“a few months ago my AC adapter stopped powering my inspiron 8500. It has a green light on it and that light stopped coming on, and I could hear a faint beeping coming from it (meaning that power was getting to the adapter but it was not doing what it was supposed to). So, I ordered a new part, and it got here and after 3 days of use, it started doing the same thing. I am assuming that these are broken, but if anyone can tell me otherwise I`d be really happy. I looked over some of this forum and the laptop ac power Adapter outputs the same amperage as the computer requires (at least on the new one that broke in three days). I thought this might be a common problem or something but maybe I`m just unlucky.”

Answer:”Some switching/regulated power supplies seem to have a hum or a whine moreso than others. (I’ve a Dell laptop supply that hums.)

You should try putting different loads on it. When the laptop is on, backlight at full, charging the battery, etc, the power supply will be under more load than when the laptop is powered off and the battery is full (or not present). Under the light load, the supply may hum more loudly or not at all.

My experience has been that if the laptop power supply hums or makes noise when under load, it’s probably an indication of impending failure. If it hums when under light or no load, it may simply be that it’s making the noise as the switching circuit engages less often. (The Dell supply I mentioned hums under light/no load, and has been fine for years.)

A switching power supply essentially turns on and off at a high speed, and it is this cycling that can cause an audible sound.

Try the following:

Try a different wall socket. There might be a problem with mains power causing it.

Measure the output using a voltmeter to see if it’s within tolerance of the stated specifications.

If it’s a high-pitched whine or hum, it might be just fine. If it’s more of a hiss or sparking sound, you might have bad components that are arcing internally, etc.

Most power supplies like this are very difficult to open up to inspect; not recommended unless you know what you’re doing and don’t mind voiding any warranty. It’s probably best and safest to procure a replacement supply before doing any damage to yourself or your computer.”

“Solutions for Laptop Charger Beeping

Now that you know the possible reasons for the laptop battery not charging and the charger beeping, you also need to be aware about the solutions for the same. First of all, understand the fact that there are not too many things that you can do, when you come up with this problem. The only option that you are left with is of buying a brand new charger of the same brand. If there is no problem with the electricity circuit or the power supply, the only thing that you can do is to throw away the existing charger for a brand new one. There is another thing that you can do, if your laptop charger starts beeping within the warranty period. In such cases, you can contact the dealer from where you bought the laptop. You can also directly contact the customer care cell manufacturer and demand for battery charger replacement! These are the two best solutions that you can opt for.

A laptop battery charger is quite inexpensive as compared to the laptops and hence, rather than taking chances with life and performance of your laptop, it is always better to buy a new charger!