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External Power on Dell 4150

External power on Dell Inapiron 4150 not working but battery does work. Any solutions?

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Re: External Power on Dell 4150

This is likely either a defective transformer on the external power adapter (not likely, but possible) or defective wiring in the external adapter wiring or the internal PC board. If you have a multimeter, set it to DC volts and put one lead inside the power jack of the adapter and the other lead on the outside portion of the jack and then plug in the adapter. You should see the rated DC output voltage on the meter (rating is usually on the bottom of the transformer, or big boxy part of the adapter). If you don't have that voltage then it is likely a defective adapter. Like another helper mentioned, try either a friends IDENTICAL adapter (don't use just any adapter or you could damage your computer!), or a universal adapter to make sure. I've seen many adapters with broken wiring in the jack, most often due to bending and/or stress when it sits in a tight space most of the time. If a new adapter also doesn't work then the computer requires service from a service center.

Posted on Oct 25, 2006

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Re: External Power on Dell 4150


Posted on Sep 04, 2006

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Re: External Power on Dell 4150

It could be an issue with the power cord, it it could be an issue with the computer accepting the charge. The only way to test is to get another power cord that matches the exact same one you have, or to find a univeral power cord that is compatible and see if it will use the external power this way.

Posted on Aug 23, 2006

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Please help! I have a gateway NE51006u Intel celeron quad core processor N2920 windows 8 laptop. Recently it has been making clicking and notifying me that there is no bootable device. I have tried all...

Solution 1: Instructions for Performing the Power Discharge Procedure (ATX Reset)

Your computer has no power at all or cannot boot properly. In some situations this can be caused by an external device or an electrical problem. This can usually be solved by removing all external devices and resetting the power supply.

Instructions for laptops:

1. Disconnect all external devices you have.
2. Unplug the power adapter from the laptop.
3. Remove the battery pack from the laptop.
4. Press the power button and hold it for at least 15 seconds.
5. Reconnect the power adapter.
Do not yet reconnect the external devices, they should stay disconnected. Do not yet reseat the battery pack.
6. Switch your laptop on and test if it boots normally and watch if the power LED lights up.
7. If the power LED still does not lights up, continue with the next steps.
8. Disconnect the power adapter from the laptop.
9. Press the power button and hold it for at least 15 seconds.
10. Reseat the battery pack. Do not reconnect the power adapter.
11. Switch your laptop on and test if it boots normally.
Solution 2: Unplug and reconnect System Hard Drive
1. Unplug the power adapter from the laptop.
2. Remove the battery pack from the laptop.
3. Unplug and reconnect System Hard Drive. This is normally accessible by removing a panel at the bottom of the laptop or removing the back enclosure (see User Manual).
4. Reseat the battery.
5. Switch your notebook on and test if it boots normally

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Hi my dell inspiron 1520 not starting when power button is switched on..the power light blinks and goes off..and the system doesnt start. I had shown the laptop ito dell service center and they have...


The most common reasons are the battery, power jack and power adapter/cord.

Power off and remove the battery. If the laptop powers on with just the adapter connected, your battery is faulty.

If you move/wiggle the power adapter at the point where it connects to the laptop, and the power goes off and on, the power jack is the problem.

The power jack is inside the laptop and either needs soldering or replacement.

If no change, the power adapter is probably faulty and needs replacement.

But, if you paid for the Dell service, Dell needs to fix the problem. Sounds like they replaced the motherboard with another faulty one.

Hope this helps.

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Try reinstalling the ram. If no change connect to an external monitor and see if it works on that. If so you have a power to screen problem on the laptop lcd.

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it seems to be a problem with motherboard as you said you have replaced power supply and ac adaptor , try disconnecting external pheripherals do a flea power it doesnot start then you will have to replace motherboard

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Hi tjltechnical,

There could be many things that could stop the board from turning on, Determining if it works is like detective work. What I do, is take everything off the board to start. Then add the minimum to start a board to see if it will start. That's one drive (cd or otherwise) the CPU, and one bank of memory. (that's not a required eliminate, but it helps avoid beep codes) Also, make sure you have your pin's set on the board absolutely correct, or that could be your problem to begin with. Now, you should get the power supply on, and the cpu. If those don't power up, it's then either one of the five elements. The CPU, Power supply, Ram, Drive, or the motherboard. The next step is to replace each one of the first four to see if you get any change. If no change, then I usually get another board that I can test the first four, and make sure that they work. After that, then I say you have a DOA Board

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I have seen this with faulty batteries.
Try changing the battery.
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1. try having your battery's health checked by an authorized dell service center.

2. if your battery pack is over 3 years old, there is a possibility that it already needs changing.

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