Author Topic: Fluke 77 (Series 1?) needs new rotary dial  (Read 1979 times)

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Offline hypercoffeedudeTopic starter

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Fluke 77 (Series 1?) needs new rotary dial
« on: December 30, 2021, 03:34:52 am »
Hello everyone, I managed to get ahold of an older Fluke 77 multimeter from an estate sale for $10. It turned on and worked, but when I moved the knob back and forth a few times the plastic portion of the rotary switch fell apart (likely due to old age). I need help locating a replacement rotary switch. I can provide photos of my unit if that would be helpful. However, for now I will just include a photo of a similar unit I found here which has a view of the same rotary switch in working condition.

Fluke 77 Multimeter
John Fluke MFG. Co. INC.
Everett, Washington
Made in USA Patents Pending
Serial No: 40531228

« Last Edit: December 30, 2021, 03:41:50 am by hypercoffeedude »
 

Offline bdunham7

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Re: Fluke 77 (Series 1?) needs new rotary dial
« Reply #1 on: December 30, 2021, 04:10:45 am »
You need Fluke p/n 642918.  You aren't likely to find one very easily, but at least you start with a part number.  You are more likely to find a parts unit than to luck into a new switch.  Any 73/75/77 original series meter has that switch, but other 20-series models might as well. 
A 3.5 digit 4.5 digit 5 digit 5.5 digit 6.5 digit 7.5 digit DMM is good enough for most people.
 
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Offline El Rubio

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Re: Fluke 77 (Series 1?) needs new rotary dial
« Reply #2 on: February 22, 2022, 06:03:04 pm »
Are you still looking for the dial? I have a broken 77 ( series ii, i think), but the dial is in good shape.
 

Offline abdulbadii

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Re: Fluke 77 (Series 1?) needs new rotary dial
« Reply #3 on: February 23, 2022, 01:03:23 pm »
have 3D printing creating one
 

Offline Shock

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Re: Fluke 77 (Series 1?) needs new rotary dial
« Reply #4 on: February 23, 2022, 04:09:08 pm »
Hope these all don't fail. :/
Soldering/Rework: Pace ADS200, Pace MBT350
Multimeters: Fluke 189, 87V, 117, 112   >>> WANTED STUFF <<<
Oszilloskopen: Lecroy 9314, Phillips PM3065, Tektronix 2215a, 314
 

Offline mqsaharan

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Re: Fluke 77 (Series 1?) needs new rotary dial
« Reply #5 on: February 24, 2022, 05:39:24 am »
Are you still looking for the dial? I have a broken 77 ( series ii, i think), but the dial is in good shape.

Hi El Rubio,
My Fluke 77 (Series I) dial is also worn out. It doesn't even click in place anymore. So, I would like to buy it from you. Would you like me to send you a PM?
 

Offline enrlaz

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Re: Fluke 77 (Series 1?) needs new rotary dial
« Reply #6 on: March 25, 2023, 06:42:08 pm »
Hi
i have the same problem with the rotary switch p/n 642918 like hypercoffeedude.
I need used one cause fluke do not have any part number since 2007.
This multimeter has a sentimental value for me.
How someone solved?

Thanks
Enrico - Pisa - ITALY
 

Offline Shock

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Re: Fluke 77 (Series 1?) needs new rotary dial
« Reply #7 on: March 26, 2023, 06:26:50 am »
Determine if you have series I or II and check from the manual if the Fluke 77 and 75 has the same switch or parts as it may be less expensive to source. Here is a couple of possibilities but check first.

https://www.ebay.com/itm/134505634489
https://www.ebay.com/itm/256018754951
Soldering/Rework: Pace ADS200, Pace MBT350
Multimeters: Fluke 189, 87V, 117, 112   >>> WANTED STUFF <<<
Oszilloskopen: Lecroy 9314, Phillips PM3065, Tektronix 2215a, 314
 


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