Can we test IC using a multimeter?
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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timon kogo
April 5, 2014 at 2:47 am
i ave to know how to measure resistors,ic,capacitors,inductors etc
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
tarbo
May 7, 2016 at 6:34 pm
where can get those ebook
Jestine Yong
May 7, 2016 at 7:57 pm
Hi Tarbo,
Which ebook do you want to buy?
Jestine
Mallesh
September 21, 2017 at 12:14 am
Sir how to check 8pin ic
Jestine Yong
September 21, 2017 at 11:11 am
Hi Mallesh,
It depends on what type of IC you want to check.
Jestine
Jezrael gagarin
February 7, 2018 at 5:48 pm
How can i buy a book??
Jestine Yong
February 7, 2018 at 9:58 pm
Hi Jezrael,
Which book do you want to buy?
Jestine
Jezrael Gagarin
February 8, 2018 at 11:14 am
I want to buy the Testing ELECTRONICS COMPONENTS.
Jestine Yong
February 8, 2018 at 8:26 pm
Hi Jezrael,
I have sent an email to you.
Jestine
ahmad
July 26, 2014 at 6:43 pm
how i want buy book ?
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
Prince bikram
January 20, 2016 at 10:16 am
How can i repaire my portable dvd tv power supply
Jestine Yong
January 20, 2016 at 8:41 pm
Hi Prince,
Please visit the link below to get some ideas:
https://www.jestineyong.com/category/dvd/
Jestine
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
Jestine Yong
May 11, 2016 at 7:31 am
Hi Muchoki,
Check out this link:
https://www.jestineyong.com/pwm-ic-testing/
Jestine
Bhavin
June 24, 2016 at 3:10 pm
dear Jestine
please let me know how to check IC, Transistor & capacitor
Jestine Yong
June 25, 2016 at 8:30 pm
Hi Bhavin,
The testing components information already compiled into my ebook Testing Electronic Components.
Jestine
Md.leyakat ali
August 8, 2016 at 9:37 pm
i want to learn electronics pcb repairing. how can i learn
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
Bhavesh Zapadiya
November 6, 2016 at 1:39 am
hello i want book electronicks repairer
Jestine Yong
November 7, 2016 at 9:00 pm
Hi Bhavesh,
You can visit the link below to buy:
https://jestineyong.com/resources-2/
Jestine
abbas
November 11, 2016 at 2:57 pm
hello
How can using a multimeter to test IC L6384D .thanks
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
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.
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
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
Jestine Yong
March 1, 2017 at 3:33 pm
Hi Elegis,
It is all covered in this ebook here http://www.testingelectroniccomponents.com/
Jestine
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
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
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
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
Engr.Phunskwangurlu
October 22, 2017 at 12:58 pm
Sir,apart from high curent,what cause a working circuit to stop work suddenly.
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
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.
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
ahmed yousef elmasri
January 10, 2018 at 4:25 pm
i have new methood to test the ic by multimeter
jeffrey
February 4, 2018 at 6:02 pm
how can i repair my jvc micro component system ux-g48 power board
jose
March 14, 2019 at 4:40 pm
sony ta v725 no audio. stk4162ii. how to know a defective ic using only dmm. 30v dc present on left channel before the relay. relay doesnt click possible a protect mode. rigth channel doesnt have dc on output. i connected a small spkr direct on ic output and touch the pin18 input and has humm. could it be a sign that the ic is good? and other component might be causing the problem? any help will be much appreciated. many thanks.
William Staylor
June 14, 2019 at 12:56 am
Have been working on a Tandberg 9000x tape deck and consider my self to be a newbie. Have replaced all caps ( except the three large ones which control the motors), transistors,a few resistors, transformer,all diodes and still have the same issues....the motors operate manually, no lights on the mode controls ( replaced the lamps ), none of the mode switches respond. Have not replaced any of the IC's, have checked with a DMM and all appears to have values between 500 and 700, but suspect this may be my issue. This unit has been owned by me since 1973. Any thoughts?
Thank you.
William
Jestine Yong
June 18, 2019 at 9:55 pm
Hi William,
I suggest that you direct replace the ICs as checking ICs with DMM is not accurate. The best is to direct replace and retest.
Jestine
kiran
August 28, 2019 at 6:54 pm
hi sir how to check any ics good or bad
kiran
August 28, 2019 at 6:59 pm
ic vg and impedance ok but data sending or receiving not working how we no ic is bad like that