PLA5456 high pitched noise from both adapters

Cassano Posts: 1  Freshman Member
edited December 2017 in Smart Home Product
I recently bought a kit of pla5456 after years of reliable service from pla4201 V2. Sadly the adapters both have constant extremely high pitched noise. Would this thing go out in time like some GPUs does or I need to RMA them? I'm asking because of the narrow window from the retailer to do that. 


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