When I connect my MacBook Pro 13 inch 2.4 GHz i5 with an audio cable from the headphone jack to my old Sony speakers (I don't know what model... at least 5 or 7 years old and therefore quite obsolete), there is a buzzing sound coming from the speakers underneath whatever music I am playing and persists even with no music playing. I do not know anything about audio in electronics, and so I do not know the problem. Whenever I touch a metal surface, the buzzing goes away and returns when I remove my hand from it. The same goes for my iPod touch if I touch a metal surface on my iPod when connected with the cable to the speakers. This never happened for my old Acer laptop (ironically) and I wonder what the problem is, or at least some way of removing the buzz without having to keep my hand to the MacBook Pro every minute of music playing. Thanks!!!
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Buzzing sound unless touching metal surface.
- Thread starter caspersoong
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Does this only happen when your MBP is plugged in to power? If so, are you using the three prong plug or the two prong plug?
There is probably a grounding problem somewhere.
It happens on battery as well... I am in Malaysia and so am using a three-pronged plug. Thanks for the quick reply. And how do I solve this problem? (And why did it not happen to my old Acer laptop?)
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Are you using cable from plug to the power adapter, or the adapter that plugs straight in, only the cable is grounded, and what you're describing sounds like a ground loop difference between two audio devices.
This is a problem with the jack, I had the same problem with a pair of headphones and a jack on my mbp. I was not getting a flush entry with the headphones into the jack. try to jiggle the cable while you plug it into the jack, or try and see if theres any debris inside.
i would get a low full sounding hum unless I (my person) physically touched some metal object or the mbp. It is most likely the cable not the equipement from my experience.
i would get a low full sounding hum unless I (my person) physically touched some metal object or the mbp. It is most likely the cable not the equipement from my experience.