are broken on one side but once the meter is back together, the pressure keeps the display working a treat and the Capacitance range seems a bit off - but everything else checks out in comparison to my Flukes from work.Just a big thanks to VUK for his assistance in getting parts and for Celemetrix for being local and able to supply them at a better price than anywhere. Also thanks to ModemHead for his interesting and useful website.

author: calexanian
author_rank: Super Contributor
timestamp: December 27, 2013, 03:53:54 am
content: Did you buy that fluke brand new? Or used? They should have a lifetime warranty.

author: aargee
author_rank: Frequent Contributor
timestamp: December 27, 2013, 06:46:58 am
content: It was given to me in a rather abused condition. I doubt it would be covered by any lifetime warranty given it's treatment.

author: retiredcaps
author_rank: Super Contributor
timestamp: December 27, 2013, 06:51:58 am
content: Quote from: calexanian on December 27, 2013, 03:53:54 amLifetime is a marketing term. From the 87 III user manual ...

author: calexanian
author_rank: Super Contributor
timestamp: December 27, 2013, 07:02:18 am
content: A guaranty as valuable as the paper its printed on I see.. Oh well.. I will still continue to buy their meters every 20 years or so!

author: retiredcaps
author_rank: Super Contributor
timestamp: December 30, 2013, 11:37:53 pm
content: Quote from: aargee on December 26, 2013, 09:10:07 pmSince you got this meter in abused condition, I suggest checking your PTC (RT1). It should read around 1.5 kohm *.The service manual for the 87 I (original) shows the signal flow (figure 5-7) for the capacitance measurement and it goes through R1 and RT1. R1 is a 1 kohm fusible resistor and is likely okay.http://assets.fluke.com/manuals/83_85_87smeng0500.pdfAlso make sure to check low range resistors like 100 ohms. I thought I had an used working 77 III until I checked a 100 ohm resistor and found it fluctuating. My PTC measured 110 kohms instead of 1 kohm. Once I replaced the PTC, the 100 ohm reading was stable and perfect.Robomeds had a similar problem with the 87V as perhttps://www.eevblog.com/forum/testgear/fluke-87-v-mystery-low-impedance-input/* PS. For the 87V, the PTC is around 1 kohm. For the III, I'm not 100% sure, but it should be either 1.5 kohm or 1.0 kohm. If it is something like 4 kohm, then it is obviously bad.

author: retiredcaps
author_rank: Super Contributor
timestamp: January 22, 2014, 11:14:10 pm
content: Quote from: ModemHead on December 02, 2013, 02:54:46 pmDocumented with pictures and details athttp://mrmodemhead.com/blog/fluke-80-series-jack-assembly-rebuild/