Products > Test Equipment
Old Fluke Multimeters
kalel:
Being a newbie to electronics (have not had a chance to own or repair many old things), I wonder if you changed all of the capacitors on a device that has many, and went with high quality branded replacements, would it be costly comparing to the device itself?
Then, probably some things like potentiometers cost even more if you go for high quality.
Of course, for professional restorations or service repair this is different, as they either want the thing in perfect condition for a collection or charge for their work and parts.
Fungus:
--- Quote from: drtaylor on August 11, 2017, 04:06:41 pm ---
--- Quote from: Fungus on August 11, 2017, 03:56:12 pm ---I took it apart to find a date code, etc. I got PCB revision J, date on main chip is week 30, 1989.
As far as I can tell the capacitors aren't Nichicon and look suitably numerous and very fiddly to replace. :( I'm going to leave that job for now.
--- End quote ---
Hi Fungus, Sounds like you got a good one.
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:-)
--- Quote from: drtaylor on August 11, 2017, 04:06:41 pm ---Rev J was done after I left Fluke. Really makes me want to see the Rev History. As I mentioned earlier, I have mostly PCB Rev H and PCA Rev H. Rev J would be one revision newer as Fluke and most companies skip "I" due to possibility of confusion with "1".
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I could take some pics of the PCB, etc., if you think that would help. I imagine most changes would be to reduce costs though, not to change functionality.
--- Quote from: drtaylor on August 11, 2017, 04:06:41 pm ---If you don't replace the Caps, you could be in for trouble later. I'd use a magnifier and look carefully around the bottoms of all the Alum Caps for any signs of electrolyte leakage (but it may be there anyway and you won't see it). Your caps are >20 years old. But if it works...
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Coming up to 30 years old...
I'll inspect them and look into replacing them when I get the chance. I want to put it through its paces first.
helius:
--- Quote from: kalel on August 11, 2017, 04:17:39 pm ---Being a newbie to electronics (have not had a chance to own or repair many old things), I wonder if you changed all of the capacitors on a device that has many, and went with high quality branded replacements, would it be costly comparing to the device itself?
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It depends on what types of capacitors were specified. Radial aluminum electrolytics of high quality are not expensive. From 20 cents for 10 uF to a couple dollars for 1000 uF in small quantities. The axial and screw-mount types are more expensive, and locating extra low leakage parts can be a challenge. Wet tantalum capacitors are outrageously expensive (found in Tektronix gear, not only military equipment).
--- Quote ---Then, probably some things like potentiometers cost even more if you go for high quality.
--- End quote ---
Again, it depends on the type. Cermet trimmers (for calibration, unaccessible with the case closed) of high quality are less than a dollar each for most ranges. On the other hand, 10-turn geared potentiometers are fairly expensive.
Fungus:
I like all the 8060A power-on self tests for the switches and buttons, etc. :)
8V output in diode test mode. :)
It's smaller than I expected. :) :)
One of the little black rubber feet underneath is turning to goo and came off (stuck to the table). >:(
Electro Detective:
--- Quote from: Fungus on August 11, 2017, 06:43:10 pm ---I like all the 8060A power-on self tests for the switches and buttons, etc. :)
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If it 'ever' fails on the power up due to a measuring mishap/blunder, try restarting,
or if no go pull the battery, work all the switches and power switch, refit battery and try again.
This has happened to me twice, and it wasn't the meter's fault.. I had the wrong setting/overconfidentnewbsyndrome |O
--- Quote from: Fungus on August 11, 2017, 06:43:10 pm ---8V output in diode test mode. :)
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With the right LED stuck to the side of the meter, probe up a handy torch light when the zombies cut the lab power ;D
--- Quote from: Fungus on August 11, 2017, 06:43:10 pm ---One of the little black rubber feet underneath is turning to goo and came off (stuck to the table). >:(
--- End quote ---
Love at first sight :-* the meter wants to stay :clap:
--- Quote from: Fungus on August 11, 2017, 06:43:10 pm ---It's smaller than I expected. :) :)
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Pimp it up ! 8) see my DIY below :-DMM
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