Motherboard short circuit and disconnect power protection is one of the laptop motherboard failures.
There are three reasons for the short circuit of the laptop motherboard:
1. The insulation design of the motherboard itself is poor;
2. The other one is the external metal parts on the motherboard, such as small metal screws, liquids, or small bugs that climb into the motherboard,etc. for a short circuit.
3. Fever problem
Heat is the enemy of electronic products. Computer components need to be kept at a certain temperature to function properly, but the laptop constantly generates heat during operation, which is why heat dissipation is critical to the computer. When the computer overheats, there is also the possibility of shorting the motherboard.
3 Ways to Check the
Damaged Motherboard
There are a few steps you can take to determine the motherboard failure:
1. All motherboards are built with a self-test tool. If there is an error, the motherboard will sound out a series of beep errors. These "beep codes" can vary by manufacturer, but are similar. You can translate these "beep codes" at your motherboard manufacturer's website, or use Computer Hope's beep code guide. It should let you quickly diagnose the motherboard problem and hopefully solve it.
2. Please check the basics of the PC component, laptop fan and RAM. Usually these two components are the cause of looking at the motherboard failure and failing to boot the BIOS or UEFI.
3. Please check the CMOS battery on the motherboard. If your computer is more than one year old, you may need to replace the CMOS battery.
We will repair the motherboard for short circuit of the Acer laptop motherboard to teach you how to find a short circuit on a motherboard and fix it.
Acer Laptop Detects Motherboard Short-Circuit Protection and Repair:
1. Use a screwdriver to open the back cover of the Acer laptop and remove the shorted motherboard.
2. Observing this motherboard, you can see that there is a marked burn on the edge of the pc118 capacitor.
3. Then remove the capacitor and open the copper surface of the surface to see that it has been burned to carbonization.
4. Wash the motherboard with motherboard washing water and scrape the burnt layer with a knife.
5. Through the circuit diagram, we can know that the short-circuit point is the main power supply 19V. The problem now is howto trace the short circuit on Acer motherboard.
My method is to take the electric flying line from the common point on the side, measure the resistance value of each inductor with a multi meter, and finally find that the 5v voltage is abnormal.
6. Finally, the power chip was replaced,which is equivalent to the computer power supply, and found that the resistance is normal. After the power-on test, I found that everything was back to normal. The Acer laptop motherboard problem was fixed after a short-circuit.
It seems complicated, but the operation is not difficult. If you can do it by yourself, you can save a lot of laptop motherboard short circuit repair cost.
Summary:
This is solutions for solve laptop motherboard short circuit, I hope it can help you. Although this article only uses the Acer laptop as a case, this method for other models and brands of notebooks can also be used depending on the situation.
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