Showing posts with label consumer electronic. Show all posts
Showing posts with label consumer electronic. Show all posts

Sunday, 7 February 2010

My Dell laptop has a power problem

My Dell laptop has a power problem.

The Dell Precision M20 Battery stops charging when I move the power cord on the DC adapter. When I start moving the cord left to right, the power LED light on the front goes on and off and the battery charge LED goes on and off too.

I removed the precision m20 battery and tested the laptop again. The laptop starts fine from the DC adapter when the battery is removed, but as soon as I start moving the power cord the laptop shuts off. It looks like the laptop looses power immediately.

If you have a problem like that, most likely it’s related either to the power adapter or the DC-IN power jack.

First of all, I tested the laptop power ac adapter with a multimeter. The power didn’t cut off no matter how badly I moved the cord. The power adapter output voltage was 15.45VDC all the time. That means there is nothing wrong with the power adapter and most likely there is a problem with with the power socket inside the laptop.

Now I’m going to test the power socket inside the laptop.

In order to access the power socket I had to disassemble the laptop and remove the top cover assembly with the display.

You can find disassembly instructions for many HP, Dell, IBM, Lenovo, Sony and Toshiba laptops in these service manuals and guides.

In the laptop I was fixing (Tecra M2) the power jack is attached to a DC-IN harness and this harness can be unplugged from the motherboard.

As you see, I removed the DC-IN harness from the motherboard, plugged in the power adapter and tested continuity with my multimeter as it shown on the picture.

When the power cord is still, the voltage output is 15.45VDC, the same as on the plug.

But as soon as I start wiggling the plug inside the jack, the power cuts off and voltage goes to 0. It means, the power harness is bad.

The problem was fixed after I replaced the defective DC-IN harness with a new one.

In some laptops the power socket (DC jack) is soldered to the motherboard.
If the battery stops charging when you wiggle the power plug inside the jack, either you have a bad power adapter (test it with a voltmeter) or the power jack is broken or loose.

You cannot simply unplug the jack and replace it with another one. You’ll have to unsolder the old jack and solder a new one back on the motherboard as I described in this post.

If the power jack is not broken but loose (not making good contact with the motherboard) you can resolder the old jack without replacing it with a new one.

If you want to buy a new one,you can see more information from http://www.udtek.com

Thursday, 4 February 2010

Where to buy Cheap Dell Precision M60 Battery 9 cells 6600MAH

Dell Precision M60 Battery 9 cells 6600MAH

Dell Precision M60 Battery

Dell Precision M60 Battery 9 cells 6600MAH Description:
Voltage: 11.1V
Capacity: 6600mAh
Type: li-ion, 9 cells
UL certificated cells inside!

Fit Laptop Model:

Dell Precision M60 Mobile,Dell Latitude D800 Series,Dell Inspiron 8500 Series,

Dell Inspiron 8600 Series Workstation.

Fit Laptop Part:

01X284,2P700,310-0083,312-0083,312-0083,312-0121,312-0195,451-10125,

451-10130,451-10151,8N544,BAT1297,W2391.

Extend Battery Life:

1. Turn the brightness level as low as you possibly. Laptops always come with the ability to select the brightness level, some even could modify CPU cooling performance, switch down to lowest level will enable you squeeze out two times longer Dell Precision M60 Battery 9 cells 6600MAH life than the situation working in the highest level.
2. Shut down programs running automatic. Some of the programs we won’t to use startup in backgroud when you start you OS, like QuickTime, Desktop Search. When expand your taskbar, you can see and shutdown them, but there are also some process invisible in most cases. They consume your laptop computer resourse and Dell Precision M60 Battery 9 cells 6600MAH slowly, press “Ctrl” + “Alt” + “Del” to open your tasker manager and halt the process not necessary.
3. Unplug external devices. Normally device, your mouse, and the most power consume device — Mobile hard disk, they drain down your laptop Dell Precision M60 Battery 9 cells 6600MAH for there get the power supply from the USB port in your laptop. Remove when you aren’t using them, is goes without saying that this will save a lot of power.
4. Hibernate instead of suspend. Suspend mode make your save some power and instantly resume your laptop when you come back, but compare with the Hibernate mode, suspend laptop also running in lower power consumed situation, electricity exhaust is zero in hibernate mode for all your computer’s state were saved before it shutdown. For the convenient reason, you’d better use the hibernate function when leave over 20 minutes.
5. Keep your Dell Precision M60 Battery 9 cells 6600MAH clean. Keep the battery clean especially the matel contacts with some a cloth moistened with rubbing alcohol, this keeps the power transfer from your Dell Precision M60 Battery 9 cells 6600MAH more efficient.

Product Warranty:
● 100% new high quality Replacement Compatible Li-Ion Battery
● Product Condition: Brand New in Bulk Packaging. OEM Equivalent Replacement Part.
● Manufactured By High-Capacity power products
● 100% compatible with OEM battery
● Full 1 year warranty.30 days money back guarantee!

See more information about Dell Precision M60 Battery 9 cells 6600MAH from http://www.udtek.com.

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.