How to repair a faulty motherboard?

The motherboard is located inside the cabinet of our computer and houses the microprocessor, the memories, the graphics card and is where all the storage units are connected, basically, it is the central component of any computer. As you can see, a PC could not work without a motherboard, hence its importance.

Identifying what is malfunctioning on a motherboard can be quite a headache, literally too much to do there to efficiently dissect faulty material and repair it. This is the reason why most repair work is done by professionals or amateurs. It takes a long time to have full control over handling hardware problems accurately. However, there are some common problems on a motherboard that could have a relatively simple solution.

Index of contents

Capacitor replacement on the motherboard

One of the most common motherboard problems has to do with capacitors (or capacitors). This is something well known to professionals and amateurs in motherboard repair, capacitors fail and swell.

The problem persists wherever a capacitor is used and there is only one thing you can do with them, replace them. Discovering a faulty capacitor is easy - it's the one with the bulging top and an electrolytic glue leak. Most capacitors expel the electrolytic fluid within them. This material may dry on the back or leak on the circuit board. In the worst case, the capacitor explodes due to excessive electrical voltage. If they are not externally damaged, you can check them using a capacity meter or multimeter.

To replace the capacitors, you will need:

You will need a soldering iron, tin and some original capacitors of the same capacity as the old ones, they can be neither smaller nor larger than the original ones, they have to be exactly the same in their characteristics. Of course, you should also have good practice soldering and desoldering so as not to damage the motherboard.

Checking with beep codes

To diagnose a problem, you will need to know where to look. The first stop would be the BIOS POST (Power-On Self-Test). If the computer beeps at startup, there is a problem with certain parts on the motherboard. This is good (relatively speaking) because the beeps will tell us directly what's wrong. Pay close attention to the type of beep (the duration - short or long and the number of beeps). You have to search the Internet for the "BIOS beep code" , which will give us a substantial clue of where the problem is.

Source diagnosis:

It never hurts to have a second spare source, just in case. If the computer continues to crash and the motherboard is showing no signs of life, it may be due to the power supply (PSU). Use another spare source to do the corresponding tests is highly recommended. If the computer does not turn on or beep, there is surely a power supply failure.

Static discharge

A circuit board can easily be damaged by static electricity because it causes a small power surge, which is enough to kill the fragile circuit. Therefore, you must take two precautions:

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The first is to provide a proper ground (earth) connection to the outlet to which the PC is connected.

The other problem is human contact with the motherboard. Every time you touch the metal of the cabinet or plate directly, you risk generating static current through them. That is why it is recommended that before starting to manipulate the motherboard, touch something metallic other than the computer to eliminate the static current from your hands.

That's all folks, I hope it has been helpful and see you next time.

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