Great tip. Thanks

Thanks for watching. I still use the Mestek every day except for buzzing out when tracing tracks on boards!

Thanks. It enables teh frequency measurement and display on the LCD only when set to AC mode.

Not bright enough. I revert to an LCD display meter for outdoors. Even on a bright overcast day it is a problem. The display and the delay between making continuity and the continuity beep are the only issues I have with this meter. Mine is getting a bit scrappy now but no faults after suing nearly all day every day since I made this video. I have a boxed new spare one on the shelf.

I agree

It is a good meter with a couple of issues that are mentioned in the review. I use it intensively daily and it is accurate and fast to settle, I am only forced to reach for the UNI-T when I need to zip around when reverse engineering boards.

Thanks for the tip. I still use one of these daily. I am on my third one,.

Pretty good otherwise though....??

@@razenby Yeah, great value for the money. My son gave me a spare Fluke 77 he had today, real bargain. :-)

@@petermainwaringsx I still use my Fluke I used every day in the Mid 80s.

@@razenby I think it may be the one I gave to my son back in the 80's that he's returned to me. He seems to collect them now, along with Weller TCP's.

It was still reading OK at 1.3MHz and the Mhz icon appeared that wasn't documented,

Yes it will measure it. Refer to the specification for the accuracy. The displayed resolution on the 100uA range is 0.01uA. I have no reason to believe that the specification for this product is wrong as it has met it's spec on the all the ranges where I have tested it.

@@razenby Thank you very much.

Thanks. I use DM100C meters every day in an electronics context. The DM 91A doesn't appear to offer anything except a simplified (compact) version of the DM100C with fewer options. It is smaller and has only auto-ranging which means that you have to wait for the display to stabilize as it does the auto ranging which may be slower if you are doing a lot of measurements. The DM91a has a cheaper display (A plain LCD) but in my opinion this is an advantage as the DM100C is very hard to see outside even on a bright overcast day. What I would like to see is a version of the DM100C with a straight LCD display. I would buy one today. So, if you want a compact meter to use outside and you dont need the additional set ranges and functions the get the DM91A. For my money the 100C is much better value.

Thanks and welcome

I agree. It is pretty great for the price though..

@@razenby To be honest i just bought it cause of the screen..@50 you know the eye aint all that good...but my main meter is a Agilent 1242....Fluke is over rated...

@@jesterraj I agree, Fluke used to be outstanding but then along came the Chineeese....now it is just overpriced.

Yes.

It looks the same - identical in fact so it probably is. It is such a great meter. I only wish they they would sort the delayed continuity beep, fit a daylight visible display and make the probe pugs linger so that they engage much deeper in the sockets in the body of the meter. They just hang on by the tip and if the lead moves or you move the meter then you have to push them fully home again. I have got into the habit of pushing them in each time I take a measurement, especially when I am working with high voltages. However it is a great meter for the price. I use it every day.

Yes it is protected.

I have use this daily for just over a year and the cap range works well enough. Claimed spec: Capacitance Range: 9.999nF/99.99nF/999.9nF/9.999μF/99.99μF/999.9μF/9.999mF/99.99mF Capacitance Resolution: 0.001nF/0.01nF/0.1nF/1nF/10nF/100nF/1μF/10μF Capacitance Accuracy: 9.999nF ~9.999mF: ± (4% reading + 3 digits); 99.99mF: ± (5% reading + 3 digits)

@@razenby really perfect! And thanks a lot for your response 🙏🙏🙏🙏🙏

You are welcome.

I believe that this is the best meter for the price. I have use this intensively daily . The only drawback is the low brightness display in average daylight and the continuity beep delay. I bought a few others for the office but this is the go to meter for me so far. It doesn't eat the batteries. Lack of immediate continuity beep when reverse engineering / checking is an issue. If I am trying to locate where a board trace goes and I cant see it the trace I usually revert to my old meter for this as the delay prevents it beeping when scooting along a row of pins on a chip.

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@Jay Robert instablaster =)

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Take it apart and clean/inspect the switch contacts. Mine failed in this way and I cleaned the wipers and PCB surfaces and it worked for about another 9 months.

Thanks for you’re reply … appreciated… unfortunately could not solve the problem.

