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Electronics => Repair => Topic started by: ELCouz on September 25, 2018, 09:50:34 pm

Title: Fluke 289 super capacitor
Post by: ELCouz on September 25, 2018, 09:50:34 pm
Hi,

I am out of warranty for the Fluke 289 and I need to replace the super cap which of course is leaking.

Any part # or equivalent specs for a better than the OEM Panasonic one?

Thank you very much!
Laurent
Title: Re: Fluke 289 super capacitor
Post by: dacman on September 25, 2018, 10:35:59 pm
There are lots of threads on that.  Just search for 289 Super Capacitor.
Title: Re: Fluke 289 super capacitor
Post by: coromonadalix on September 25, 2018, 10:52:47 pm
Rebuilt my Flukes 189 with theses  :
https://www.digikey.com/product-detail/en/elna-america/DX-5R5H104U/604-1022-ND/970183 (https://www.digikey.com/product-detail/en/elna-america/DX-5R5H104U/604-1022-ND/970183)     100mf or 0.1 farad
https://www.digikey.com/product-detail/en/elna-america/DX-5R5H334U/604-1024-ND/970185 (https://www.digikey.com/product-detail/en/elna-america/DX-5R5H334U/604-1024-ND/970185)     330mf or 0.33 farad


I used the 5.5volts super cap, with a slight pins bending they fit perfectly ....  be careful of the polarity, there an small "-"   (minus sign) on the top  and check on the pcb  before removing the ''old'' part, dont over heat the pcb traces, and do an proper board cleaning after.
Title: Re: Fluke 289 super capacitor
Post by: joeqsmith on September 25, 2018, 11:01:14 pm
I'm using a similar part.

https://youtu.be/8t8nkCbYJVc?t=17
Title: Re: Fluke 289 super capacitor
Post by: Fabry_85 on January 30, 2019, 11:20:39 am
HELLO boys!
I need your help. :'( :'( :'(
I have the tester 289 that as I turn on gives me an "incorrectly connected cables."
Could it be the super capacitor?
it is damaged. the fluke is 289 and of the year 2008.
I found on ebay a PANASONIC GOLDCAP KONDENSATOR Capacitor 0,22F 3,6V 10x5MM[/img].
You can help me?
Thank you.
Title: Re: Fluke 289 super capacitor
Post by: coromonadalix on January 30, 2019, 06:16:08 pm
If i recall you have optocouplers for the leads detection
Title: Re: Fluke 289 super capacitor
Post by: ElecSeb on January 30, 2019, 06:49:09 pm
Quote from: coromonadalix on January 30, 2019, 06:16:08 pm
If i recall you have optocouplers for the leads detection

Correct  :-+
Title: Re: Fluke 289 super capacitor
Post by: mr.fabe on January 30, 2019, 09:18:14 pm
Not sure if this is the correct part but you can check it out...

https://www.ebay.com/itm/Fluke-Multimeter-289-fix-for-Warning-Leads-Connected-Incorrectly/222887522548?hash=item33e521b0f4:g:-n8AAOSwgBNarXQ3:rk:1:pf:1 (https://www.ebay.com/itm/Fluke-Multimeter-289-fix-for-Warning-Leads-Connected-Incorrectly/222887522548?hash=item33e521b0f4:g:-n8AAOSwgBNarXQ3:rk:1:pf:1)
Title: Re: Fluke 289 super capacitor
Post by: Fabry_85 on January 30, 2019, 09:20:25 pm
Can you please tell me exactly wich optocoupler is damaged? I do not have a schematic.
At first it happened sometimes in cold and wet environments. Now it always has this bad behavior.
Can I find the same octocoupler ? Do I need to replace it with a compatible one?

Thank you
Title: Re: Fluke 289 super capacitor
Post by: Fabry_85 on January 30, 2019, 09:26:25 pm
You're right. Where can I find it in Europe or Italy?
Anything compatible?
Title: Re: Fluke 289 super capacitor
Post by: 2N3055 on January 30, 2019, 10:06:14 pm
It is a known problem .

See here :

https://www.eevblog.com/forum/reviews/fluke-287-input-alert-diode-type-replacement/msg683654/#msg683654 (https://www.eevblog.com/forum/reviews/fluke-287-input-alert-diode-type-replacement/msg683654/#msg683654)

https://www.eevblog.com/forum/beginners/my-fluke-289-displays-_warning-leads-connected-incorrectly_-after-the-case-open/msg735239/#msg735239 (https://www.eevblog.com/forum/beginners/my-fluke-289-displays-_warning-leads-connected-incorrectly_-after-the-case-open/msg735239/#msg735239)

You are missing IR LED diode. If you lost it you will need to buy new one and solder it in.
Title: Re: Fluke 289 super capacitor
Post by: Fabry_85 on February 03, 2019, 01:37:20 pm
the Ds2 must be welded like this?(https://uploads.tapatalk-cdn.com/20190203/f5b9d82d586ed162d581157ad70ff3f3.jpg)

Inviato dal mio FRD-L09 utilizzando Tapatalk

Title: Re: Fluke 289 super capacitor
Post by: ElecSeb on February 03, 2019, 02:14:35 pm
That is upside down!!
Title: Re: Fluke 289 super capacitor
Post by: Fabry_85 on February 03, 2019, 05:52:54 pm
Quote from: ElecSeb on February 03, 2019, 02:14:35 pm
That is upside down!!
Ok! thanks.

Inviato dal mio FRD-L09 utilizzando Tapatalk

Title: Re: Fluke 289 super capacitor
Post by: ElecSeb on February 04, 2019, 07:19:11 am
The PCB you show looks like it has been soldered before... No by you I suppose?
Are you sure the meter is still working?

I am sorry for my bluntness, but based on your shown experience you do not seem to have that much experience in electronics...
Are you sure you are capable to make this repair and would it not be wiser to put this one with a correct description on ebay and buy yourself a working new one (calibrated and within spec?)
Title: Re: Fluke 289 super capacitor
Post by: marrob50hz on July 18, 2024, 11:15:32 am
Hello,

I found a perfect replacement for C145 supercap
Mfr. No:ELNA RSCSK2043R3D01004T
https://eu.mouser.com/ProductDetail/Elna/RSCSK2043R3D01004T?qs=4ASt3YYao0W6joWWDTvrLg%3D%3D