My daughter's Dell Latitude E5500 won't charge. If I plug her charger into my exactly the same model - works fine. The moment the power lead touches her input port, the light goes off and then the cha

SOURCE: Dell latitude D600 battery charge light flashing

You have a ground fault issue in the DC JACK.

There are escentially 4 circuits in the jack and one is not making contact.

1: Negative Charge circuit (outter ring)
2: Negative Run circuit (outter ring)
3 Positive (Inner Ring)
4: Signal (center pin)

I believe the negative charge circuit (outter ring) is not making contact internally. Typically what happens on that model DC Jack is the tension contact metal becomes fatigued, and does not touch the outter ring.

This could come from Heat causing early fatigue of the metal.
Or normal wear, the metal has simply worn out from regular insert/removal.


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SOURCE: Dell latitude D600 battery charge light flashing

That usually indicates battery is beginning to go bad. Eventually it will not hold a charge and will need to be replaced.




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SOURCE: Dell Latitude D430 laptop. Laptop

the issue seems with the inverter board of the machine and chek once the machine at any other place.

SOURCE: Vostro 1500 Charger Light goes off when plugged into Laptop

Which window is running on ur laptop ?

SOURCE: Dell Latitude D600 won't accept charger

Had the same problem, My other Dell charger would work fine but the original one that came with this laptop would throw an error message that the Charger wasnt recognized. None of the suggestions on the forums worked.
I held the chord by the circular flex thing at the end, and pushed in the power pin with force into the laptop, held it for a few seconds and now it works fine. If you push the pin slow and gently into the laptop, it doesnt recognize the adapter. I think the problem is either with the power chord connections inside or with the adapter inside the laptop. Try it!