Yes there is a probe. The one in the video failed in July 2022 after almost daily use for 18 months. I had to take it apart and clean up the rotary switch contacts on the main PCB and the wipers. Works OK now. Not that shabby a tool.

I suppose the alarm that sounds when the current inputs are plugged in makes blowing a fuse is less likely. Usually when I blow a fuse it is because I have forgotten to switch leads around.

@@razenby Can you do an LED and a transistor test? I'm planning to buy this model. Would you recommend it? Can you do a comparison between this one and UNI-T UT89X UT89XD?

You can do continuity checks on a transistor to see if shorted and if the junctions are good on NPN and PNP using the diode continuity mode. Red and green LEDS will meter OK on the Diode continuity mode but white blue may not register as the maximum test voltage on the DM100C between the probes is ~3.2V which means that it isn't isn't sufficient to make the LED junction conduct when forward biassed. of course you can test for shorts..

Muito bom este multímetro Ci eu tivesse dinheiro ia comprar um

Just tried on mine doesn't do that. I did send a link to MESTEK telling about the issues. The slow response to continuity beep and poor visibility of the display in daylight is still annoying.

@@razenby Strange that it doesn't work for you! I have been using for about 1 month now and my only 2 real complaints are (1) the leads plugging into the sockets can be tricky as you have pointed out and (2) the temperature measurement is really off. I tested the probe against 3 temps -- Ice floating in water, my body temp, and steam coming out of a kettle, and all 3 temps are off and not in even a constant way. What has been your experience with the temperature measurements? Maybe you can add to your feedback to Mestek.

@@razenby Hi, I was wondering if you got any respnse from your feedback to Mestech? Also, how do you send them feedback? I am interested in reporting the problem with the temperature probe and see if they can do something to fix. Is anyone else having a problem with the temperature measurements?

@@pradeepbansod3334 The address I used is 'sales@mestek-tools.com' . I haven't tried the temp measurements. Could it be your thermo-couple?

@@razenby Thanks! I will defintely write to them. Yes, it could be just the thermocouple, but would help to know if others are having the same issue. Feedback always welcome! BTW, are they responsve to your e-mails?

I bought 3 for the office. Displays are all the same. I have been using it every day for about six months. Annoying things: 1. Display is too dim to use outside. 2. The diode mode beeper is to slow to respond for head-down continuity tracing on PCBs. 3. The leads don't always make contact in the socket. They only need to be a couple of mm from being plugged in they lose contact. I had a look inside and the contacts in the meter leads only engage bu about 3 to 4mm so if you knock it it stops reading until you shove it home again.. Otherwise a very good meter for the money.

On later models it wakes up the meter if it has gone into standby (doesn't work on mine). Voltage Frequency measurement???? I use thing every day and have never touched the VFC button... I have the instructions here so Ill have a look.

DM100 has auto range setting for Volts and Ohms.

Capacitance Range: 9.999nF/99.99nF/999.9nF/9.999μF/99.99μF/999.9μF/9.999mF/99.99mF Capacitance Resolution: 0.001nF/0.01nF/0.1nF/1nF/10nF/100nF/1μF/10μF Capacitance Accuracy: 9.999nF ~9.999mF: ± (4% reading + 3 digits); 99.99mF: ± (5% reading + 3 digits)

Use diode continuity mode. The forward voltage drop (you will see a glow) varies between technologies so some Blue LEDs wont glow.

V.F.C variable frequency voltage measurement. It means that it has a button that noone else has!

Only the usual thing like remove the batteries and wait a while and then try again. Was it dropped or did it get wet? We have 5 of them here at the office and they are used every day,. No failures so far....If you dropped it hen take her apart and have look for damaged contacts or cracked PCB etc.. Otherwise contact Mestek.. the might replace it for you. If you want to send it to me I'll take a look and put up a video about it.

Banggood or ALiExpress is are the cheapest source that I have seen

Probably. In spite of this they have done a pretty amazing job for the price.... Just a couple of things that annoy. This one is still going strong after daily use on HV equipment. It has been dropped and thrown around. The connector pins on the test leads that were supplied with the unit aren't long enough - they only engage by maybe 4 mm so they frequently lose contact when the leads are moved. I use different test leads.

@@razenby There is another rip off of this DVOM. Richmeters RM406B It had a faster latching in continuity mode by using non cheap leads

Too thick to understand?