Products > Test Equipment
Old Fluke Multimeters
rsjsouza:
Interesting that everything else was intact and, looking at the wire, it seems indeed original. If you have bought this used, there is a chance it might have been replaced before without your knowledge. Well, that or the capacitor itself was a bad part mounted in factory where a minute corrosion was present and became noticeable only after decades. At this point all is a guess.
Regarding the cracked capacitor, I also have seen this happen when corrosion in the leads is severe: the leads become so corroded that it weakened the ceramic and it cracked at the slightest touch. But in the cases I have seen, the corrosion was clearly an outside job (humidity, electrolytes, etc.)
Well, it is good that you found the issue before extensive PCB damage happened. These meters are sturdy as they come.
Fungus:
Now I'm all worried about mine again.
I still haven't got around to recapping them.
cocosteel:
Hi everyone,
I think I have found here the greatest resources for servicing vintage Fluke DMMs, thank thanks to all contributors.
I have read almost the whole topic regarding the 8060a model and now I would go for a re-cap of my mine, as per DrTaylor's valued explanations here as well as Mr.ModemHead's blog.
I'll order soon all replacement capacitors according to the list published by DrTaylor's some years ago : https://www.eevblog.com/forum/testgear/old-fluke-multimeters/?action=dlattach;attach=344836;image
All is great for all polymer capacitors, but unfortunately for recapping C36, the advised reference is from the Nichicon UTT family which is now obsolete.
Even if major retailers still have some stock to deplete, I wonder if it would be a good idea to find a replacement reference in current production. Could you help me to choose it, please ?
Aluminium electrolytic ; 22 µF/16V ; 105°C 5000hr ; Ø5mmx8mm for the main characterics ... but I'm just unable to think about others specs like ripple current, impedance etc.
The small UTT form factor seems difficult to meet, and the Nichicon's advised subsitute 63YXF22MEFCT16.3X11 is oversized.
Many thanks for your help.
scopeman:
How about Panasonic's OSCON Organic Aluminum Caps. Very low ESR. I have used them in high volume production with very good results. No failures or issues in 10 years of service in an industrial environment.
Sam
W3OHM
rsjsouza:
If you want to stay on Polymer, I can attest the Panasonic OSCON capacitors are good as well, although it is hard to find the exact diameter - all 22µF I found are 6,3mm (Panasonic SEPF), as well as from Kemet A758 and Wurth (also good brands)
If diameter is the hard requirement, Kemet A759 meets the 5mm, although it is much taller.
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