Can we test IC using a multimeter?

By on July 1, 2013

How can we test IC using a multimeter ?

Answers:

Multimeter can only be used to test the IC dc supply voltage and to use the ohm range to find out if the IC is shorted to ground or not. Generally using an oscilloscope to test an IC is much more accurate because one could see the input and the output signal assuming if  the IC did not develop any short circuit and has the right DC SUPPLY input (VCC).

One also have to know that not all IC has input signal. Take oscillator IC like the common power IC found in switch mode power supply (UC3842) as an example. This type of IC produce it owns output waveform once the dc supply is present. This means it does not need an external input signal in order to produce the output signal.

Beside this, there are Microcontroller Unit (MCU), PIC, EEprom, FLASH Rom, Ram  IC which require a specialize tester like programmer and Ram tester in order to check if they are good or bad.

Conclusion- One has to know what type of IC they are having then only use the right test equipment to check on the ICs.

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32 Comments

  1. timon kogo

    April 5, 2014 at 2:47 am

    i ave to know how to measure resistors,ic,capacitors,inductors etc

    Likes(7)Dislikes(3)
    • Jestine Yong

      April 5, 2014 at 3:42 pm

      HI Timon,

      All the testing I have compiled into this ebook http://www.testingelectroniccomponents.com

      Jestine

      Likes(15)Dislikes(4)
      • tarbo

        May 7, 2016 at 6:34 pm

        where can get those ebook

        Likes(2)Dislikes(1)
        • Jestine Yong

          May 7, 2016 at 7:57 pm

          Hi Tarbo,

          Which ebook do you want to buy?

          Jestine

          Likes(4)Dislikes(2)
          • Mallesh

            September 21, 2017 at 12:14 am

            Sir how to check 8pin ic

            Likes(1)Dislikes(0)
            • Jestine Yong

              September 21, 2017 at 11:11 am

              Hi Mallesh,

              It depends on what type of IC you want to check.

              Jestine

              Likes(0)Dislikes(0)
  2. ahmad

    July 26, 2014 at 6:43 pm

    how i want buy book ?

    Likes(3)Dislikes(1)
    • Jestine Yong

      July 26, 2014 at 8:54 pm

      HI Ahmad,

      I have sent a personal email to you. Please check your email account.

      Jestine

      Likes(5)Dislikes(2)
  3. Prince bikram

    January 20, 2016 at 10:16 am

    How can i repaire my portable dvd tv power supply

    Likes(2)Dislikes(1)
    • Jestine Yong

      January 20, 2016 at 8:41 pm

      Hi Prince,

      Please visit the link below to get some ideas:

      http://www.jestineyong.com/category/dvd/

      Jestine

      Likes(4)Dislikes(0)
  4. muchoki

    May 10, 2016 at 8:29 pm

    give in details how to test ic and the way I can detect it bad or good

    Likes(5)Dislikes(1)
    • Jestine Yong

      May 11, 2016 at 7:31 am

      Hi Muchoki,

      Check out this link:

      http://www.jestineyong.com/pwm-ic-testing/

      Jestine

      Likes(1)Dislikes(4)
  5. Bhavin

    June 24, 2016 at 3:10 pm

    dear Jestine
    please let me know how to check IC, Transistor & capacitor

    Likes(5)Dislikes(0)
  6. Md.leyakat ali

    August 8, 2016 at 9:37 pm

    i want to learn electronics pcb repairing. how can i learn

    Likes(0)Dislikes(1)
    • Jestine Yong

      August 9, 2016 at 11:00 am

      Hi Md,

      You can buy ebooks to learn and practice. You can also attend repair classes.

      Jestine

      Likes(1)Dislikes(1)
  7. Bhavesh Zapadiya

    November 6, 2016 at 1:39 am

    hello i want book electronicks repairer

    Likes(0)Dislikes(0)
    • Jestine Yong

      November 7, 2016 at 9:00 pm

      Hi Bhavesh,

      You can visit the link below to buy:

      http://jestineyong.com/resources-2/

      Jestine

      Likes(0)Dislikes(1)
  8. abbas

    November 11, 2016 at 2:57 pm

    hello

    How can using a multimeter to test IC L6384D .thanks

    Likes(0)Dislikes(0)
    • Jestine Yong

      November 12, 2016 at 10:17 am

      HI Abbas,

      The multimeter can only check the dc supply voltage pin. Pin 5 and 7 you need a scope to check on its waveform.

      Jestine

      Likes(2)Dislikes(0)
      • Joy

        January 19, 2017 at 3:43 am

        Can anyone help me with my broken mouse .! The only thing inside it is this sensor IC,. There's active on led , but no cursor on screen. Please Send me a email if you've any helpful suggestions.

        Likes(2)Dislikes(0)
        • Jestine Yong

          January 20, 2017 at 12:58 pm

          Hi Joy,

          Have you tried using another mouse to check if the mouse is the problem.

          Jestine

          Likes(0)Dislikes(0)
  9. Elegis Thongni

    February 28, 2017 at 7:02 pm

    Hello Sir I want to know how to repair and to test electronic using digital multimeter and understanding the fault of electronic

    Likes(1)Dislikes(1)
    • Jestine Yong

      March 1, 2017 at 3:33 pm

      Hi Elegis,
      It is all covered in this ebook here http://www.testingelectroniccomponents.com/

      Jestine

      Likes(0)Dislikes(1)
  10. jibrin

    July 2, 2017 at 11:51 pm

    Hello Sir I want to know
    how to repair laptop and to test
    electronic using digital
    multimeter and
    understanding the fault of
    electronic

    Likes(0)Dislikes(0)
    • Jestine Yong

      July 4, 2017 at 11:04 am

      Hi Jibrin,
      To learn laptop repair is a big subject. You may need to attend a course or buy a course for it. To test electronic components using digital or analogue you can buy my ebook here at http://www.testingelectroniccomponents.com. It comes with my support.

      Thanks.

      Jestine

      Likes(0)Dislikes(0)
  11. Ayodele

    September 22, 2017 at 9:02 pm

    sir
    I want you to help me on how to check ic if is working or not

    Likes(0)Dislikes(0)
    • Jestine Yong

      September 23, 2017 at 3:49 pm

      Hi Ayodele,

      It depends on what type of IC you want to check. For normal linear IC just measure the input and output IC pins waveform using oscilloscope. Other types of IC you need special Type of IC tester to test it

      Jestine

      Likes(0)Dislikes(0)
  12. Engr.Phunskwangurlu

    October 22, 2017 at 12:58 pm

    Sir,apart from high curent,what cause a working circuit to stop work suddenly.

    Likes(1)Dislikes(0)
    • Jestine Yong

      October 23, 2017 at 12:34 pm

      Hi Engr,

      Improper dc supply, dry joints, intermittent problems, bad component and circuit track break.

      Jestine

      Likes(0)Dislikes(0)
  13. EmmyG

    November 2, 2017 at 4:41 am

    pls sir, i will like to how read ic to detect if it's bad and also how to identify ic component if it's power or charging ic on laptop motherboard.

    Likes(0)Dislikes(0)
    • Jestine Yong

      November 2, 2017 at 10:08 am

      HI EmmyG,

      The answer is already in the written post. To identify the type of IC just go to Google and type in the IC part number. From there you will know if it is a power IC or charging IC or other type of IC.

      Jestine

      Likes(0)Dislikes(0)

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