Q:(19v, 3.74A) power adapter to charge the notebook, the first charge for 10 minutes, the second charge for 20 minutes, the results of a black screen can not boot the notebook , The power adapter is also broken, I then use a good power adapter to charge the notebook, the adapter lights flash, and some master said the notebook motherboard may be broken, I would like to ask what is the reason why the notebook can not afford machine, if Is the motherboard burned out, that in the end is the power adapter burned to the notebook motherboard to burn out, or laptop motherboard short circuit to the power adapter to burn out? Thank you, everyone gave me an answer, I took all my points out

General such a problem is the laptop motherboard circuit and the cathode 19v short circuit caused. The power adapter is not good quality will burn the notebook. In fact, this problem is still a good solution. Repaired between 180-260. Specifically have to see that short circuit. You put the battery out of power to try to see what reaction. If not enough, then the motherboard is short-circuit, and only to repair.

Q:Is the power adapter powered up or powered by a laptop? Why is this used? The Is the laptop adapter in the absence of computer power is not?

Now the notebook is generally lithium batteries, in fact, is a shell installed in a series of battery pack. Specific maintenance methods can refer to mobile phones and digital cameras, DV and other battery maintenance methods. If the long-term use of electricity, it is recommended to remove the battery after the use of power. It is said that the battery is in a semi - saturated state and is good for the durability of the battery (my SONY camera manual is so recommended.

Q:Notebook can not be turned on The power indicator does not light The power adapter light flashes Lenovo notebook

Very sure to tell you, the motherboard short circuit. I professional notebook motherboard chip-level maintenance.

Q:As if the output are rated voltage rated current without affecting the use What is the principle of this? What circuit is used to achieve?

Because it is wide voltage equipment, so it can be used

Q:Laptop power charging interface is not appropriate, with a laptop power adapter adapter?

2, the current enough. The output current of the power supply can not be lower than the current of the appliance.

Q:My Dell laptop power adapter is broken, go to the repair shop with the results they gave me a Lenovo do not know can not be universal? Will it cause damage to the machine? Thank you which experts can point one or two

See the output voltage with the current, what 19V, 3.42A; 20V, 3.42A; 19V, 4.74A! The There is a label on the computer, and then there are also batteries!

Q:Laptops (how to turn off the network adapter off)

Did you make it? I have banned it tonight. Now do not know how to do it.

Q:I am a novice to say the more detailed the better The positive pole is inserted into the hole

It is very simple to see your multimeter is a number or a pointer as long as the transfer to the DC file can be DC file symbol is the size of the DC stalls General election 50V on the OK or 20V Note multimeter multimeter end of the pen do not insert the wrong black pen is a Red table pen is transferred to the stall just said the test can be tested,

Q:Power adapter is broken, the Internet bought a new, what parameters are the same as the original, but the input current is different. Original is 1.6A, the new is to buy 2.4A, the other is the same, can I use it? Long-term use of the notebook there is no harm? Also, the seller sent the power cord inserted in the socket with a spark, and the spark is not small, but if you use my original line to connect to the new power supply, and then plug in the socket on the no spark, the seller said that this is because the original The power cord is copper, more expensive, he sent the cheaper, so there are sparks, and the input current than before no big relationship. I would like to ask is not like the seller said this. Thank you!

It is best to reduce the number of plug the power cord, it is recommended to use the kind of plug with a switch, run out of the computer can be directly off the plug inserted on the switch to power. Thank you! Hope can help you.

Q:My notebook is Toshiba, the original adapter is 19V 3.95A, on the school forgot to take home, and then my mother to the outside of the shop borrowed a 19V 4.74A, the output current of 0.79 amps, I On Saturday with a few hours a week do not have to go to school at night to stay, may I ask this will be affected? I said that as long as the voltage on the Internet that does not matter, and some say that the current will burn the main screen too much, in the end? Put away

To the computer city to buy a new non-original adapter 100-150 block, buy the time to bring books and bad adapter, talk about the warranty period, open a good invoice (at least receipt). The adapter does not need to buy the original, as long as the voltage and current on the line, after all, the technical requirements of the adapter is not high. It is necessary to use 3.4A (voltage must be the same as the original), when used as far as possible not to external equipment, the battery won, do not use the side of the charge, the cpu automatic frequency conversion function to open up, do not play games, three-dimensional design , In short, can be used but the limit is quite big.