Mackbook Pro 17 inch loud hissing from left speaker

Has anyone had a problem with 17 Inch Macbook Pro, loud hissing from left speaker after a full SMC reset?
It only makes the hissing sound when a audio clip or system sound is in progress.
Cheers
MC

Fixed.
Whilst playing around with the balance control, I discovered left was right and right was left.
Opened the top cover, unplugged flipped over and replugged the speaker plug on the left board (it looks like it's a one way plug but it still allows it to be plugged in the wrong way).
Working properly now.
Hope this helps someone out there.
Cheers
MC

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Hi Goldenbird,
Welcome to Lenovo Community!
As per the query we understood that you are facing issue with left speaker in your Lenovo Y50 laptop.
This might be issue with the speaker cable which is not seated properly, please visit the nearest service center fo further details
Click here to open a link where you can select the country and get the exact contact support number. I’m sure
they will be a great help.
Hope this helps. Do post back if the issue persists!
Best regards,
Ashwin. S
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Although I am an HP employee, I am speaking for myself and not for HP.
Make it easier for other people to find solutions, by marking my answer with 'Accept as Solution', if it solves your problem.
Click on the BLUE KUDOS button on the left to say "Thanks"

Mackbook Pro 17 inch loud hissing from left speaker

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