Products > Test Equipment

Fluke 189 with leaking surface mount supercap (also Fluke 287, Fluke 289)

<< < (57/64) > >>

coromonadalix:
@ sotos   

My 189 worked pretty well without the supercap, I did not use any time logging feature and or set a clock

I wont say for the 289 series,  apparently there may be an real battery instead of an supercap ??  Some teardown photos showed that.

say:
Could you please post a link of those photos.

joeqsmith:
I was working with a friend that has a 189 a month ago.   I went to use his meter and it was dead.  He had just put fresh batteries in.  With permission, I took it apart and sure enough the cap was going bad.  No need to discharge it, it was flat.   These meters are getting old.

Electro Detective:
I'm still sitting on the fence about removing the stupercrapacitors on the 189 and 289  :-[

I would prefer to remove the caps and leave a blank space there,
but without killing the meter/s and or affecting their logging functions

or have the charger circuit/firmware/software go nuts with "Dude, where's my cap?!!"   ???


Reset of the clock on battery changes is a trivial matter compared to having leak prone caps and coin batteries lurking in there

Both meters working great, I really don't want to kill em
 

Would an electrically isolated soldering iron or station with a wee tiny tip be ok to get this done?
or should the iron be earth/ground referenced?

I don't want to mess with hot air, nor do I wish to encourage any ESD zaps during a simple heat and remove operation

i.e. I want them GONE without the    'SOL-Game Over'    thing flashing on the meter display 

coromonadalix:
i've done the supercap change on a anti static bench mat, with an normally earth grounded  hakko soldering post, nothing fancy, if you're not so sure, discharge the supercap with an 100 ohms resistor ...


For the supposed battery in a 287 289   link : https://www.eevblog.com/forum/testgear/fluke-189-with-leaking-surface-mount-coin-cell/225/

On the pcb it is marked BT1  :  https://www.eevblog.com/forum/testgear/fluke-189-with-leaking-surface-mount-coin-cell/?action=dlattach;attach=311290;image

My 189 had c xxx marked on the pcb,  the confusion would be : it is a supercap used as a small battery ??

Navigation

[0] Message Index

[#] Next page

[*] Previous page

There was an error while thanking
Thanking...
Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod