The power adapter burns out and can t be turned on, and the laptop power adapter is broken and can b

I also like to do it myself.

But the landlord had better buy a substitute adapter to test the machine (the original is too expensive, there is no need to buy it.) Just look at how many volts your adapter is, buy one, it's fine, dozens of dollars)

The battery does not need to be installed.

Install the replacement adapter first to see if it can be turned on.

If it still can't be turned on, then I suggest you still find a professional laptop for repair.

The power chip is directly connected to the motherboard.

I guess there is a connection with the South Bridge, and this kind of repair is not so easy to get.

If you have to find which chip, I think you can call ** directly to the after-sales service to ask, and you will say that you are a dealer.

It's okay to have a customer ask.

But now there are not many people who really understand chips.

Repairs are cumbersome.

Good luck to the landlord.

Take it to the computer store to repair it, about the situation that the landlord said, it is possible, so it is recommended that the landlord still go to the computer store for repair, after all, it is a notebook, in case you can't do it yourself, it is possible to burn the entire notebook, or take it to identify it is safer!!

Just follow the specifications of the adapter to order an adapter.

There's no such thing as a good way.

Don't charge the battery yourself.

If the battery breaks down again, your laptop will be useless.

If you don't buy a new one, there's basically no way to do it

Summary. Hello dear, happy to answer your questions <>

What is going on if the laptop power adapter is broken and can be turned on The power adapter is broken will cause the power supply to be unable to be powered, and the device can be turned on normally, indicating that the device has stored power, pro.

What's going on with a broken laptop power adapter that can be turned on.

What's going on with a broken laptop power adapter that can be turned on.

Hello dear, happy to answer your questions <>

What is going on if the laptop power adapter is broken and can be turned on The power adapter is broken will cause the power supply to be unable to be powered, and the device can be turned on normally, indicating that the device has stored power, pro.

1. First shake the power connector or battery to see if the laptop power adapter or laptop battery is in good contact, if not, try to reinstall the laptop power adapter or battery. Possible failure scenarios are deformation of the power connector or loss of elasticity of the battery contacts. 2. If the power supply or battery connector is good, you can use a multimeter to measure the output voltage of the notebook power adapter or battery, mainly to see whether the output voltage is stable, and whether the actual output voltage value is consistent with the nominal voltage of the power supply.

You take the test one step at a time and <> it yourself

I don't understand. What does that probably mean?

That is, you shake the adapter first to see if the device can charge normally, dear.

If the adapter shakes, causing the device to charge intermittently, then your adapter is broken and needs to be replaced, dear.

The adapters are burned out.

Then you can't use the adapter to power the device, dear, it will damage the device battery plate.

Power off the device, unplug the charging cable, and buy a new adapter, pro.

Summary. Hello dear this is the notebook can not be powered on with the adapter, the adapter is equivalent to a transformer, first convert the household electricity to direct current, and then convert it into high-frequency AC or direct current into the computer. There is an intelligent charging control circuit when connected to the battery.

There are other paths to the connection to the computer, and he says that a resistor burn is just one possibility. These internal circuits have to be taken apart to know. It may be a fuse resistor that protects the circuit.

The adapter of the laptop is burned, and there is a power adapter that can't be turned on, what's the matter?

Hello dear this is the notebook can not be powered on with the adapter, the adapter is equivalent to a transformer, first convert the household electricity to direct current, and then convert it into high-frequency AC or direct current into the computer. There is an intelligent charging control circuit when connected to the battery. There are other paths to the connection to the computer, and he says that a resistor burn is just one possibility.

These internal circuits have to be taken apart to know. It may be a fuse resistor that protects the circuit.

Hello kiss reason: the power adapter and the computer do not match, such as the voltage is relatively high, causing the computer to crash. Workaround:

Replace the power adapter that fits your computer. 1. The interface plug and socket used in the interface form must match the size. 2. The output power supply voltage of the voltage adapter is consistent with the required voltage of the connected equipment (such as notebook).

If there is a discrepancy, it may not start properly or the device may be burned. 3. The power of the current or power adapter should be greater than the maximum power required by the equipment. If the power is insufficient, the voltage may drop, the adapter may heat up severely, or the adapter may burn out.

Kiss hello, the reasons and solutions for the laptop not to turn on: 1. Excessive use of the laptop or excessive power consumption of the standby battery for a long time will cause the power supply of the laptop to be insufficient, and it is recommended to charge more before use to solve this problem. 2. There is no reflection when the hardware is loose or the laptop is flooded.

If the hardware is loose, open the notebook and reinsert the loose hardware; If the hardware is damaged, it is necessary to replace the damaged hardware after testing with a professional instrument. 3. If the hardware is loose or the COMS data is wrong, the serial port, parallel port, hard disk, etc. cannot be recognized when booting, and it is necessary to replug and unplug the loose hardware and restore the COMS data to troubleshoot. 4. The computer alarm cannot enter the system.

Whenever the computer starts up, it sounds "Flute." The alarm sound of the "flute" is caused by hardware error or damage. This kind of fault needs to be repaired according to the different alarm sounds.

5. The operating system cannot be started. This type of problem is always reflected in a system boot error or reboot after the hardware detection is completed, and the solution is to restore the system or reinstall the system.

Here's how to fix it:Reason 1: Battery, power supply problems1, check all cables (including power plugs) to ensure that all devices are properly and tightly connected together.

2. Check whether the laptop has power (although most people will not make such a low-level mistake), because the notebook has a built-in battery, so it can be used without plugging in the power supply, of course, the time is limited, when the built-in battery is used up and not charged, it will cause the notebook to fail to turn on, at this time we just need to plug in the power to charge.

Reason 2: It may be caused by a virus infection, press and hold F8 to enter the advanced options page, select "Latest Correct Configuration", and then press Enter. After entering the system, run the anti-virus software, check and kill the virus, if there is a virus, restart the computer after the anti-virus, if it is not normal, it may be caused by the incompatibility of the device driver and the program, delete the graphics card, network card and other drivers, delete the driver and restart, if not, then rule out this reason.

Reason 3: Hardware problem: Disassemble the notebook to check whether the hardware is loose, generally the hardware is not plugged in well, there will be an alarm sound, the long sound continues to ring means that the memory module is not plugged in tightly, one long and one short means that the memory or motherboard has a problem, one long and two short means that the graphics card is wrong. If there is too much dust inside the notebook, it is best to clean it up first.

In addition, pay attention to whether it is caused by the new hardware, if it is normal before the replacement of the hardware, and it is not normal after the replacement, then check whether it is compatible. If it doesn't start at this time, it's best to send it for repair, and a professional will check whether there is a problem with your hardware one by one. Reason 4:

Display ProblemsIf the power supply** is working, but the screen is still pitch black, try connecting another monitor to your computer (you can borrow one if necessary) to make sure it's not a monitor issue.

The plug is a little scorched and cannot be used continuously, this kind of plug has been oxidized and cannot conduct electricity, and continued use may cause damage to the connected electrical appliances as well. The reason why the plug is scorched may be due to electrical failure, and the current suddenly increases during the working process to produce high temperatures. It could also be because of poor contact, the plug jack doesn't match.

When the plug is a little burnt, you can't continue to use it, because the plug will no longer conduct electricity after oxidation after being burned, and continued use may cause damage to the electrical appliances connected to the plug.

The reason why the plug is scorched may be because the electrical appliance is faulty, and the current of the appliance is suddenly too large during the working process, and the plug is burned by the high temperature generated instantaneously.

In addition, it may also be caused by poor plug contact, the plug and the jack do not match, when the plug is inserted into the jack and is still in the gap, it will also cause the heat to rise, and after reaching a certain temperature, it will gradually lead to the plug burning.

1. If there is a problem with the original adapter, which cannot be repaired or is too late to repair, you can use other adapters to replace it first, as long as the output voltage and power are roughly the same. The laptop is also supported by a voltage regulator circuit inside, so don't worry too much about the output voltage mismatch. And when it comes to repairs, the first step you need to do is to prepare the tools.

A multimeter, screwdriver, welding tools are required.

