How to Test a Motherboard With a Multimeter- TheBestMotherboard

How to Test a Motherboard With a Multimeter- TheBestMotherboard

Motherboards are the main component of a computer. They join all the parts of the PC to make a proper PC. All the parts of the computer communicate through it. Your rig can not work without a motherboard and everybody also want to know how to test the motherboard with a multimeter.

If the mainboard of your PC stops working or is not working as it was in the past, you can get a lot of problems. A failing motherboard or a dead motherboard can cause a lot of errors in your system. A failing motherboard shows a lot of systems indicating that it can die soon. If you want to know the detail about a failing motherboard or its symptoms, “Signs of a Failing Motherboard.

Now, if your motherboard is problematic, you need to check it. This can be done at home by a multimeter. You can check the simple problems of your motherboard using a multimeter. If you have a multimeter, then you can detect the electronic issues of the motherboard easily.

How to Test DC Voltages?

To check the DC voltages, you need a multimeter. The multimeter can be a digital one or an analog. The steps to this procedure are given below so you can easily do it

Testing motherboard with multimeter

First Step

Turn the multimeter to 20V DC. Plug the 20-Pin Atx connector and then connect the computer to an AC power supply. Examine the 20-pin Atx connector’s backside with the meter’s black probe and then set the black probe with 16 or 17 pins of the connector.

Second Step

Now use the other probe of the meter to check the pins 9 and 14. While checking those pins, keep looking at the readers. Now take the red probe and probe pin 9. If the meter shows a reading of 5 V, then it’s all right, but any reading above or below 5 V indicates a problem with the power supply unit.

Now probe pin 14, if the reading is between 3 to 5 V, then there is no problem; otherwise, the faulty switch can be the cause. Probing the pin 14 turns on the power switch, the PS_On value should decrease to 0, or else the power switch is at fault.

Third Step

To check the Power_OK, probe pin 8. Multimeter should show a reading above 2.5 while probing pin 8 with the red probe. It is an indication that the computer is in good condition to start.

Press reset and recheck the meter; the reading should drop down to zero and then climb up while the computer restarts.

How to Test Motherboard for Short Circuits?

Short circuits can lead to a complete failure of the motherboard. Along with the motherboard, it can also harm other components. A computer motherboard can be repaired, but finding out the problem can save the computer’s different parts.

How to test a motherboard with a multimeter

The full method to check the motherboard and the power supply unit with the multimeter is given below. Check out the step-by-step method of learning.

First Step

For this test, you need to unplug your PC. Please take out the plug from your AC power and give it rest for some time. The rest will drain all the remaining charges in the PC. Now ready your multimeter.

Set the multimeter on the lowest Ohm setting, this should be 200 Ohm, and connect both probes to each to turn the reading to zero. Connect both of the probes, red and black, to the chassis of the PC. The reading on the meter should remain the same.

Second Step

Now for the next step, take out the 21-pin ATX connector from the motherboard. The black probe of the meter should remain on the chassis. Use the red probe to check the DC connector’s black wire pins and the power supply unit’s AC connector’s ground pin. The readings while doing that should be zero.

Third step

To check the readings for the colored wires of the DC connector in the third step, keep the black probe on the chassis and then probe the colored wires. The colored cables should give a reading of 50 V or above.

Fourth Step

In the fourth and final step, remove the CPU from the motherboard. Once the CPU is removed, keep the black probe on the chassis and use the red one to check the GND pins. Probe the pins 3, 5, 7, 13, 15, 16, and 17 using the meter’s red lead. If the reading is returned as zero, then the connector is all right. Any other reading is an indication that the connector is problematic.

Final Thoughts

We showed you how to check the motherboard with the multimeter. How will you know when to check the motherboard like this?

A failing motherboard, like an ill person, shows symptoms. The symptoms indicate that the motherboard or some other hardware is at fault. The test with the multimeter can reveal if the motherboard is problematic or not.

If you have a faulty motherboard at hand, then replace it because repairing is not an option. The faulty motherboard can ruin the whole PC. So it is wise to get a single part changed instead of the entire PC.

Best Motherboard for Video Editing

Best Motherboard For I9 9900k


Share post on
Felix
By Felix

Felix knows a lot about computers. As a student of BSCS, Felix is passionate about technology. Since childhood, Felix has been a hardcore gamer who enjoys reviewing new gaming hardware. If you have any questions about computers, Felix will be happy to answer them.

Leave a Reply

Your email address will not be published. Required fields are marked *


The Best Motherboards is reader-supported. When you buy through links on our site, we may earn an affiliate commission.

RAM vs Processor – What is More Important for You? How to

RAM vs Processor – What is More Important for You?

CPU, or processor, and RAM, more commonly known as memory, are the two most...

By Felix
Updated
B550 VS X570 Motherboards: Which One Is Best In 2022? How to

B550 VS X570 Motherboards: Which One Is Best In 2022?

There is the X570 chipset from AMD which is the best and the B550...

By Felix
Updated
Motherboard Sizes Comparison Guide – TheBestMotherboard How to

Motherboard Sizes Comparison Guide – TheBestMotherboard

If you are building a computer yourself, you should know the differences between the...

By Felix
Updated
How To Identify BIOS Chip On Motherboard? How to

How To Identify BIOS Chip On Motherboard?

First of all identifying bios chip on the motherboard, just need to know. What...

By Felix
Updated
What’s a Safe Motherboard Temperature? – TheBestMotherboard How to

What’s a Safe Motherboard Temperature? – TheBestMotherboard

Ideal temperatures range from 20C to 80C degrees Celsius Fahrenheit (68 degrees to 176...

By Felix
Updated
How Do I Know If A Motherboard Will Fit In My Case? How to

How Do I Know If A Motherboard Will Fit In My Case?

Many people overlook the dimensions when they build a PC. The belief is that...

By Felix
Updated
Motherboard (RGB & Fans) Still On After Shutdown How to

Motherboard (RGB & Fans) Still On After Shutdown

Windows' fast startup setting may interfere with your computer's shut down sequence if you...

By Felix
Updated
How to Check Power Supply Wattage? In 2022 How to

How to Check Power Supply Wattage? In 2022

If you have a power supply that delivers lower wattage than the actual requirements...

By Felix
Updated

Latest Posts

RAM vs Processor – What is More Important for You? How to

RAM vs Processor – What is More Important for You?

CPU, or processor, and RAM, more commonly known as memory, are the two most...

By Felix
Updated
Best Motherboards For Ryzen 5 3400G In 2022- TheBestMotherboard Motherboard

Best Motherboards For Ryzen 5 3400G In 2022- TheBestMotherboard

The AMD Ryzen 5 3400G is among the most amazing Ryzen 3000 Series processors....

By Felix
Updated
Best Motherboard For Intel i9-12900k in 2022- TheBestMotherboard Motherboard

Best Motherboard For Intel i9-12900k in 2022- TheBestMotherboard

A Core i9-12900K processor has 16 cores and 24 threads, as reported by Intel....

By Felix
Updated
Best RAM For Intel Core i7-11700k in 2022- TheBestMotherboard RAM

Best RAM For Intel Core i7-11700k in 2022- TheBestMotherboard

HowFeaturing eight cores and sixteen threads, the Intel Core i7 11700K delivers excellent multitasking...

By Felix
Updated
Best RGB RAM In 2022- TheBestMotherboard RAM

Best RGB RAM In 2022- TheBestMotherboard

Whether your computer is fast and responsive is largely determined by its RAM, not...

By Felix
Updated
Best Ram For i7 9700k in 2022- TheBestMotherboard RAM

Best Ram For i7 9700k in 2022- TheBestMotherboard

AMD's i7 9700k processor is regarded as a highly competitive mid-range gaming chip. Recent...

By Felix
Updated
Best Ram For Ryzen 9 3900x In 2022- TheBestMotherboard RAM

Best Ram For Ryzen 9 3900x In 2022- TheBestMotherboard

In the event you plan to build your own gaming PC, you should be...

By Felix
Updated
Best Video Editing RAM In 2022- TheBestMotheboard RAM

Best Video Editing RAM In 2022- TheBestMotheboard

What is the best RAM for video editing? A lot of people ask me...

By Felix
Updated