MacBook Pro buzzing in headphones when plugged in

ipodmac

macrumors regular
Original poster
Sep 23, 2012
145
1
UK
My 2012 macbook pro retina has an annoying buzzing sound when the headphones are plugged in and the power is on. If the power is switched off the buzzing sound goes away completely. This issue has only recently started, has anyone experienced this before and know how to fix it? Thanks
 

snaky69

macrumors 603
Mar 14, 2008
5,904
484
It could be a grounding issue. Does this happen regardless of the power outlet being used? What about using the 3 pronged cable instead of the duckhead?
 

c8rlo

macrumors 6502
Sep 1, 2015
377
164
FL
ipodmac,

check your headphone jack, see if there may be a slight bend; you may not be getting a proper connection due to the bend. you can also check your headphone jack port to see if it may have some debris in it...
 

ipodmac

macrumors regular
Original poster
Sep 23, 2012
145
1
UK
its not to do with the anything in the headphone socket, I've done a bit of digging and it appears its something to do with grounding, not sure might try a reset and see if that changes anything
 

ipodmac

macrumors regular
Original poster
Sep 23, 2012
145
1
UK
Just found that its related to a thunderbolt to ethernet adapter as when i unplug it the sound stops. I have a power line adapter and have read that they can cause RF inference between devices which is being picked up by my headphone socket.
 
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c8rlo

macrumors 6502
Sep 1, 2015
377
164
FL
Just found that its related to a thunderbolt to ethernet adapter as when i unplug it the sound stops. I have a power line adapter and have read that they can cause RF inference between devices which is being picked up by my headphone socket.
interesting, good to know; i'll keep this in mind...
 
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