2. There are four plastic caps on the power adapter, so don't damage the adapter shell as much as possible, after the shell is damaged, there will be problems such as electromagnetic radiation strengthening, which will affect the stability of the machine. If the shell is damaged, try to repair it. If the external power supply does not supply power during the disassembly process, you can plug in the battery at this time, if the machine can start normally, there may be a problem with the power cord or adapter.

After opening the appearance and opening the shield, it is best to check the solder feet first, and observe them with the naked eye. It is then tested with a multimeter to find out if there is a problem with the power cord to simplify the repair process.

3. During the test, if you find that the resistor pin is soldered, then use a soldering tool to repair it, install the power adapter again, boot the test, and the problem is solved. It should be noted that if there is a problem with a capacitor during the testing process, you can buy a capacitor of the same model and capacity (** is about 5 yuan), and then weld the problematic capacitor down and solder the new capacitor on. If you find that there is a problem with the IC power chip, then you can solve it in the same way, of course, because the IC chip is definitely one of the most important electronic components in the power adapter, the capacitor is too complicated.

4. In the maintenance process of the optional power adapter, because the current power adapter has used a large number of SMD components, once the component has a problem, the difficulty of maintenance is even greater. The power of the power adapter is also increasing day by day, which is more and more the test of electronic components, if the quality of the electronic components used in the power adapter is not up to standard, improper PCB wiring, it is very likely to increase the probability of failure. Therefore, choosing a *** power adapter is very helpful for the stability of the notebook.

5. Check whether there is any problem with the capacitor resistance inductor, if the capacitor is bulging, it is best to replace it in time to avoid leaving hidden dangers.

The laptop battery is a lithium battery, and it's okay to play with it plugged in. Lithium battery please pay attention to the following aspects:

1. Lithium batteries have no memory effect, and there is no problem of re-flushing after discharge.

2. The main reason for damaging lithium batteries is overcharge and overdischarge.

3. The prevention of overcharging is done by the charger, the lithium battery is charged in the charger, and the charger will automatically stop charging after it is fully charged.

4. To prevent over-discharge, mobile phones, notebooks and other electrical appliances that generally use lithium batteries have this function, and the battery is about to run out, and the electrical appliances will automatically shut down.

5. You can't ignore it when there is no electricity, you have to charge it in time. Because the battery itself will have a small self-discharge, and the electrical appliances also have a very small load, in the case of the battery is not charged, although the discharge current is very small, the battery will be over-discharged and damage the battery, and most of the current lithium battery damage is due to this reason.

The materials used in the power adapter are relatively poor, especially the capacitors and resistors cannot be operated for a long time, resulting in damage.

The power adapter circuit design is not reasonable. The design of voltage conversion, frequency conversion, heat dissipation and other unreasonable causes damage to the firmware circuit after a short period of use.

There is a problem with the output of the adapter, which causes the line to be shorted and the adapter is damaged.

Either the line voltage is high, or the power adapter has been used for too long, and you should pay attention to maintenance frequently.

Normally, all components from 0V to 220V may be broken down by the current, resulting in burning...

It may be that the temperature of the laptop power supply is too high and the heat sink is not placed.

It is caused by a short circuit, this is a quality problem, or it is caused by improper use.

It's okay to buy a milliampere, the bigger the better.

1. Use a multimeter to check whether the socket is normal and whether the power supply voltage is 220V

If the mains voltage is abnormal, it is recommended to replace the use environment test.

2. Use a multimeter to check whether the output voltage and current of the power adapter are consistent with the labeled.

If the gap is very large and the mains voltage is normal, it can be judged that the power adapter is faulty and the laptop power adapter needs to be replaced.

3. If the above checks are normal, remove the laptop battery and do not connect an external adapter.

Press and hold the power on/off button for 5 seconds and repeat 3 times. After releasing the residual charge of the notebook, plug in the power adapter separately and power on for testing.

4. If the fault persists, check the power interface of the notebook to see if it is abnormal.

For example, looseness or cosmetic damage.

5. The above checks are normal, and basically it can be preliminarily judged that the notebook motherboard is faulty. It is recommended to send the service station for repair.