Tuesday, 26 January 2010

High quality and cheap laptop batteries from China

As we know China has become a place to watch for all things savvy.So many laptop batteries are made in china .such as HP laptop batteries.It easily qualifies as the country that is upfront in the manufacturing of all electrical devices of all kinds. Engineers in the country make a good percentage of the working population and this leads to the main economy driver and major exports being electronics. And their expertise is not limited to making of whole electronic devices but also replacement parts.

Dell Inspiron B130 Battery 6 cells 4400MAH

One of the maintenance parts that require replacing after extended use is the laptop batteries.Laptops being mobile computers feed on a lot of power and unless one of the main reasons for making a laptop is to provide extended use on the road, then battery life dwindles in an hour or two. With time the batteries wear out and they need to be replaced.

Manufacturers know this all too well and they usually tag high prices on HP laptop batteries and IBM laptop batteries since they know they are definitely going to get a market for them.

China is a technology hub and things like Dell or Acer laptop batteries retail for cheaper prices. These batteries can be sold in bulk or individually and needless to say, better prices are always scored when purchases are made in bulk. At this point another idea springs up. Why not sell cheap high quality replacement laptop batteries from China.

They say a business idea is only as successful and fruitful as you believe it to be. When you decide to sell u4873 battery there is the potential of making a good lumpsum in the end. Most people prefer laptops to desktop PC’s due to the mobility factor. And that means that there will always be a market for laptop replacement batteries now and in the future. A good percentage of people are unwilling to make the purchases from the manufacturer due to the high prices. It gets worse when the batteries are sold through a retailer since the price goes up another notch. All these people would be your potential customers and you would actually get to profit from the venture.

To guarantee the chances of you being successful, you need to make sure that you get the replacement laptop batteries from a reliable source. Despite the fact that you are buying cheap ones that does not mean that you should compromise on the quality that you go for. Quality really matters if you want to build a customer base. Go for referrals and read reviews of the best cheap high quality replacement laptop batteries wholesalers so you can choose and ultimately buy from the best.

Monday, 25 January 2010

Do not forget to take HP laptop AC adapter

All these gadgets will become useless if you forgot to pack an laptop AC adapter.If you are a frequent traveler, then surely you have to maintain a list of important things to be packed before the journey. You’ll carry your laptop, camcorder, and other electronic gadgets.

Hp 0950-3634 AC Adapter 60W 19V 3.16A 2-prong

Most importantly, it is essential to carry HP 0950-3634 adapter when you plan your business trips. Whether you’re looking for a replacement HP ac adapter, a spare, or an extra one for home or office use, this article will guide you in making your decision.
laptop ac adapter is used for providing low-voltage DC power to laptops via a DC jack. They convert the voltage to match the voltage requirements that allow your laptop to function. The HP 0950-3634 adapter allow you to continue your work without any interruption in the absence of a rechargeable battery.
You should be very cautious when you buy laptop ac adapter for your laptop. If you try to power your laptop using an inappropriate HP 0950-3634 adapter it will damage your laptop. There are three primary factors you need to consider before buying an HP AC adapter; namely voltage, tip polarity and tip size.
Voltage
The voltage output from the HP 0950-3634 adapter provides DC to power your laptop. If the voltage does not match the input current requirement of your laptop your laptop will not function properly. Both high and low voltage will affect the performance of your laptop.
Polarity
A power tip will normally have an inner and an outer conductor. The inner conductor may have positive or negative polarity. Based on the polarity you will need to carefully select a HP 417220-001 AC Adapter. If the positive and negative polarity is connected in the wrong way it will cause severe damage to your laptop. Most of the laptop AC adapters have standardized polarity symbols labeled on them, which helps you to buy the right adapter.
Tip Size
The size of the tip is always mentioned in the user manual that comes with your laptop. If the tip size of the HP AC adapter doesn’t match with your laptop, then it cannot be used.

Sunday, 24 January 2010

Disassembling laptop keyboard by yourself

May be you may ask those questions: How to disassemble a laptop keyboard? Can I take it apart and clean liquid spill? Is it easy to repair a damaged keyboard?

I’ve been getting these questions many times and today I show how to disassemble a laptop keyboard. You decide if it’s possible and easy or not.

By the way, in one of the previous posts I explain how to fix individual keys on a laptop keyboard.

I’m doing it for fun. I’m working on a damaged keyboard and have no intention to use it in the future.

First of all, you’ll have to remove the laptop keyboard.

For the keyboard disassembly I’ll be using one of my tools shown on the following picture.

STEP 1.

Remove sticky tape securing the keyboard cable to back of the keyboard.

STEP 2.

Part of the keyboard cable is glued to the keyboard. Carefully separate the cable from the keyboard.

STEP 3.

Start peeling off the aluminum protective film

STEP 4.

Remove the protective film.

After the protective film is removed it’s really hard to attach it back to the keyboard because it’s deformed.

STEP 5.

Most laptop keyboards have some kind of plastic separators.

These separators secured on the back of the keyboard.

Plastic pins are melted on the back of the keyboard and retain separators in place.

Push all plastic pins though wholes on the keyboard.

Start removing the separator.

The plastic separator has been removed.

STEP 6.

Now you’ll have to remove all key caps.

Before you start removing key caps, make a picture or xerocopy of the keyboard so you know the order in which keys are attached to the keyboard.

In order to remove the key cap carefully lift it up with your fingers.

Remove the key cap so the hinge underneath stays connected to the keyboard.

Some big keys have a different design.

In addition to the hinge, some big keys (Back space or Space bar for example) might have an additional support bracket.

Remove the key cap with the support bracket. As you see, the key hinge stays connected to the keyboard.

STEP 7.

Some laptop keyboards might have blank covers on the left and right sides from the up arrow key.

Lift up and remove the blank cover.

All keyboard key caps and plastic separators have been removed.

STEP 8.

Now you can start removing key hinges – key lifting mechanisms.

Carefully separate the key hinge from the keyboard.

Each key hinge has two parts – external and internal pieces.

When you remove the hinge, try to keep these parts connected to each other the same way they are connected on the keyboard.

If the external and internal pieces got separated, you can assemble them together.

On the following picture you see the lifting mechanism (hinge) assembled.

As I mentioned at the beginning, I’m taking this keyboard apart just for fun. That’s why I don’t care about removed parts.

If you following this guide to repair the keyboard, I would recommend to keep all hinges in the right order.

STEP 9.

The keyboard has two sheets laying one on the top of another.

Remove the sheet with silicone (or rubber) nipples.

STEP 10.

Remove the second sheet with traces.

Both sheets have been separated from the keyboard base.

STEP 11.

The sheet with traces has two layers and all traces are running between these layers.

STEP 12.

In order to access and repair traces you’ll have to separate to layers from each other.

The keyboard has been disassemble.

As you see it’s not easy to disassemble a laptop keyboard and even harder to put it back together.

Is it worth repairing? Probably not. These days you can find a brand new laptop keyboard very cheap.

If you successefuly fixed your keyboard, please share your experience! Let us know what was wrong and how you repaired the problem.

Friday, 22 January 2010

HP/Compaq Business NoteBook 6715B Battery charging problem

Today I got HP/Compaq Business NoteBook 6715B Battery for repair with the battery charging problem. It is a new model and we do not have a lot of experience with these laptops. The customer complained that the laptop will not charge the battery when it is plugged into the AC outlet.

HP/Compaq Business NoteBook 6715B Battery 6 cells 4400mAh

The laptop failure symptoms:

The laptop will not turn on when I try to start it from the battery. When the laptop is turned off and plugged into the AC outlet the battery charge LED doesn’t light up. I know that the battery is not charged and the LED should light up when I plug the laptop into the AC outlet. The laptop starts fine when it is plugged. When I move the mouse over the HP Power Icon in the lower right corner, the balloon will pop up and there is a line in there: Battery Remaining: N/A.

The problem repair procedure:

You can easily fix the problem just by updating the BIOS. HP says that the BIOS version should be at least v1.30. So, go to HP/COMPAQ website and click on Downloads. Select your laptop model and find any downloads for the BIOS. In the BIOS change history you will see the description of changes.

After I updated the BIOS, The HP/Compaq Business NoteBook 6715B Battery charging problem disappeared.

Thursday, 21 January 2010

How to buy a good laptop?

Nowadays,more and more people choose to buy laptops.But they have no experience to buy a good laptop. So I would to share some buying a good laptop tips with us.There are a lot of laptop buying guides designed to help an inexperienced user to buy the right laptop. Some of these guides are good, some of them are not. Here is a laptop buying guide I like because it”s written on people’s language and not designed to sell you anything. This guide explains the difference between a budget notebook, a mainstream laptop and a gaming laptop and what you should expect from your laptop.

Here’s another helpful laptop buying guide.

From myself I would like to add some hardware related details you should think of before you buy a laptop

Laptop AC Adapter.

Make sure to check the size of the AC adapter before you buy a laptop. Usually, you do not see the AC adapter before you buy the laptop and open the box at home. You’ll be very surprised to see that your AC adapter is half-size of your computer. I did this mistake when I bought Dell Inspiron 1525, The AC adapter wasn’t designed for a portable computer at all.

Volume Control.

If you like listen music a lot then you have to choose a laptop with some kind of a hardware sound volume control (sound volume buttons or sound volume wheel located on the laptop). I prefer a volume wheel like on most Toshiba laptops. The volume wheel gives you almost instant access to the sound level. If you do not have a hardware control, then the only way to change the sound volume is through the software settings; it takes some time.

Sound System.

This is again for music lovers. Make sure to find a laptop with a good sound system. In my opinion, Harman/Kardon system is one of the best. I have Harman/Kardon speakers on my HP pavilion dv60000us and the sound is awesome. Sound on my Sony Vaio laptop sucks!

Laptop Memory Location.

The system board is one of the most important and most expensive parts of a notebook computer and you will get an advantage if you know what kind of the system board installed into the laptop. Some modern notebooks have memory integrated on the system board and offer only one extra memory slot to expand the memory size in the future. If onboard memory goes bad, you have to replace the entire system board. It’s OK if your laptop is still under warranty, but what if you have to pay cash for the repair? Also you cannot upgrade onboard memory. Other type of system boards do not have onboard memory, instead offer to you two memory slots on the system board. You will have to replace only the memory stick if it goes bad. System board with 2 memory slots usually can accept up to 2 GB of memory (1GB memory stick in each slot). So, if you plat to upgrade your laptop in the future, make sure that your laptop has both memory slots available for upgrade. Ask a sales person for details.

USB Port Location.

Check how USB ports are located on the laptop. If you plan to use USB devices like a wireless mouse, a flash drive or an external USB hard drive, then it would be nice to have couple USB ports on the side of your laptop not only on the back. Some laptops do not have USB ports on sides and to connect an USB device you have to turn the laptop.

Make sure that USB ports are not located too close to each other. Some older USB devices are big and when you plug it into one USB port, the second USB port becomes unusable.

Keyboard.

If you are a network administrator or have a job related to networking, then probably you use Windows run box a lot. To access the run box in Windows you use a shortcut (Windowd Key + R button). On some keyboards the Windows Key is located in the lower left corner, so you can use one hand to start it. On some keyboards the Windows Key is located in the upper right corner and to start the run box you have to use both hands. Choose the right keyboard for you. For some people it’s not a problem at all, but what if you use this shortcut hundreds times a day?

Parallel Port.

Very often this option is overlooked. If you plan to connect a printer to your laptop via a parallel port then you have to find a laptop with this option. Many modern laptops are designed for modern USB printers and they do not have the parallel port at all.

Laptop Warranty.

If you think that notebook computers do not fail or they fail only during the first year of exploitation, think again. In my opinion, an extended 3or 4 years warranty is a must for any notebook computer. For example I’ll give you approximate prices for some Toshiba Satellite A75 laptop parts if you decide to repair it in Toshiba Repair Center.

System board – from $400

LCD screen – from $550

Pentium CPU – from$300

CPU cooling fan – from $80

Keyboard- from $70

Do not forget to add labor charges -� from $60/hour

Laptop hardware is very specific such as hp dv8000 battery and you can just buy it in any computer store or online shop udtek.com

After you reading this article,may be it’s will give you a good suggestion.