Good morning, I am new on here so apologies if in the wrong thread. I have a 2015 iMac 27 non 5k which when in sleep mode blows the plug top fuse and now it has started doing this even in screensaver mode. Tried a new power lead plus different locations including another property so have eliminated every possible cause. I see on other forums this is an issue in some instances. Does anyone have any ideas, is it worth a repair attempt or do I buy new. The spec is high on this model so there is some reluctance but cost of repair I imagine could be quite high. Thanks for any help with this.