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July 29 2011 5 29 /07 /July /2011 10:12

Laptop "keyboard failure" usually because the circuit board or a conductive plastic on the dirt, making between the two can not properly connected. But does not rule out other factors, such as the keyboard plug is damaged, circuit problems, damage to the motherboard, CPU is not working properly, etc., but not the main reason. Therefore, we can only work for descaling. 

The steps are as follows: 

1. Open the keyboard. Note that when you open the keyboard, be sure to button surface (that is, our operating side) down, board up, or conductive plastic on each key would have come off, you repair trouble. 

2. Open circuit boards, circuit boards are generally made of soft plastic film, is inscribed with key cable, preferably with a concentration of alcohol in 97% cotton (75% alcohol cotton can, because I had used However, it is best to use high concentrations of alcohol, cotton) and gently scrub two times in the circuit board. Key part of the line for the failure to take care of more than a few times. 

3. View key failure part of the conductive plastic, if the above accumulated a lot of dirt, the same use of alcohol scrub. Assuming conductive plastic is damaged, then I suggest you can not key on the conductive plastic used for the damaged part, although this "shattering" initiatives can not play all the Toshiba laptop keyboard functions, but the most at least you can extend the life of commonly used keys. 

4. Corner of the keyboard clear of dirt, brush tool available, small brush, etc., but to pay attention to some of the action should be gentle. 

5. Check whether the module is soldered or welded sealing off, you can repair welding work (using conductive silver paint and other tools, please refer to the following section the specific repair laptop keyboard repair instance). 

6. Installed keyboardIt should be noted here that we have to wait for alcohol to evaporate before

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July 28 2011 4 28 /07 /July /2011 11:42

 

A new Laptop battery comes in a discharged condition and must be charged before use (refer to the devices manual for charging instructions). Upon initial use (or after a prolonged storage period) the battery may require three to four charge/discharge cycles before achieving maximum capacity.

When charging the battery for the first time the device may indicate that charging is complete after just 10 or 15 minutes. This is a normal phenomenon with rechargeable batteries. Remove the battery from the device, reinsert it and repeat the charging procedure.

It is important to condition (fully discharge and then fully charge) the battery every two to three weeks. Failure to do so may significantly shorten the battery's life (this does not apply to Li-Ion batteries, which do not require conditioning). To discharge, simply run the device under the battery's power until it shuts down or until you get a low battery warning. Then recharge the battery as instructed in the user's manual.

If the battery will not be in use for a month or longer, it is recommended that it be removed from the device and stored in a cool, dry, clean place.

It is normal for a battery to become warm to the touch during charging and discharging.

A charged battery will eventually lose its charge if unused. It may therefore be necessary to recharge the battery after a storage period.

The milliamp-hour (mAH) rating of the Hi-Capacity?battery will often be higher than the one on the original battery. A higher mAH rating is indicative of a longer lasting (higher capacity) battery and will not cause any incompatibilities. A Hi-Capacity?battery will, in most cases, outperform the original by 30% to 50%.

Actual battery run-time depends upon the power demands made by the equipment. In the case of notebook computers, screen brightness, the use of the CPU, the hard drive, and other peripherals results in an additional drain upon the Laptop battery, effectively reducing the laptop battery's run-time. The total run-time of the battery is also heavily dependent upon the design of the equipment. To ensure maximum performance of the battery, optimize the computer's power management features. Refer to the computer manual for further instructions.

 

Battery Don'ts:

Do not short-circuit. A short-circuit may cause severe damage to the battery.

Do not drop, hit or otherwise abuse the battery as this may result in the exposure of the cell contents, which are corrosive.

Do not expose the battery to moisture or rain.

Keep laptop battery away from fire or other sources of extreme heat. Do not incinerate. Exposure of battery to extreme heat may result in an explosion.

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July 28 2011 4 28 /07 /July /2011 03:25

How maintenance Dell laptop battery should be right?This problem has plagued many loyal users of laptop computers, including me.

After reviewing some information, the opportunity recently consulted a professional in the electrochemical PhD and a well-known domestic battery, deputy director of the Institute. Now a number of recently acquired knowledge and experience to write out, to satisfy of you readers.


And deep charge-discharge lithium-ion battery can improve the actual capacity?

Experts clearly told me that this is meaningless. They even said that the so-called three times before use full charge and discharge of the "active" in both of them, Dr. knowledge in, could not understand what this is necessary. Why do so many people, however, after the deep charge-discharge capacity Battery Information in the label will change it? Will be mentioned later.

Notebook computer lithium-ion batteries are generally with management chip and charge control chips. Management chip in which a series of registers, there is capacity, temperature, ID, charge status, discharge frequency values. These values ​​are in use will gradually change. Personally, I think, in notebook computers for use in "one month after the full charge and discharge should be a" major role in the practice should be the correct value of these registers in the wrong, making the Dell laptop battery charge control and battery nominal capacity consistent the actual situation.

The main charge control chips control the battery charging process. Lithium-ion battery charging process is divided into two phases, constant current fast charge phase (the battery indicator light yellow) and reduced voltage current phase (the battery indicator light flashes green. Constant current fast charge phase, the battery voltage gradually rises to the standard battery voltage, then under the control chip into the constant voltage phase, the voltage will not rise to ensure that no over-charge, current battery, along with the rising gradually weakened to 0, and the final charge.

Statistics chip power consumption by recording the discharge curve (voltage, current, time) can calculate the sample battery, this is what we read about in the Battery Information wh. Value. The lithium-ion battery in the repeated use, the discharge curve may change, if the chip has been no opportunity to read a complete discharge curve, the calculated power is not accurate. So we need to calibrate the battery charge and discharge of deep chips.

Finally, my battery maintenance view is:

1. No need to make sure that each time a release is finished re-charge;

(2) a period of time to do a protection circuit placed under the control of deep charge battery to correct statistics, but it will not improve your battery's actual capacity.

3 long-term without the battery, should be a cool place to weaken its own internal passive reaction speed.

4 protection circuit is also able to monitor the laptop battery self-discharge, long-term without the battery, the battery must be filled to prevent the battery self-discharge in storage in the discharge of excessive lead to excessive damage.

In fact, the battery is not too much to take into account the use of attention, in other words is taken into account there is not much use. How many times a cell can use, perhaps more from differences in the manufacture of the battery itself, the individual differences, rather than use. Choose a good reputation notebooks, battery life is undoubtedly the future of long life protection.

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July 27 2011 3 27 /07 /July /2011 03:52

For the laptop, the battery life is short has become a consumer recognized "common problem." Resulting in Dell Inspiron E1505 Battery life in battery mode, there are many short time, then early in the purchase and use, we should all learn from what has been, and prior to avoid it?

As we all know, even if you just give the laptop screen brightness up a bit, plus a memory expansion card or plug in a mouse or something, will shorten the laptop in battery mode of life, so it is realistic to say: laptop battery life issues will always become the helpless, because at least in the short term there will be no qualitative change, then we really do anything? only watch had only 3-5 hours of battery life reduced to a two hours? The answer of course is no.

First of all, unless is a must, otherwise we try or not to use the laptop battery mode, it is best to use in the city environment, especially for a prolonged use of laptop computers for people who work, not the expectation Hp Pavilion DV2000 Battery will give you a little convenient, even if your notebook's battery life eighty-nine hours or more.

Second, if, under the battery mode, it is best not to use too much or notebook computer peripheral functions, such as the environment or if conditions allow, the best display's brightness to the minimum, unplug the mouse Use the touch pad, built-in network card or sound system off, etc., in short, to do to maximize battery life, must be "sacrifice", although this time using the laptop a bit painful.

The final step is to give your laptop to prepare a two backup batteries, this battery life for those who often work with people, is the most sensible and effective solution.

Existing Hp Pavilion DV6000 Battery technology product context, to obtain longer life time is still a dream, especially when the lithium-ion battery technology products still dominate, but did not enhance the quality of life under the premise of laptops battery life on a wide range of "breaking ten (hours)" The road is still far away.

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July 26 2011 2 26 /07 /July /2011 11:17

Fn key is a combination of laptop-specific keys, which itself did not use, need and other function keys together to quickly change the operating characteristics of each brand has different types of computers, specifically listed below.
Lenovo is a combination of keys on the Lenovo Laptop keyboard are marked with blue, the specific role is to:
Fn + F1  not enabled
Fn + F2  not enabled
Fn + F3: turn off the computer monitor to keep a black screen. To turn on the computer display, press any key or press the TrackPoint pointer. If the AC adapter to the computer, or detach from the computer, you can turn on the computer monitor. This function first in order to save power, particularly battery-powered, the second is to extend the life of the LCD screen.
Fn + F4: the computer is in standby mode. To return to normal operation, press the Fn key alone, without having to press the F4 key. (Formerly the Windows 95 and Windows NT in this way is called suspend mode), in which case, just turn off the monitor and hard drive, there are still power consumption, more suitable for a short time (two hours or less) does not using a laptop case.
Fn + F5: Enable / Disable wireless network equipment and computer built-in Bluetooth.
Fn + F6 is not enabled
Fn + F7: LCD in a notebook. Connected to an external monitor (or projector) or both simultaneously displayed on the output of the first press this key combination will display from the laptop LCD screen to switch to an external monitor, the second Press key combination can also appear in the notebook LCD display screen and external monitor, press the third key combination switches the display to turn on the laptop LCD screen, which rotate in the following three ways: external monitor (or projector) == "laptop LCD screen and external monitor (or projector) ==" laptop LCD screen. When the notebook LCD display screen and external monitor on a different desktop images, or two in some cases, the same desktop image on the screen but the system were two of the screen refresh rate control, does not support this feature. Hubei, China notebook forum
Fn + F8: If the notebook LCD screen is not full screen, this key combination can be extended to switch between normal mode and the computer screen size. (Note: Windows 2000 and Windows XP does not support this feature)
Fn + F9 Settings: User can configure the Fn + F9 function key options
Note: This feature only supports Windows 2000 and Windows XP systems;
Fn + F10 is not enabled
Fn + F11 is not enabled
Fn + F12: will the computer in sleep mode. To return to normal operation, press the power button for less than 4 seconds. Using this method, you can completely turn off the computer without having to exit the application or save the file. When the computer goes into sleep mode, all open applications, folders and files can be saved to the hard disk turn off your computer. In Windows 2000 and WindowsXP using Fn + F12 to enable the hibernation mode, the computer must be Lenovo PM device driver. If you use a notebook every day, it do not work when it shut down the computer using this key combination, can hold the previous day's work status.
Fn + Home: adjust the screen brightness.
ThinkPad LCD screen brightness sub-seven, each time increasing the brightness level to maximum brightness after the stop;
Fn + End: is corresponding with the Fn + Home key, each time reducing the brightness level to the lowest brightness stop. Adjust the screen brightness is mainly to save the battery power supply.
Fn + PgUp: ThinkLight lights on the key, press the Lenovo Laptop keyboard lights turn on, press off.
Fn + Spacebar to enable full-screen magnification
Fn + NumLK enable the numeric keypad
FN + Up Arrow: equivalent to pressing the Page Up key
Fn key lock function: the equivalent of holding down the Fn key and go to press a function key. In the ThinkPad Configuration program, click the Accessibility Option button
The Fn key lock function is set to Enable. Or command line mode by PS2 FNS E command can also enable this feature. If the Fn key is not locked, when in use must hold down the Fn key and then press the other function, to accomplish a specific task.
If the Fn key lock is enabled, you can use the following functions:
Press the Fn key click, and then press a function key on Lenovo Laptop keyboard; this is equivalent to hold the Fn key, then press a function key.
Next time you need to use Fn combination keys, they still need to press the Fn key.
Press the Fn key twice, then later you do not need the Fn key, the user can press a function key combination to achieve the Fn function key operation.

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July 26 2011 2 26 /07 /July /2011 03:01

1. to avoid high temperature
Some friends think that the batteries do not give up on one side as far as possible, or not to pull the power plug, so you can directly reduce the charge and discharge times, to achieve the Dell laptop battery's "longevity." In actual fact, the relevant professional tests, we can find that the Dell Laptop battery capacity due to their own and the surrounding temperature is too high and secretly slip away Oh!
Test, 100% charge state of the battery temperature can reach 60 ℃, long-term maintenance of this state three months after the battery capacity fell by 40%. Undoubtedly, the high temperature accelerated the decline in battery capacity, so we at room temperature until the battery is fully charged, unplug external power supply as soon as possible to reduce the temperature of the battery itself, to avoid excessive loss of battery capacity.

2. Mo exhausted
Because lithium-ion battery memory effect small enough to be negligible, so their damage is not too great charge halfway. In contrast, BIOS and external discharge light bulbs and other over-discharge (full discharge) method, tested harmful. In general, the lithium ion and lithium polymer batteries do not have to wait until the big friends go at 0% charge.

3. anti-high
In addition, the process of Hp laptop battery is also particularly important to stabilize the voltage. Users should avoid the notebook's power adapter and power appliances (such as air conditioners, refrigerators, washing machines) connected to the same outlet.
The reason is simple, high-power electrical appliances on or off instantly when the pressure will form and lead to damage to the battery, so thunderstorms should also try to avoid charging the battery. Optional conditional friends UPS devices (uninterruptible power supply, can provide sustained, stable and uninterrupted power supply), allowing users to have plenty of time to cope with a sudden situation.

4. charge and discharge method
Front of the charge and discharge method, mainly for users who frequently use the laptop battery. Office of the white-collar workers and some imprisoned, but more often work directly with an external power supply. But the front said, the laptop battery when not in use will appear consumption, and its power consumption without knowing the level of indiscriminate charge, with small series that might as well consider the battery to change the threshold to extend its life.

Threshold, a field or the boundaries of a system known as the threshold, its value as threshold. Charge threshold that we set their own starting and ending point of the charge in the external power supply constantly open the case, the battery remaining capacity will be based on the situation to start or stop charging.
In general, long-term use of Acer laptop battery cases, battery charging start value should be set to 96%. Because the battery is fully charged due to the phenomenon of self-discharge, the battery capacity fell to 96% normally required for a lasting about 50 days or so, just about equal to half of each discharge and charge order interval.

But if you often need to live in the office and equipment back and forth between the AC adapter and battery-powered switch frequently between the words, you should start value is set to charge 6%, reduce the charge can be avoided with increase the number of charge cycles, and shorten the life of the battery.
Note:
1. charge threshold, or only comes later in the installation of the battery management software, operating conditions and effective;
2. charge-termination charge than the initial percentage of the high percentage of at least 4%;
3. due to battery aging, generally charging threshold set higher than the ideal value of 2%;
4. when the charge to stop a percentage less than 100%, please once every three months on 100% battery charge (usually try to avoid the battery is fully charged and fully discharged).
Routine Maintenance Tips
1. regular defragging
Regularly defragment the hard disk can improve file access speed, will to some extent, extend battery life. Of course, the defrag in the case of using AC for yo! At the same time, defragmentation is not for the hard disk light on the torture, so the refresh rate is best once a month.
2. dim your display
Currently, the dominant use of the LED and LCD display, LED low power consumption characteristics of their own, I believe the next will soon become the mainstream notebook display selection. But even if the LED LCD, its power is still there, so dim the display properly on in life as well as eye protection point of view, are very helpful.
3. shut down some background programs
Since many users do not want to be "superfluous" to open certain programs, so whether or not often use that are often set it as the default boot entry. In fact, these "extra" programs are quietly carving up battery power. Small lithium charge is not easy, we still good to her little, ha ha!
Well, more approachable method of
Dell Laptop battery maintenance of the basic divisions in the paragraph here. There may be a friend asked: "Why do the most basic, the method to correct the BIOS did not mention it?" The interpretation of this small series, this is not self-denigration that users can not learn, but at heart felt that "excessive" maintenance of little significance.
The original is a faster replacement notebook technology consumables, such as to comply with requirements of the times, a little also requires the user must have two or three years can tolerate. As for the books enthusiasts, the event will short more tolerable not to mention.

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July 25 2011 1 25 /07 /July /2011 06:01

U.S. Consumer Product Safety Commission (CPSC) today said that because of overheating and cracking problems that may cause fire and injury caused to consumers, HP has once again recall 160,000 laptop computer batteries.

In this regard, HP said, with the U.S. Consumer Product Safety Commission and other security agencies in charge, HP announced the HP laptop for some number of Hp Laptop battery packs used in the implementation of the voluntary recall and replacement program.

HP said in a statement, urged customers to visit the Web site (http://bpr.hpordercenter.com/HBPR/CN-zh/Default.aspx), verify whether their computer models to recall the list, and the computer uses a Hp Laptop battery pack whether the actual affected. Affected by the plan for HP customers will be eligible and have been proven for each recalled battery pack to obtain a free replacement battery pack.

Hp Laptop battery manufacturers that from July 2007 to May 2008, products manufactured by Hewlett-Packard laptop-specific battery may cause consumers to potential safety hazards. These batteries may overheat, resulting in a fire or burn hazard. "We took this measure as part of our commitment that our notebook customers the highest quality of service, we take the initiative to inform you that this issue and verified ready to replace all the affected batteries." HP's official statement said.

It is reported that HP's May 26, 2011 recall program is May 14, 2009 and October 15 and May 19, 2010 announcement of the expansion. May 2010 and May 2009, Hewlett-Packard has recalled 5400, respectively, and 70,000 notebook computer batteries, but this will have further expanded the recall of 162,600 laptop batteries into the recall list.

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July 22 2011 5 22 /07 /July /2011 03:26

Microsoft recently released a new 14-page whitepaper entitled "Windows 7 Power Management" to outline the power management technologies in Windows 7 that reduce power consumption. For those curious as to how exactly Windows 7 will use less power, this is your answer.

The Redmond company is providing customers with a Fix It download via its Microsoft Support website, designed to make their laptop batteries live longer.The solution works for Windows 7 machines, but also for computers running earlier versions of Windows.

Users need only visit the “Fix power consumption problems and extend the laptop battery life” webpage, download the Fix It troubleshooter and launch it on their Windows laptop.

“Automatically detect system settings that can affect power usage, such as timeout and sleep settings, display settings, and screensavers, and restore them to their default settings,” the Redmond company reveals.

Some customers might already be aware of the fact that the manner in which their machine is set up has a direct impact on power consumption and battery life.

The Fix It troubleshooter is designed to automatically identify problems and set up Windows 7 laptops per the best settings to extend laptop battery life as much as possible.

The software giant provided the following list with the issues that this Fix It solution resolves:

“- The period of time before the computer goes to sleep is set too long

- Screen saver is used instead of setting the computer to enter sleep mode

- Display brightness is set too high

- Power plan is not set to the most efficient power plan

- Wireless adaptor in not optimized for power saving

- Minimum processor state is set too high.”

I think it’s obvious that while some of this settings can be set manually by the vast majority of customers, there are also a few which are a tad less user friendly.

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July 20 2011 3 20 /07 /July /2011 04:35

cause damage to the battery

One of the biggest challenges laptop owners have is extending the life of Acer Laptop Battery. The batteries of HP laptops are generally long-lasting, but battery life will also depend on how a person uses his computer. An effective way of improving the condition of laptop batteries is recalibration. This is a must especially when the duration of your battery life has gotten shorter after a few months or years of usage.

the battery refresh program to restore the battery discharge time

Big brand laptop has a battery refresh program, we can use it to repair the battery. Example: notebook computers, the nickel-metal hydride battery with (Ni-Mh) batteries, as usual discharge properly, causing the battery discharge time is short, only less than 5 minutes, if carrying a laptop to work, the it is very inconvenient, what can restore the battery discharge time?

For the above, we can use the official website has launched a laptop battery refresh program to refresh the Acer Laptop Battery to discharge recovery time, as follows.

(1) the use of AC power to the laptop, the first official website to download to a laptop refresh program.

(2) Restart your computer, press F8 to enter boot menu and select safe DOS mode.

(3) into the directory where the file you just downloaded, perform a battery refresh program, reading the warning message, insert the floppy disk as required, and then press the Enter key to execute the self-extracting operation.

(4) boot the computer with this floppy disk, a message appears on the screen.

(5) Follow the prompts to unplug the AC power, the program will automatically Ni-Mh battery discharge, the discharge is completed, the system will automatically shut down.

(6) The battery temperature is high at this time, should not immediately start, let the battery cool for a while, plug the AC power.

(7) Boot the computer with a floppy disk, the file will automatically run the refresh program, and asks the user whether to proceed.

(8) At this point, the program began to refresh to refresh the battery, the process soon, when the returns to the DOS prompt A:> when that refresh is complete.

(9) Turn off the computer and charge the Acer Laptop Battery until the light turns green so far.

(10) The above procedure was repeated three times to get the best results.

In addition, many lithium battery pack failure is the result of a failure of energy-saving core, this phenomenon can not be avoided. Because each cell batteries can not be exactly the same nature, with some slightly lower quality long after the beginning of aging, and damaged the whole (the series after) the discharge curve. Interest and ability of the reader can try to open the battery pack in the multimeter's help, you can quickly find the damaged batteries (abnormal voltage). If conditions allow, according to the corresponding parameters of batteries can replace the qualified product.

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July 18 2011 1 18 /07 /July /2011 04:20

Laptop playing for many years, access to the machine is not small, a lot of experience, the other does not show oneself in front of the master. Today is to remind everyone to ignore a problem, the Dell Laptop battery consumption.

Damage to battery operation you look it on the Internet more, nothing more than conventional

1, the regular charge and discharge
2, use inferior charger
3, high-temperature environment for a long time operation
4, the battery is connected with high load peripherals plug is not standardized.
5, the transition charge and discharge (now has a protection circuit, but the occasional occurrence)
Today I wish to highlight that, and the most do not pay attention to the point:

On the bed, sofa and other media not to take the air using the contact is very, very easily lead to cell loss, this is the moment of injury, usually resulting in cell loss, but a few percent to more than a dozen, but it is the small errors, damage began, had to use 2-3 years the battery may want to change the batteries a few months it becomes a (severe cases).

In order to verify his guess, Dad just bought a new laptop, use this to test (because there are bad battery warranty ah).

Boot the machine with less than a month, check the battery, loss 0%

So the first night, full of power, play movies on the bed pillow, for fear of "the consequences are too serious harm to other parts of the" blank space for a little heat, about 2 hours later, the machine is not too hot. Once fully charged, a check, all right Oh.

Is it likely the problem, did not give up the next day to continue to try, but also two novels, a check or nothing.

Well, not special blank position on the third day heat, the laptop on the bed as normal. We guess what the result? Finally met, loss of 11 %.....

At this time, do not know is excited or worried about, in addition to immediately prepare the warranty card (of course tomorrow to repair you). Another is that some people will pay attention to the effect that is not fully closed (or closed lid standby mode) on a bag , I also tried once, the machine heat death, but fortunately not bad, but the battery definitely suffer. I can not wait to put these issues reflected. Many experts may disagree, although many manufacturers use the note reminds notebook cooling problems, as it will cause crashes or hardware problems,

And on the bed with or package is not put off the problem indirectly by heat, but did not specify.

I summarized from

1, on the number of poor conductor of heat on the use of laptop (such as the bed of towels, pillows),

2, is not completely shut down on a bag, laptop continue to work, heat, but the bag is unable to drain away the heat.

Laptop heat may not lead to crashes or hardware failures, but the Dell Laptop battery has been given in an instant loss of the. And according to my experience, the probability is very high.

The extent of loss and exposure to media, is close to the battery position, the heat situation, but denied that this behavior does not cause the battery to a very high probability of normal wear and tear, and this is our habit of using one.

Perhaps there are some laptop users are beginning to understand why the laptop is still quite common to use attention, but the new battery or loss quickly. Some because it is over the 2 years, so that is normal.

In fact, recall, the real beginning of a particular loss is not normal use.

I write not to be alarmist, on the one hand is used to remind you note, to refrain from corrupt temporary convenience (especially the girls, they do not know most of depletion of the battery, just do not know why the shorter the more you use laptop battery. )

Attention to what other manufacturers also hope, with special techniques to test, if indeed there is the risk (probability problems), to remind consumers, the use of which mention the battery is also a good protection, the Dell Laptop battery can be used longer (a little less batteries) is also a little contribution to the earth bar.

If you have the same experience or different views, welcome to explore.

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