Article ID : 00006710 / Last Modified : 08/15/2015

How to troubleshoot a power adapter or transformer that is making a loud humming or buzzing sound.

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All power adapters or transformers (the brick) will make a humming or buzzing sound to some degree. However, if this sound is excessively loud, then the issue could be caused by either a problem with the transformer or the quality of the AC line voltage.Image

NOTE: If the noise intensity varies at different times throughout the day, then the issue is most likely due to the quality of the AC supply voltage in your area. Otherwise, the transformer may be faulty. If it is the case that the transformer is faulty, service may be required.

For all Sony products (EXCEPT VAIO computers): To send your product to a Sony facility to be repaired or to check the status of the a repair, visit our eService web site.

  

For VAIO Computer products: Please call 1-888-4SONYPC (476-6972) for service information for your product. To check the status of your VAIO product repair, have your phone number or Best Buy service number available and call 1-800-433-5778.