How to test LEDs using a cheap digital multimeter (Cylindrical, SMD LED)

Ғылым және технология

- Rotate the multimeter's dial to DIODE
- Put the multimeter's leads in contact with the LED's leads
- If the LED lights up then it good, if it doesn't then reverse the multimeter's leads
- If the LED still doesn't light up then it might be bad/damaged

Пікірлер: 47

  • @therealrollaz
    @therealrollaz2 жыл бұрын

    Best vid on this, you show it's not "bad" to connect opposite leads, and you showed that it should work on any of the contacts! Thanks for the great video!

  • @RiffRaffMama.
    @RiffRaffMama. Жыл бұрын

    Excellent explanation. You made it so simple to understand and even taught me something I didn't know about the legs lighting up different parts of the led.

  • @magnogreato
    @magnogreato Жыл бұрын

    Very surprised that you did not mention that LED's have a "Flat Side" which typically always indicates that side is Neg...

  • @damirpetrovac5126
    @damirpetrovac51269 ай бұрын

    Wow, simple and right on the spot explanation. Nice one 👍

  • @RCnerd74
    @RCnerd74Ай бұрын

    Thanks for sharing. Simple, quick and helpful video.

  • @CapitalNick
    @CapitalNick10 ай бұрын

    It's important to note that some multimeters don't put out enough voltage to drive an LED, depending on an LED's forward voltage. So not lighting up isn't always an indicator of a bad LED.

  • @Mr.G399

    @Mr.G399

    3 ай бұрын

    so then what do you do?

  • @deesto
    @deesto Жыл бұрын

    Wow. Great Macro and night filming work!

  • @jacobbabu607
    @jacobbabu607 Жыл бұрын

    Very good and simple way of explaining things.god bless

  • @micdev42
    @micdev422 жыл бұрын

    really clear. Thanks for taking the time to do the video.

  • @mauriciomarino6669
    @mauriciomarino666911 ай бұрын

    Hello. Thanks for your videos. I have a question I’m replacing the original T10 on my dashboard 67 Ford. On the circuit board with the old bulb installed I get a sound on my multimeter but when I installed the new led bulb it doesn’t make any sound on the multimeter. I checked the led bulb like you show on the video and get the bulb to light up. I jus want to make sure they work before I install the dashboard back. Thanks for your help.

  • @guyneeser2029
    @guyneeser20292 ай бұрын

    Finally, somone that has a brain to show easy to test led's, thank you SIR, my led is ok

  • @dariusnickmanesh8021
    @dariusnickmanesh8021 Жыл бұрын

    Thanks. So good explanation.Because you explained clearly, Could you please make other video about how to check every electronic component with multimeter and repair of dvd recorders and other equipment? Kind regards 👍🌹🌹🌹🌸🌸☺️

  • @danielseychell6282
    @danielseychell6282 Жыл бұрын

    Very helpful and understandable..Thank you..👋👋

  • @dave7421
    @dave7421 Жыл бұрын

    Such a great video, so informative and understandable.. well done ! and thank you..

  • @MeLSL1
    @MeLSL12 жыл бұрын

    Really helpful. Thanks!

  • @markbamber7126
    @markbamber7126 Жыл бұрын

    Hi very useful informative video...thanks.

  • @KingKatura
    @KingKatura8 ай бұрын

    What about in situations where they are connected so that if one goes out none of them will power up? Im trying to find the bad LED so i can replace it or route around it.

  • @Tryhardergeek
    @Tryhardergeek3 жыл бұрын

    hellol im commenting regarding the video reagarding the batch move from subfolders using total commander it's my problem too but the only difference is that, instead of files, i need to move the FOLDERS inside those subfolders. total commander bypasses that and go straight to the files, so cant move the folders inside the subfolders. what do i do?

  • @furulevi

    @furulevi

    3 жыл бұрын

    I think it won't work with folders... Tell this issue to the author of Total Commander (support@ghisler.com) maybe it will be added.

