Strange buzzing sound under the power button


hi guys,

since today macbook pro (retina, 15-inch, late 2013) making strange buzzing sound every few seconds. goes in same interval. 4 seconds silence, 1 second buzzing.

video of location , sound:

https://vid.me/xlxg

tried diagnostics , brings this:

there may issue fan. ppf004 / ppf003

fan? , how severe problem?
 


new info:

according smcfancontrol right fan not working. 0 rpm.
 


Forums Macs Notebooks MacBook Pro


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