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Q: My macbook air is making a hissing noise.
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by OGELTHORPE,Jun 24, 2016 10:09 AM
OGELTHORPE
Jun 24, 2016 10:09 AM
in response to Chloeisaunicorn2002
Level 9
(52,764 points)
Mac OS XThe fan should be the only noisemaker on a MBA and that does not sound like it. I would try SMC and NVRAM resets and see if there is any improvement:
https://support.apple.com/en-us/HT201295
https://support.apple.com/en-us/HT204063
You could try an Apple Hardware Test:
https://support.apple.com/en-us/HT201257
Note than an error free AHT is not conclusive.
If no change, make an appointment at an Apple store genius bar for a FREE evaluation.
Ciao.