Laptop battery can not charge the battery must have broken it?

Laptop battery can not charge the battery must have broken it?

Laptop battery can not charge the battery Laptop Battery must have broken it? Read below, you should probably understand that a number of laptop battery can not charge causes. In this paper, however, the maintenance department is still a good way!

(In this province, the statement of the segment does not matter)

It so happened that Xiao Li a notebook in hand, needless to say, is definitely send over maintenance of the user do not know what the problem is still followed by go and see.



This notebook is SHARP, and rarely seen in China is estimated that people brought back from abroad. As to the question Han Well, Mike told me that this laptop battery not charging, and others customers have already replaced the battery, but still does not solve the problem, so Take over. And he said to a user or site readers that found in our Romanian workers IBM 92P1075 Battery in contact.

Hey, do not charge laptops, this problem sounds serious, although not delay use, but unprovoked into a mobile notebook PC, which makes things kinda depressed.

Alan told me: "Customers have had to replace the battery, prove that the problem is not something like that, and the notebook is also working properly, then there is only one conclusion is that notebook to charge the battery on the motherboard circuit that damage had occurred. Therefore, this case should apart repaired. "



Process does not elaborate on this, anyway, is what professional people do this, and not five minutes to do, remove the laptop's motherboard has come. We plug in this position, which is battery charging interface, of course, not connected to an external power supply if the case, where is the battery-powered IBM 08K8197 Battery interface.

Alan told me, "it typically does not charge the battery failure was more common, and resolve the problem started from the battery interface. First, take a look at whether the charging voltage output pin in the map should be the right place the first 1, most notebooks are 19V to the battery voltage is used to charge. "Here, Mike began to take multimeter measurement, the results showed that the pins have no voltage output.

"Since this is the case, we will test the battery charging circuit," said Xiao Li Here, the laptop's motherboard turned over.



This part is the battery charging circuit, and is on a photograph, the back of the motherboard, let's look at the parts inside a yellow circle. Here is a diode and a FET, Li was the first measurement of the diode and found that one end of the no-voltage, current in the diode that is truncated before. Well, next we must measure FET, that is, sinking a small 8pin new movie. Li was with the multimeter on a pass in the pin is measured is the amount of small new nor very clear IBM 08K8198 Battery about what the specific volume of the pin, but the conclusions come out soon, and the control FET and no voltage output pin. Alan told me such a conclusion is to explain the problem does not exist in the diode and FET place.

The next step is to test the battery charge control chips, and that is a red circle in the figure above components. Because the earlier measure current into the FET did not, so the possibility of charging chip damage is very great. After the results of measurements, and indeed the problem lies in here, the solution is relatively simple, is to replace a similar chip on it.

Oh, yes indeed forcing men are no weak soldiers, in my eyes appears to be a very troublesome problem, people only took 20 minutes to resolve, and could not help but I do not admire呀. I often think that when the Romanian workers if it is like one-month internship, and presumably will be soaring value of their own experiences of, ha ha!

As the saying goes: Learning without thought is desolate, think without studying is lazy. The problem is solved, but I still remember when the maintenance Xiao Li had told me before, like IBM 08K8199 Battery laptop battery not charging failure is more common, then why does this problem occur?

Li was grinning tell me: "In fact, there is nothing secret, nor is it caused by improper user. We all know that every time the battery charging and plug the process, will have a larger voltage, in the interface side is often will produce sparks, in fact, at this moment is very easy to bring the battery or the laptop motherboard injury. normally used laptop a long time, often after the swap the battery, there could be no question of charging the battery, while the components used, the quality of the motherboard The quality is also very critical issue. For instance this machine, under normal circumstances the instant charge may damage the motherboard high-current power IBM 92P1073 Battery supply line at the end of diodes, but do not know why this laptop Queba supply chips to the burned. Although the cause failure phenomenon is the same, but the maintenance cost is definitely improved. "

呵呵~, do not know if we do not understand, I understand anyway, and also because the users often will result in frequent-swappable batteries this failure. So I would like to advise those who have notebook users do not often repeated the battery removed, anyway, when the laptop is also possible to install the battery charge. So, do not use the battery unless it is a long time, otherwise IBM 92P1077 Battery it has been left alone in a notebook above the bar.