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Replacing a Laptop AC Adapter

Let’s face it, AC adapters are not the most durable of laptop accessories. Everyone has experienced the inconvenience of an adapter malfunctioning, whether it be due to overheating, bent or broken pins, or tweaked wires. But how best to go about replacing a broken adapter? Read on.

Diagnosis

Your laptop should have an LED indicator and some sort of outlet icon on the task bar to let you know that the power cable is plugged in. If the cable is plugged in but the light isn’t on and the icon doesn’t show up, there’s a problem.  Check that the cable is connected to the adapter box and the adapter is plugged into the wall. Try switching outlets to make sure the problem isn’t simply due to a faulty outlet. Also, make sure that the cable is not being bent or pinched. If none of these things are to blame, your adapter is most likely broken.

Decision

Now it is time to decide whether to purchase a direct replacement – usually a more expensive but more reliable choice – or to choose from one of many third-party adapter options. If you choose to order a direct replacement, all that is required is to make sure that the item numbers match. This number is almost always located on a sticker on the underside of the adapter box.

If you are ordering a third-party adapter, things tend to get a bit more complicated.

The item number is still key to determining which adapters will work with your laptop, though there is often a lot of overlap between models with some adapters working for a wide range of laptops and some working for very few. For example, laptop battery part number ac-160 is compatible with a wide range of Compaq Presario laptops, including the 2200, 2800, and a wide range of M, X, and V lines. There are many databases available online with which to look up AC adapter compatibility information, and going into your local dealer to inquire in person is always a good option. If possible, it is a good idea to purchase an adapter that will function with the widest range available. Even better if you own more than one laptop and can find an adapter that works for them all! Just be sure that the adapter’s voltage equals or exceeds the voltage required for the laptop to run; Otherwise, you’ve just ordered an expensive, unsightly paperweight.

Alternative?

A good alternative is to purchase a universal AC adapter, as they come with an assortment of tips to fit into multiple brands and models of notebooks, and they have switches to adjust the voltage as necessary. This way, you can pretty much always be sure that your adapter will work.

Conclusion

There is no simple solution when purchasing an AC adapter, as all laptops have different requirements. Your  item number and voltage requirements are the keys to success in the wide world of AC adapters. Keep these things in mind and you can’t go wrong. Good luck!

About The Author

Jack Edmund is a blogger for the laptop battery and accessories retailer PriorityElectronics.com. His interests include kayaking, bird watching, and technology.