Question about Dell Latitude D400 Notebook

2 Answers

Dell latitude 400 charging problem

When i connect ac/dc adapter to computer, the led indicator for charging starts flashing. it flashes 5 times/brake/5times/brake......
batery is completly empty, so i can't even turn on my computer.

Is it a batery problem or is it charger problem or is there anything else that could cause that problem.

Thank you for your help & sorry for bad english

Posted by on

  • verksace Jul 13, 2009

    Reply to Damilare and ginko



    Thank you both for your answers but you both gave me possible solutions which I've tried out already.

    The thing is that even if I disconnect the batery and power my laptop on charger, it doesn't work.

    I also tested charger with multimeter, it shows 19,5V, which is, I believe, normal. So that exludes battery charger failure (or not?).

    Than again I don't believe that there is a DC socket faulty, because when I plug connector in, led indicator for charging starts flashing like I wrote before (five flashes - brake....) but only if there is battery in. If I remove the battery there is no led indicator flashes, actualy there is no led indicator at all.

    So I thing there is much bigger problem but I just can't figure it out

    I also think that indicator flashes mean something but I can't find that information anywhere.



    And ginko - its not so easy to replace motherboard or laptop because its very expensive here in Slovenia - the cheapest laptop costs about 450 euro and I just can't afford it because its my monthly salary :) and also you know what you get if you buy the cheapest.



    So if you guys or somebody else have any other solution i'll be more than glad to read it.



    Regards Verksace

  • verksace Jul 13, 2009

    Third post

    Reply to Damilare



    Now that's a really great advice, I'll try to repair it by my self.

    Thank you very much Damilare

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Your english is actually above average!
For you to get the best solution to this problem, I'll suggest that you should just try and get a friend, or a technician that has a charger of the same type, i.e a Dell Laptop Charger, to test it with. Now, if it still doesnt work, then you can try and swap the Battery with a working one also. All these are just to clarify things for you and to teach you the easiest way of troubleshooting it yourself.
Then If the new charger charges it, it means you just have to get a new charger, and if the Battery swapping is the one that works, then you might have to get a new battery too.
At the same time also try this quick solution :
Remove the battery from the back of your laptop, and power the laptop without the battery inside. If it works this way, then just try and get a new battery instead.
Hope this helps you out!
Goodluck

Posted on Jul 13, 2009

  • Dammy Ezekiel
    Dammy Ezekiel Jul 13, 2009

    verksaceWhat I suspect now, after all your troubleshooting, is that the at the exact DC Port where you have to plug the adapter when you want to charge your laptop, some of the internal components are burnt. It might not be more than 2 though, if you can trece it very well. So dont consider changing your motherboard yet, until you have explored ALL possible options.
    I wouldnt know if you can actually do this by yourself, or through a VERY good technician, who can help you to test the components inside the laptop, just at the tip of the DC Socket Port (but Inside the laptop). I handled a case like this before where I just had to change a very small capacitor inside the system at the exact point where the DC Current enters the Motherboard panel inside...and the laptop started working perfectly well...funny enough the owner was so happy and is still using it till today!
    I would suggest that you get a good technician to try that for you...I really wished I could do it for you...but I'm sooooooooo far from your country...lol :)..(Nigeria). Hope this helps you better.
    Sorry about the problem...trust me I understand!
    Goodluck!



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The battery charger can be tested using a multimeter, the contacts of battery charge connector must read +_.5V on prescribed voltage.

Faults that can cause the problem.

Faulty AC adapter.

Faulty battery (in this case it will start with no battery inside)

Faulty DC socket on laptop motherboard.

Test the charger, if voltages are wrong replace it, if voltages are fine have the motherboard replaced or repaired, or replace the laptop.

Posted on Jul 13, 2009

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