Results 1 to 8 of 8
  1. #1
    Junior Member
    Join Date
    Sep 2020
    Posts
    12

    Default Laptop charger makes unusual noise

    My laptop (Asus) charger makes an unusual noise like electrical short inside it. This is my second charger and my original charger was damaged sometimes ago. I purchased this from a second-hand item selling shop. So, I don't know further details about the charger. It worked fine for several months and now, I have this problem

  2. #2
    C64 Rules
    Join Date
    Dec 2004
    Location
    Christchurch
    Posts
    186

    Default Re: Laptop charger makes unusual noise

    Does not sound good, chargers should not be making any noises.
    I would recommend buying a brand new charger. You would get at least a 1 year warranty. When buying a charger make sure it outputs the right voltage and amps, if not right you could end up with more problems. You should be able to get these off the old charger. Don't let price dictate what you get, cheap products are cheap for a reason, usually because they have the bare minimum of components to do the job. PB Tech have ASUS chargers, so that is one place to try for a replacement.
    Carlos maybe king, but Merts is God!!

  3. #3
    Junior Member
    Join Date
    Sep 2020
    Posts
    12

    Default Re: Laptop charger makes unusual noise

    Thank you very much for your response. I have already used this for 2-3 months along with the noise without taking it into account. Because there wasn't any charging issue. Anyway, it seems that I shouldn't move further like this.

  4. #4
    Senior Member
    Join Date
    Dec 2004
    Posts
    1,162

    Default Re: Laptop charger makes unusual noise

    You say it worked fine for months, so this noise has only just started?

    I wish I knew what you are hearing but since electrical deaths/fires are no fun and I can't recommend poking around inside the laptop, the charger or with your mains power. All are possible culprits.

  5. #5
    Computer "Specialist" Agent_24's Avatar
    Join Date
    Dec 2004
    Location
    64 Bitville
    Posts
    14,219

    Default Re: Laptop charger makes unusual noise

    The charger is probably on the way out, especially if it did not do that before.

    That said, while power supplies should not typically make noise, sometimes they will make hiss, buzz, or humming noises during normal operation, depending on the design. But that would be the case from day one.

    It's hard to say from your description. What does "a short" sound like to you? To me, a short sounds either like the silence of a blown fuse, or a loud bang as a power transistor explodes.

    I can only guess you mean electrical arcing or such, with a snap, crackle or fizz noise?

    Since the charger still charges, my guess would be on a bad solder connection at the AC socket. On a lot of chargers, this socket is only soldered to the PCB and has little mechanical support. Over time and with many plugging in/unplugging cycles or rough use, these connections can crack. Then you get arcing in the damaged connection. Eventually, the connection will burn away completely and the charger won't work at all.
    Last edited by Agent_24; 16-09-2020 at 03:52 PM.

  6. #6
    Senior Member
    Join Date
    Dec 2004
    Posts
    1,162

    Default Re: Laptop charger makes unusual noise

    I think you mean DC socket, the port the charger plugs into on the laptop. That was my initial guess because it'd be such a shame to buy another charger as suggested.

    In some cases, the charging board can just be replaced. If not, then you have to solder the port back on. Given that is the actual problem.

    So it may involve poking around inside the laptop, the charger or your mains power. Even though, it is easier to test in reverse order but again, electrical deaths are not fun.

  7. #7
    VoidMaster
    Join Date
    Dec 2004
    Posts
    6,158

    Default Re: Laptop charger makes unusual noise

    No, he did mean AC socket on the charger, in my experience hissing and fizzing noises are often caused by a bad solder joint on one or both of the AC input terminals that have been roughly handled because of many plugging ins and unpluggins over the years of use.

    This often happened with PlayStation 1's years ago.
    It's not the least charm of a theory that it is refutable. The hundred-times-refuted theory of "free will" owes its persistence to this charm alone; some one is always appearing who feels himself strong enough to refute it - Friedrich Nietzsche

  8. #8
    Computer "Specialist" Agent_24's Avatar
    Join Date
    Dec 2004
    Location
    64 Bitville
    Posts
    14,219

    Default Re: Laptop charger makes unusual noise

    I did mean AC socket. I've opened/repaired many chargers and it's a common problem.

    It's one of the few faults where a charger could make obvious noises but still work (for a while). Most audible problems in switching power supplies are marked with a bang, followed by nothing working at all.

    Yes, you could get the same bad connection/arcing at the DC side too but it's less common and likely won't generate as much noise due to the lower voltage.
    Easy to tell which one though, just extend the charger cord all the way and listen to both the charger and the laptop. Should be obvious which end the noise is coming from.

    Some better designs connect the AC socket with flying leads so mechanical strain is all but eliminated.

    But when the socket is directly PCB mounted, it must have decent mechanical support, screws, clips into the case etc, otherwise solder cracks happen eventually. Solder is NOT welding, it provides a good electrical connection but a poor mechanical one.
    Last edited by Agent_24; 18-09-2020 at 05:02 AM.

Similar Threads

  1. Charger for laptop
    By sarel in forum PC World Chat
    Replies: 6
    Last Post: 27-11-2014, 10:17 AM
  2. laptop charger not working(?)
    By GameJunkie in forum PressF1
    Replies: 19
    Last Post: 21-05-2010, 11:54 AM
  3. Replies: 2
    Last Post: 23-01-2010, 02:29 AM
  4. Acer Laptop charger: Can I use in China?
    By justinsg in forum PressF1
    Replies: 8
    Last Post: 15-11-2008, 04:22 PM
  5. Replies: 3
    Last Post: 29-08-2005, 09:53 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •