TA-0329: Fluke Friday (E8) Fluke 21 23 and 70 73 75 77 79 type 1,2,3

[@uni-byte]

Thanks Tony. If I'm not mistaken the 70 series and the smaller 20 series were intended to be "everyone's" Fluke. Something anyone could afford as they were offered at prices about 1/4 of the older 8000 series handhelds. kind of like the Chinese built 10 series of today. Would you agree?

[@TonyAlbus]

The 25 and 27 were indeed big and even militairy used, very very strong. The 7x, 21 and 23 are the smaller ones.

[@michaelcranstoun8296]

What's the difference between the 23 and 77? (Other than color)

[@TonyAlbus]

@@michaelcranstoun8296 Nope, its just That , i have even added a specs download in the description to better compare

[@michaelcranstoun8296]

​@@TonyAlbusThanks Tony. I bought a refurbished 23 and love it. It was calibrated with a 287, and works 100% The display is great. I have an 87V, and keep the 23 for backup.

[@TonyAlbus]

@@michaelcranstoun8296 Cool nice find!

[@Chris_Grossman]

a new soft red pencil eraser works great to clean contacts on a pcb. It is just abrasive enough. You then need to blow it off and clean with ipa. Ipa alone does not remove the oxidation.

[@TonyAlbus]

Thanks, good one!

[@johnwest7993]

Many years ago I got the pawn-shop purchase price of my first Fluke meter, an 8800 cut down from $120 to $60 when I had it at the sales counter to plug in and check out. I draped one of the leads over the AC cord and set the range on the lowest VAC. Then I pointed out to the person at the counter that the numbers on the display were jumping around erratically even though the probes weren't connected to anything. So I told them I'd offer $60 for it and try to fix it myself. They sold it to me for that amount. I found the repair to be fairly easy. :)

[@TonyAlbus]

LOL, clearly they had no idea what they were selling, nice catch!.

[@M22Research]

So you dishonestly took advantage of the seller, effectively stealing the purchase. And proud enough of it to actually publicly post the story!?!

[@sbelectronicaindustrial6652]

Hello Tony, we continue with the entire Fluke fleet, very good... Greetings...!!👍👍

[@TonyAlbus]

Thank you!

[@rhyoliteaquacade]

Thanks! Just got a Fluke 73-III gifted to me by my BIL after helping him with some wiring and commenting on that I was jonesing for a FLUKE. His looked pretty awful having been used in a transportation garage and had grease on the yellow guard and probes. The guard cleaned up pretty well and the unit itself works and looks great, now new battery to replace 10 year old one. Overall the meter is like new apart from the LCD which has an oval burn in the LCD polarizer. I think from sun, perhaps left on dashboard of the service truck. I am planning to buy a new LCD and would prefer an OEM Hitachi one, but wonder if the Chinese ones are any good?

[@TonyAlbus]

No promblems from the aliExpress onces... or ebay.. its fine.

[@AstonsVintageTechnologyWorkshp]

Hi Tony, bit of a Fluke fan too. I have a 10, 73, 75, 79, 83V and a 87v3 plus some side button ones somewhere. They are just so reliable. Cheers, Ast...

[@TonyAlbus]

Hi Aston!. Nice collection you have! yes agree very reliable! you have a sub too :)

[@ssalient]

I know, 3rd comment; The dim/faded display is most likely due to a worn polarizer. If you want to fix this, you will have to remove the silver back of the display and beneath that is the polarization layer that should also be removed. Then you will need new polarizer foil (can be bought on amazon for instance), cut it exactly to the right dimensions (also mind the orientation, this is VERY important) and use something like alumium foil as the silver back replacement.

[@TonyAlbus]

Thanks Marnix, yes worth a try for sure!

[@M5AXA]

Nice one Tony, I still have to catch up with last weeks. You clearly worked hard on this weeks video with 54 minutes. I will come back with a prober review once I wave completed watching both. 😁

[@TonyAlbus]

Thank you Ian. yes long one this time.

[@TheFelix63]

where these multimeters have the buzzer, I don't see it, Maybe it's the one on the top left? In this case 73 also has it, no, I stand corrected, the one on the top left is the screw to adjust the precision, so where is the buzzer?

[@TonyAlbus]

Not all multimeters have a buzzer, but i dont remember, maybe i open them in de video and you can see.

[@mybobbleheads]

I have a yellow Fluke 21 with only 3 sockets and the amp is shown as 300mA. Does that mean I cannot measure over 300mA? I hooked it up to my 20 watt solar panel and it read close to 300mA at battery input. I was expecting approx 1 amp.. I have had it since the 80's

[@TonyAlbus]

Yes the 21 can only do mA upto 300mA

[@Stephen_Heathcote]

Excellent! I have to ask though, how many Fluke meters do you have now??

[@TonyAlbus]

Thanks Stephen, i decided only to count my blessings :)

[@johnwest7993]

It just occurred to me that I have 5 or 6 or 7 (or more,) Fluke meters, from small handhelds to bench meters, all of various colors. Plus I has a Fluke refrigerator magnet. :) The funny thing is that I'm not even a collector. I'm just an old tech who doesn't walk past a good Fluke at a good price. New Fluke motto: "If it works, it's a Fluke!" BTW, I don't know why I sit here watching you fix broken Flukes when I have broken Flukes of my own to fix. :)

[@TonyAlbus]

LOL.. thanks John.. yes can't let go a good deal. and it is usualy a save buy. have fun watching and fixing your own meters.

[@aimbuster1]

my question is. Can those old Multimeter handle RMS ?

[@TonyAlbus]

By default this series has no tRMS. but there are a few FM versions, they have the FM suffix .. those do something that is almost RMS.

[@renepc2c937]

If you have to drive screws in (older, damaged) plastic, I like to put a thin layer of petroleum jelly on the screws. That runs a lot smoother

[@TonyAlbus]

Thanks Rene, good top!.

[@jspencerg]

My 75 has no 10A fuse. One can see the cut in the capacitor for over voltage protection. Unit has been working fine since 1986 and stays on the table.

[@TonyAlbus]

Yes its some good quality

[@ssalient]

On my work we have a 26 III actually. I believe it's virtually the same as the 177.

[@TonyAlbus]

Thanks, nice info!

[@jonathanquinlivan6911]

I think the AN and BN were military contracts

[@TonyAlbus]

Thanks!

[@joseabrahaoabrahao7937]

hello Tony. I'm trying to service my analog multimeters, but they're old and I'm not getting components to replace. can you tell me where you buy special components like diodes, resistors? thanks.

[@TonyAlbus]

Hi Jose, we have here companies like Farnell or Mouser that sell components, if it is real old, maybe look on ebay but becarefull for fakes, and if older, you need to find a second device for parts.

[@ssalient]

Also, Fluke likes to make things confusing I guess, there are differences between the same model numbers; I have seen 75's or 77's that have UNFUSED and FUSED current inputs, at least on the front lettering.

[@TonyAlbus]

Yes many types within the type and revisions. hard to find 2 exacly the same :)

[@aehabazataf5819]

I like UNI-T company, good price and good accuracy for home use.

[@TonyAlbus]

Yes agree also nice meters for a nice price.

[@davidpotter9462]

I have a 21 but it's yellow not gray.

[@TonyAlbus]

interesting, thanks.

[@laetlaet6130]

اتبيع fluke 77

[@TonyAlbus]

Nice!

[@zdzisiek1979]

👍

[@TonyAlbus]

Thank you!