iFixit - Active Questions With Device "Multimeter"

iFixit Digital Multimeter: xmas light buld testing

Wed, 11 Mar 2026 16:33:18 -0700

Can the meter be used to test for a bad xmas light in a string of lights?

⟐ Answered March 11, 2026 at 16:33 MST

Multimeter: Is there anything materially different about this 115?

Fri, 23 Jan 2026 12:19:42 -0700

For context, this is listed as a FLUKE-115/LT meter. I also noticed the UPC and model is different from the retail version (Retail SKU: 095969324182/FLUKE-115). For example when I lokup the retail 115 UPC, this is what I see: https://www.barcodelookup.com/0959693241...

Now, likewise, when I search for this 115/LT, this is what I get: Barcode Doesn't Exist in Our Database

As best I can tell, this is likely a standard 115, branded by the school as a theft deterrent, purchased in bulk. It's that or they were supplied as part of the tuition or school surplus. I know if it is surplus, it is probably due for calibration because some red tape says it has to be done, but due to the cost of the "student meters" they replace them and surplus the old ones out.

Based on everything I see here, there's no difference from my retail 115 - it's just gently used as a classroom meter, OR it was briefly used by a student who left the trade/upgraded.

@danj here's what the leads look like - same as a retail 115:

⟐ Answer accepted January 23, 2026 at 12:19 MST

Multimeter: Meter displays OL in voltage continuity mode with or without probes?

Mon, 19 Jan 2026 09:56:38 -0700

Quite an expensive Voltmeter device , did this from day one

OL means ‘over load’ but it isn’t even connected to anything

i suspect it is faulty but wanted to find out if anyone else has experienced this and maybe it’s simple

⟐ Commented January 19, 2026 at 9:56 MST

Multimeter: Multimeter continuous beeping in continuity mode

Sun, 04 Jan 2026 08:12:24 -0700

continuous beeping even with test leads removed.

checked battery and opened it up with no showing of corrosion or something shorting anything. Fuse still intact also did not work with high voltages.

Was checking some dead phone batteries at the time and when got back to it it kept beeping.

does not want to work in any other mode at all.

⟐ Commented January 04, 2026 at 8:12 MST

UK-830LN: Black lead has shorted how do I fix lead

Sun, 14 Dec 2025 20:14:59 -0700

Black lead has shorted how do I fix lead

⟐ Answered December 14, 2025 at 20:14 MST

MCH-108 Digital Multimeter: Is the continuity test suitable for sweeping IC pins?

Mon, 09 Jun 2025 10:54:47 -0700

Looking to buy my first multimeter. I have access to an old RadioShack multimeter that struggles with continuity, often taking a full second or more before beeping when the probes are shorted. I am looking for a multimeter for home projects and small repairs/tinkering so accuracy isn't necessarily my top concern, but responsiveness is as it will help reduce uncertainty and be more enjoyable to use.

If I quickly drag the probe across IC pins, will it:
A. Beep if a single pin is shorted to the other probe (not likely to miss a short)
B. Be reasonably noticeable to the average person. (loud beep on quick short)

I don't need it to be latching, just reasonably usable for this use case. I have used multimeters very briefly and am basically completely new to the hobby.

Multimeter: Multimeter won't stay powered up

Fri, 06 Jun 2025 11:50:48 -0700

Micronta 22-167 multimeter lcd sreen illuminates momentaritly and then fades out when press and release the "power" button

⟐ Answered June 06, 2025 at 11:50 MST

MCH-108 Digital Multimeter: Does this include the multimeter testing leads?

Wed, 28 May 2025 20:49:11 -0700

Does this include the multimeter testing leads?

⟐ Answer accepted May 28, 2025 at 20:49 MST

Fluke 77 Series III: Could somone please do a repair tutorial on the continuity buzzer

Wed, 28 May 2025 18:25:42 -0700

My Fluke doesnt beep when i measure for continutiy but unfortunatly i dont know where to start with the troubleshooting. Regards, Thomas

⟐ Answer accepted May 28, 2025 at 18:25 MST

Varo Digital Multimeter: The buzzer doesnt work

Wed, 14 May 2025 11:00:27 -0700

The buzzer does not work

Multimeter: minipa ET-2033B multimeter, turns on but doesn't measure anything

Wed, 30 Apr 2025 17:56:10 -0700

Does anyone have the ET-2033B schematic?

⟐ Commented April 30, 2025 at 17:56 MST

Multimeter: Why is my not reading voltage

Tue, 11 Feb 2025 16:58:10 -0700

Why does my Klein multi meter not reading voltage?

⟐ Commented February 11, 2025 at 16:58 MST

Multimeter: Klein tools MM700 multimeter resistance reading false.

