The laptop can be turned on when water enters, and the screen does not light up

After shutting down, the heat gun blows.

The main components of the laptop are not easy to maintain, and the water ingress is more serious, don't say that I am a three-year novice, even if it is my teacher, I can't reach that field, find a professional maintenance personnel to repair it.

1. Unplug the power supply and battery immediately, and the speed of power failure directly determines the most critical factor in the severity of the damage to the notebook. Don't start shutting down slowly, and then shut down when the system shuts down normally. If it's slow, it's quite dangerous.

2. Pour out the water immediately according to the direction of the water intake, and quickly dry the water with a dry towel or paper towel. If there is water on the top of the keyboard, immediately turn the keyboard down (be careful not to let the water flow into the LCD screen), and try to pour out the water to avoid more water entering the motherboard.

3. If the keyboard gets water, remove the keyboard and observe whether the water has entered the motherboard. Carefully dry the front and back of the keyboard with a paper towel. If possible, you can use a hair dryer to dry it with cold air, and be careful not to use hot air, because the keyboard keys and other keys are plastic, which is not resistant to high temperatures, do not use hot air, and avoid blowing damage.

If the liquid is cola, vegetable soup, etc., you need to remove some of the buttons and carefully scrub them with pure alcohol. Because cola and other substances contain sugar, if it is not clear, it will corrode the wiring over time and cause damage to the keyboard.

4. Completely disassemble the motherboard, if you don't know how to disassemble the motherboard, it's best to ask a friend who knows more to help disassemble it. Observe whether there are water stains on the motherboard, and if so, carefully wipe it clean with pure alcohol. I use high-quality plate washing water to scrub the motherboard in notebook repair, but this kind of plate washing water is not available to ordinary people, and it is difficult to buy it in the electronics market in Beijing, not the kind of ordinary plate washing water.

This can be replaced by pure alcohol, Note 1 must use pure alcohol, not aqueous alcohol. Then dry the motherboard, or the hair dryer should not be too high, and pay attention to protect the plastic connectors on the motherboard.

Water enters the key parts, and after the machine is turned on, the water penetrates into the energized components and causes a short circuit.

When the notebook has just entered the water, because the water is a conductor, the water causes the motherboard to short-circuit, resulting in a crash or shutdown black, etc., at this time, it is just a water short circuit, and the components, wiring, and core of the motherboard are not damaged, and they can be repaired in time, and they can basically be repaired, and there is basically no harm to the notebook. The notebook is a mobile office computer developed after the desktop computer, and the notebook maintenance industry is a new type of maintenance industry that has developed since 1997. Notebook maintenance is divided into board repair and chip-level maintenance, like general after-sales service station maintenance.

If the motherboard is broken, replace the motherboard directly, and the real repair of the actual notebook should be chip-level maintenance, such as the motherboard, those components are broken, and instruments (such as multimeters, oscilloscopes) and other tools need to be used to measure and judge the bad components, and the repair should be done after replacement.