  • @albear972
    @albear9726 ай бұрын

    Great video! 👍

  • @amaxtech8383
    @amaxtech83832 жыл бұрын

    Good video 👍

  • @user-ld2or3bh7x
    @user-ld2or3bh7x9 ай бұрын

    Excellent very well explained thanks

  • @rob0516
    @rob0516 Жыл бұрын

    Using a DMM, forward voltage on led reads about 2.4v, but when reversing the leads,on anode and cathode meter reads 0.7V. Is that normal? Most videos say OL when reversed?

  • @jrockafellow1971
    @jrockafellow19716 ай бұрын

    Dec 2023. I am really looking for how to check an LED standard light bulb that is in standard overhead light fixture. But thanks for how to do micro-mini-LEDs.

  • @nopeacefordwicked5315
    @nopeacefordwicked53152 ай бұрын

    Thanks. Really helpful

  • @ss-5553
    @ss-5553 Жыл бұрын

    Great video thanks.

  • @manuelp7912
    @manuelp79122 жыл бұрын

    It really help me! Thanks a lot!

  • @Henry_Jones
    @Henry_Jones2 жыл бұрын

    Why doesnt the continuity buzzer go off for the good led? The led showing shows continuity but no buzz?

  • @yanikkunitsin1466

    @yanikkunitsin1466

    2 жыл бұрын

    Buzzer buzzes when probes connected via small resistance("short circuit"), but LEDs for multimeter looks like capacitor(it's not really, of course), thus no short circuit or buzz.

  • @Papowa
    @Papowa2 жыл бұрын

    thanks.

  • @WattWise
    @WattWise6 ай бұрын

    Thank you.

  • @ozanpress
    @ozanpress7 ай бұрын

    What kind of battery the multimeter has inside? Mine doesn't light them up !

  • @furulevi

    @furulevi

    7 ай бұрын

    This model usually has a 9V battery.

  • @izzzzzz6
    @izzzzzz64 ай бұрын

    Not working on all expensive DMM's! I tried 2 nice DMM's and only one of them would give a faint glow. better than nothing i guess.

  • @photondebuger45
    @photondebuger45 Жыл бұрын

    That's trippy

  • @FknNefFy
    @FknNefFy Жыл бұрын

    Ah perfect thank you

  • @SimonStuff2000
    @SimonStuff20002 жыл бұрын

    3:58 I don't understand, why the multimeter always shows 1?? Also, some times it shows ohms? And some times just 0,why?

  • @YaBuoyCJ

    @YaBuoyCJ

    Жыл бұрын

    Because its stating that the resistance is NONE or more or less very low

  • @cameramanmike2072

    @cameramanmike2072

    8 ай бұрын

    And your battery level is different. On a fresh battery it should read 000. As your battery level lowers from being used you'll pick up a one maybe even a two before your meter blank's out

  • @davidfalconer8913
    @davidfalconer89136 ай бұрын

    A cheap way to test ( any ) LED is to use a 9 Volt block battery with a 680 Ω resistor in one of the connector leads , this will light any good LED safely ! FYI , you need to attend to your BLACK multimeter lead as it is about to break at the meter plug end , snip the lead , slide over correct heatshrink , resolder and shrink the sleeve ! ! .......... DAVE™ 🛑

  • @EgyptCanada
    @EgyptCanada3 ай бұрын

    👍👌👏🙏🙏

  • @JACK-wh6jl
    @JACK-wh6jl3 ай бұрын

    XCLNT DEMO AS ALWAYS 😎😎😎😎😎😎😎😎😎

  • @kannan.r5748
    @kannan.r57483 жыл бұрын

    A

  • @viriatomorenohuerta6425
    @viriatomorenohuerta64252 жыл бұрын

    D

  • @ericportenard1513
    @ericportenard15132 жыл бұрын

    a l aide

  • @alm4862
    @alm4862 Жыл бұрын

    Thank you

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