Sun, 19 Jan 2025 10:33:32 -0700

I got this Klein tools MM700 True RMS multimeter, when testing resistence or continuity, by touching test leads together it should reads less than 1 Ohm, but the reading is 3-4 Ohms now.

I have purchase new Klein tools OE replacement test leads, verify they are good with other known good meters, test both fuses, replace batteries, etc.

I tried everything I could, and even went to Klein tools website looking for repair portal, oddly there is none.

Klein tools simply provides 2 yrs warranty return window and no links for repair, feels like that their meters are basically consumables, and when warranty expires, just toss it away and get new one, wtf is that?

So now I have a faulty meter which cost me $150+ bought new, a known brand, not no name cheap amazon junk, but acting like one.

Should I try something else to fix it? or just get a Fluke?

⟐ Answered January 19, 2025 at 10:33 MST

MCH-108 Digital Multimeter: Am I testing continuity correctly?

Mon, 09 Dec 2024 03:18:18 -0700

I recently bought a ifixit multimeter and I tested it out to see if it was working properly. I tried out the different modes and they worked until i tried out continuity. I took a battery that i knew was charged and tried to test it out my multimeter. I turned continuity testing mode on and touched both probes together to see if it would beep and it did. I then took the red probe and held it on positive terminal and put the black probe on negative but the multimeter didnt beep. I was very confused. I then got the idea to put the red probe on the negative terminal and the black probe on the positive terminal and guess what, it beeped.

My question is when testing continuity in a battery am i supposed to put red probe to positive and black probe to negative or am i supposed to do red probe to negative and black probe to positive.

⟐ Answer edited December 09, 2024 at 3:18 MST

Multimeter: MastTech MS8229 beeps all the time

Thu, 04 Jul 2024 19:19:13 -0700

Hi I own a MS8229 multimeter for a few years now. It works fairly well except the one (super annoying) thing it does is it beeps whenever it is turned to a current/voltage/resistance measurement. It doesn't matter if the probes are plugged in or not. The beep differs (deeper beep) if the probes aren't plugged in but then it's a high pitched beep when they are removed. The beep goes away if I change it measure lux/audio, etc…

So wondering how/if this can be debugged. I'm also thinking to disconnect the speaker as it's terribly loud. Is there a suggestion one what I can do to fix this? I'm thinking of clipping the speaker but that seems like a worst-case scenario. I'd hate to throw this device away.

⟐ Answered July 04, 2024 at 19:19 MST

Cen-Tech Seven Function Digital Multimeter: My meter does not work

Fri, 10 May 2024 10:14:48 -0700

My meter blinks -1 and if I touch probes together on continuity the blink stops but meter does nothing else.

⟐ Answered May 10, 2024 at 10:14 MST

MCH-108 Digital Multimeter: What is the accuracy of the device?

Tue, 29 Aug 2023 14:51:36 -0700

Hey all!
I've been eyeing the market for a digital multimeter and I'm definitely interested in this model, but unfortunately there aren't any technical specifications listed on the store page for the product. I just wanted to know if anyone knew what the accuracy of this model is? (i.e. To how many decimal places can this model measure confidently)

Thank you for your help!

⟐ Answered August 29, 2023 at 14:51 MST

Cen-Tech Seven Function Digital Multimeter: In the Multimeter AC & DC 200 volt not working properly

Thu, 17 Aug 2023 16:23:26 -0700

Seven Function Digital Multimeter AC & DC 200 volt not working properly

⟐ Edited August 17, 2023 at 16:23 MST

Multimeter: My multimeter won't turn on after high voltage spike

Sun, 09 Oct 2022 23:53:19 -0700

I was measuring the voltage of a small fly swatter racket so I could modify it and make a lantern bug zapper thing, so I barely tapped the button to attempt to produce a smaller voltage, and I expected it to be around 280 to 400v, but my meter just shut off and now it won't turn back on. It is a barn star DT9205A from Tractor supply with a CAT ll 600v rating on the bottom left. Note it looks NOTHING like the picture I selected. It is a big 10 inch long meter with resistance test, ac and DC voltage up to 600v, capacitance test up to 200 μF, and an ac and DC current test up to 10A. Please help soon as this is my only multimeter!

⟐ Edited October 09, 2022 at 23:53 MST

Fluke 77 Series III: Is my fluke 77 blown?

Tue, 17 May 2022 08:27:58 -0700

I tested an electric fence with my Fluke 77 series II. Bad idea. Now I can't read AC/DC voltage or amperage, or resistance. I've replaced the fuse. I'd appreciate any assistance.

⟐ Commented May 17, 2022 at 8:27 MST