Picked up this multimeter known to be not working
Had no display whatsoever
Hoped it was a dead battery :tu:
Opened it up. No battery :tu:
Installed new battery....only display on certain modes. :grr
Checked internal $30 fuse. Open :grr
Installed new fuse. Fingers crossed. No change :grr
Connected mini-grabbers and 150 ohm resistor
Continuity mode. Nothing
IMG_20251115_195152776.jpg
200 ohm range
Working
IMG_20251115_195146417.jpg
2000 ohm range
Working
IMG_20251115_195138167.jpg
20,000 ohm range
Working
IMG_20251115_195130844.jpg
200 kohm range
Back to nothing :grr
IMG_20251115_195123150.jpg
Not really equipped to diagnose or repair tiny surface mount stuff.
:'(
I would see if you can verify switch contacts for bad ranges/functions.
Quote from: g1 on November 16, 2025, 10:46:16 AMI would see if you can verify switch contacts for bad ranges/functions.
Agree with G1. I had a similar issue to a meter. The dial is connected to a circular metallic gizmo that turns and makes connections to points on a circuit board. That metallic gizmo was dirty and had slightly deformed. So I bent it here, bent it there, reassembled and voila, the meter and functions came back to life. Make sure you also use some spray cleaner on all contacts and pots.
Thanks guys I appreciate it and like anything I'm working on it's not a big deal but at the same time I don't take your help lightly :dbtu:
Anyhow I did some more disassembly and didn't really find any 🚭 smoking 🚬 guns
IMG_20251117_172040678.jpg
IMG_20251117_172045375.jpg
Which was a good thing I guess but still at square one.
So I put it all back together and no change :grr
Meanwhile I really wanted to get the full size circuit board out so I was like dude just take it apart again and keep going :grr
So I noticed I would not be able to get the full size board out with the contact selector wheel in place but I didn't know how to get it off. So I tugged gently on the front of the meter and no go. :grr
Then I pulled from the backside and wow :loco xP :'( :lmao: :tu:
IMG_20251117_175756948.jpg
Houston we have a problem :trouble
IMG_20251117_175813181.jpg
IMG_20251117_175827047.jpg
I do not know what happened I had suspected it had gotten wet. Or ended up in the drink idk 🚢⛵
But now that I look at it I wonder if that is burn marks :grr
I could clean it up but as you can see one of those copper pieces is all mangled.
Anyhow thanks guys that was definitely interesting :dbtu:
I cleaned everything up real good and removed that mangled contact
I figured I would hopefully gain a few more functions but NO :grr
Now it has less functions I lost the low resistance range.
Yes I know that piece 🧩 is necessary but I think it's more necessary than I thought
IMG_20251117_184055455 (1).jpg
So now I have to try to find a replacement piece or fab something up (yeah right :lmao: xP :loco )
Or just send it to the factory for service :'(
But yeah you guys nailed it for sure :lmao:
Thanks again
Does the board clean up where those contacts meet? It looks like some of the traces may be ground down. If not, and the board is ok, you should be able to buy that actuator wheel with the contacts attached.
If you have to send it away for repair, it's probably going to cost at least $70.
I would consider keeping it for parts and buying this one, might not be too far from you: (edit: sorry, it's an auction, I thought it was a 'buy-it-now' price)
https://www.ebay.com/itm/227084616674?_skw=amprobe+hd110c&epid=1401844557&itmmeta=01KABSCH8FV8H5NMRKW0FWRWTP&hash=item34df4c43e2%3Ag%3A9psAAeSwmxpo2-1j&itmprp=enc%3AAQAKAAAA8FkggFvd1GGDu0w3yXCmi1fnRUmUcS3P%2BdQVruKeAwKNzlynRv5iNhKZfi%2Fqv3oeIPbqBoYLSxEM6YMVaGNE9kiQQgNTLImEEL62%2Bo8Y6SVG1%2BvXxGObZ4puIEBVCXvYe%2FtFUGp%2BExS82xkqVkfUqPzbAbeURINJ2gnkj1WPqBNayoGuuPjJVeioUOqED9H1xjmkYFJ5LBL%2Fkos24Z5bgfrqKTQ3pqDP%2BRadlutJALTKe3HpQz%2BDhxjnD3SEoBBR08HIXnh4wYZPZKgQIXPdhzNE%2FrnhsNR%2B3x%2BQsqkGWYoidhLoVyTe7oxTO7HCzF6b2w%3D%3D%7Ctkp%3ABk9SR66UsvnSZg&LH_All=1
Thanks the MIGHTY G1 :dbtu:
I'm content at this point to remove the actuator wheel from a working unit I have two or even rob one of the little copper strips and see if it restores full function.
I spent $40 on this one which was pretty stupid but hey I learned my lesson trying to second guess complete strangers. xP
It would have been nice to get a working FP 700 fuse out of it but oh well.
Limited reading other forums and stuff tells me they (Amprobe) are now owned by fluke and parts aren't really available.
So I'm content to try the actuator wheel transplant and see if it comes to life.
The fuse isn't a big deal the meter is supposed to work without just can't measure current.
Oh sorry forgot to mention the contacts on the board cleaned up very nicely with a swab and some isopropyl alcohol so there's that
But as you know there may be some damaged components. And at that point all hope is lost but even then I must continue to trudge forward ⏩ and that would be near impossible but I do have some thermo tweezers now.
Hey anybody do you think that damage is from water or arcing/high voltage ⚡
Response from PUKE after sending inquiry to info@amprobe.com
Hi Wesley,
Thank you for reaching out. Unfortunately, PUKE does not support service or replacement parts for Amprobe items. I would recommend exploring online parts warehouses or other websites that may have the parts you need. Additionally, checking with rental companies could be helpful, as they sometimes have parts available.
I hope this information is somewhat helpful to you. Please feel free to reach out if you have any other questions.
Wishing you a wonderful day!
Fluke Customer Care
fluke-info@fluke.com
800.443.5853
Looks like some people make their own:
https://softsolder.com/2012/09/20/multimeter-range-switch-contacts-whoops/
Oh well I guess we are done here :tu: :lmao:
I took a good selector wheel out of a working unit and only gained high voltage ⚡
Only that and a couple low resistance readings show up
IMG_20251119_175554886.jpg
IMG_20251119_180225816.jpg
So that should wrap this one up
Anyhow if anyone is interested they call those little contacts "multimeter shrapnel" and some are available
Peace out :dbtu:
Save it for parts. My Beckman 310 was about 40 yrs. old when I finally dropped something on it and broke the case. I had a parts unit that was nearly as old and it finally paid off. :)
I hear ya yeah I'm walking away from the table cutting my losses 8|
Man I sure do like that white face on the broken one <3)
Little did I know more excitement was on tap after my little test :grr
Oh yeah went to put the good selector wheel back in the good meter and one of the copper contacts came off :grr
I gently put it back with tweezers and knock on wood all good now :grr :lmao:
xP
That's pretty bad ass that you accomplished so much with that one plain Jane meter :dbtu:
There is definitely a big lesson for me to learn here :trouble
Sorry for another question did you or do you still have special instances where an analog meter is required?
Analog meters are useful when trying to observe a trend in the reading.
A digital meter may try to seek the result whereas an analog meter needle will show it.
Yes sir thanks btw HAPPY HOLIDAYS :tu: