Power Plug
Power Plug
Dell Precision M20 Battery Stops Charging When I Move The Power Cord
My Dell laptop has a power problem.
The Dell Precision M20 Batterystops 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
About the Author
Our products fit with over 10,000 models of Laptops, Scooter, Lcd from leading brands including Sony, Dell, IBM, Toshiba, Apple, Compaq, HP, and many others.
Welcome to www.udtek.com.
My '99 Corolla idles roughly and lacks power after plug wire change. What should i try?
The vehicle was shaking violently when idling and the check engine light was flashing indicating a misfire. I found one of the spark plug wires to be bad and replaced all of them. The car still idles roughly (not nearly as much) and has limited power in acceleration. If you give it a lot of gas the light will flash indicating a misfire.
Diagnostic codes indicate misfire in cylinders 1 and 4. Likely an ignition coil? How can I verify this?
It sounds to me like your spark plugs are firing incorrectly. Check the firing order and double check the gap(even if its pre gapped).
Power Plug
Replacing acer laptop power jack part 1 of 2
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Simple Guide to Understanding Plug In Hybrid Cars
With the UK government set to introduce major new ‘Green' initiatives, and increasing concern over petroleum prices as well as pollution issues, the plug in hybrid car is fast becoming the star of new generation vehicles.
The following guide will explain what plug in hybrid technology is all about as well as describe its current pros and cons.
Introducing the Plug In Hybrid Car
Hybrid vehicles were first produced as early as 1899. Early hybrids could be charged from an external energy source before operation, but the term "plug-in hybrid" has come to mean a hybrid vehicle that can be charged from a standard electrical wall socket.
A plug-in hybrid electric vehicle, termed PHEV or PHV for short, has rechargeable batteries that can be restored to full charge by connecting a plug to an external electric power source, just as with other electronics we so frequently use.
The Energy Independence and Security Act of 2007 officially defines a plug-in electric drive vehicle as a vehicle that can be recharged from an external source of electricity for motive power and draws this motive power from a battery with a capacity of at least 4 kilowatt hours.
A PHEV shares the same characteristic as conventional hybrid electric vehicle in that it has an electric motor and an internal combustion engine. It is superior to hybrid cars however in range of distance before a refill is needed because its combustion engine works as a backup when the batteries are depleted – this gives it the same range reliability as a traditional petrol operated car.
Manufacturers are increasingly turning their attentions to this eco-friendly form of transport – we are seeing more and more PHEV passenger cars, and in the future we can also expect to see them in the form of commercial vans, trucks, buses, motorcycles and scooters on the roads.
Main Benefits of PHEV Vehicles
Fuel Economy
The cost of electricity to power plug-in hybrids for all-electric operation is estimated at less than one quarter the cost of petrol. Total fuel economy of a PHEV depends on the amount of driving between recharges. The beauty of this technology is that PHEVs have the potential to be even more efficient than conventional hybrids because the reduced use of the PHEV's internal combustion engine allows the engine to be used at or near its maximum efficiency.
Eco-friendly
Compared to conventional vehicles, PHEVs reduce greenhouse gas emissions that contribute to global warming. Plug in hybrid cars also remove our dependence on petroleum, which has become a major political and pollution issue in our times.
Power Source Convenience
In time, we are likely to have the convenience of home recharging, which means less trips to fuelling outlets. This would also mean your car effectively becomes an emergency backup power for the home if there's an electricity cut.
Disadvantages of Plug In Hybrid Cars
Battery Cost
Currently, the initial cost of a lithium battery for a PHEV is fairly pricey. Experts predict however that by 2020 the cost will have dropped by 35%.
Fuel Source for Electricity
If PHEV's become massively popular, it will significantly reduce carbon emissions in urban areas, however the more rural places that produce the fuel that produces electricity, especially when generated by coal, will experience increased pressure for production and thus a raised carbon emission level. Thus, for this technology to provide the best advantages for all, electricity production also needs to be streamlined and made more efficient.
Tiered Electrical Charges
If electricity companies charge on a tiered scale, you could end up with a fairly hefty bill for charging your plug in hybrid – the way to avoid this is to try to always charge it during off-peak times.
Recharge Outlets
Currently, there are not enough recharge points for PHEV's to match major consumer demand. This is due to change in the UK however – see the following information of the Governments new scheme.
Government Electric Car Grant Schemes
This year the UK government has launched a major new scheme which will see consumers given a £5,000 grant to buy and electric car, along with plans to build alot more charge points throughout the country.
While there has been some debate over the roll out of grant money, 2011 is set to be a 'breakthrough' year for electric cars, with most major car manufacturers racing to introduce new models.
The government proposals are part of a £250m strategy which aims to revolutionise Britain's road transport network based on ultra-low carbon vehicles. Currently, as a first phase, it is putting £20m towards regional partnerships to install 4,000 points by 2015.
Around the rest of the world, other governments are increasingly introducing similar schemes to slash their carbon emissions.
Conclusion
While the plug in hybrid car is still very new to public roads, we are sure to see an increasing amount of new models being released and charge points built. Quite simply, PHEV's are a major way forward if we want to achieve lowered carbon emissions for future generations.
About the Author
Jeremy Allston is a car repair business owner and plug in hybrid car enthusiast.
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Power Plug