Check the voltage output of the adapter with a voltmeter and compare the reading with the value listed on the adapter. The adapter may cause a short circuit because it provides too much power. The solution is checking the short circuit with a multimeter, and then solder it correctly, and make sure that DC '+' and DC '– ' do not touch each other. The main reason for the beeping soundof the laptop charger is a short circuit in the DC circuit.

Please make sure your AC adapter is properly connected to the socket, or try to replace the socket. Therefore, your AC adapter cannot supply power normally and will beep. Is the wall socket supplying powernormally?Īnother reason that may be a faulty power outlet. Please remove the items that affect the heat dissipation of the charger and make sure that the laptop charger is working at a suitable temperature.Ĥ. If it is, the normal working environment will not generate too much heat. Any of these symptoms indicate that the adapter cord is malfunctioning and the cord needs to be replaced as soon as possible. Make sure that the AC power cord is properly connected and the AC adapter is working properly.Ĭheck the power cord for signs of burns, frayed wiring, and severe kinks. The correct jack should beeasy to plug into the laptop. The laptop needs to be charged with DC power, so the AC adapter will convert the AC voltage to DC voltage, but if the AC power cord is loose for some reason and the AC adapter cannot supply power normally, it will beep.Ĭheck whether the power jack of the adapter is correctly inserted into the laptop plug. Here are some possible reasons and solutions. There may be many reasons why the laptop charger making beeping noise and cannot charge the laptop correctly. Because the power adapter will emit a sound with a fixed frequency when switching the power supply, because the rated power of the inductance coils of different frequencies is different, the sound of the induced current is also different. It is normal for the computer adapter to make electrical noise. Now when I use it, why does my laptop adapter produce electric buzzing sound? Is something wrong with it? In this post, I will tell you how to solve laptop charger making noise yourself. I have a Dell Inspiron 6400 and have used it for many years.

Laptop makes beeping sound