Psu buzzing and overheating

Jan 23, 2019
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So i was playing on my pc that i just built and it just tuned off , then i could smell something burnt and found out that it was coming from the psu , but i could turn the pc on again so i guess it's not dead and it was an overheat failsafe . And after that happened i hear a buzz all the time even at idle . My psu is a coolermaster masterwatt 550watt . Should this be rapaired ?