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Laptop adaptor is beeping + humming.. but still works

post #1 of 3
Thread Starter 
So my laptop adapter has had on and off humming noise from the adapter for the past year. It was random. Now its suddenly beeping + huming, but only when the laptop is on. If its off, then it doesnt make any noise. I should also note i live in Canada (so 120V) but I'm currently out of the country and in a country with 220V. The adapter is rated for it.
post #2 of 3
Beeping?? I've never heard of a laptop adapter beeping before.

It's probably a protection circuit or something. I would imagine they would only design it to beep in emergency situations.

Are you able to unscrew the adapter and take a look inside to see if any capacitors are swollen or anything? Depending on how old the adapter is, it might be worth it to just buy a new one as soon as you can, so as to prevent anything from happening to your laptop.
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Sandisk Extreme 120GB SSD Cooler Master Hyper 212 Plus Windows 7 x64 Professional Hanns-G 27" 1920x1200 
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post #3 of 3
This probably isn't too useful, but the last time my computer was making weird noises it was due to EMI as shown by this youtube vid.

1:00 to 2:00

http://www.youtube.com/watch?v=ofN1EsZVoGY
    
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i7 4700mq P150SM-A HD 8970m Random manufacturer 
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CPUMotherboardGraphicsRAM
i7 4700mq P150SM-A HD 8970m Random manufacturer 
Hard DriveOS
Crucial M400 Windows 8 Professional 
  hide details  
Reply
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Overclock.net › Forums › Mobile Computing Forum › Laptops and Netbooks › Laptop adaptor is beeping + humming.. but still works