Second power supply failed?
Ok so about 6 months ago I replaced the power supply in my iMac with one purchased from here. The guide was great, took no time to replace and while I was at it I added a second drive (256gb Solid state with the cable purchased from iFixit). I was supper happy for a few days untill the dreaded buzz noise came back. Last week I went ahead and replaced the display LED driver board hoping that the buzz would subside. It did not. Noise only seems to happen once it warms up. Once the buzz starts it does not stop untill I shut the mac down and do not come back till the next day. I wanted to know if anyone had any advice before I purchase another power supply or a new iMac / pc.
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