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当前版本: Michael South ,

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Same issue with two different models of iMacs. One 2017 18,1 Mojave and the other 2008 8,1 El Capitan. Both shutting down. Sometimes will not allow SMC reset for extended amounts of time. Sometimes stays on for seconds, then several hours until power off reoccurs. Clean installs for both. 2008 staying up for going on 12+hours. The 2017 machine powered down and is now in the shop as of this afternoon. With this older iMac, I have not plugged the external display into the port. I have no external hard drives connected. Only installed Logic, iMovie, and I may try to install Final Cut if it says up longer. I have not installed the extra filsfiles for Logic, yet. I am reluctant to use any external displays or hard drives. I want to isolate the problem. I also am not going to turn on the USB midi piano. I will be streaming several videos from Prime and Netflix. I will never again install Google Chrome on a Mac. Read enough nightmares and think that may be the root of my own power downs. 4-6 business days excluding this weekend and M-T, I will be speaking with the tech who is working on the 2017 machine. Plan on relating the thread to him. Will post soon.
Same issue with two different models of iMacs. One 2017 18,1 Mojave and the other 2008 8,1 El Capitan. Both shutting down. Sometimes will not allow SMC reset for extended amounts of time. Sometimes stays on for seconds, then several hours until power off reoccurs. Clean installs for both. 2008 staying up for going on 12+hours. The 2017 machine powered down and is now in the shop as of this afternoon. With this older iMac, I have not plugged the external display into the port. I have no external hard drives connected. Only installed Logic, iMovie, and I may try to install Final Cut if it says up longer. I have not installed the extra filsfiles for Logic, yet. I am reluctant to use any external displays or hard drives. I want to isolate the problem. I also am not going to turn on the USB midi piano. I will be streaming several videos from Prime and Netflix. I will never again install Google Chrome on a Mac. Read enough nightmares and think that may be the root of my own power downs. 4-6 business days excluding this weekend and M-T, I will be speaking with the tech who is working on the 2017 machine. Plan on relating the thread to him. Will post soon.

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原帖由: Michael South ,

文本:

Same issue with two different models of iMacs. One 2017 18,1 Mojave and the other 2008 8,1  El Capitan. Both shutting down. Sometimes will not allow SMC reset for extended amounts of time. Sometimes stays on for seconds, then several hours until power off reoccurs. Clean installs for both. 2008 staying up for going on 12+hours. The 2017 machine powered down and is now in the shop as of this afternoon. With this older iMac, I have not plugged the external display into the port. I have no external hard drives connected. Only installed Logic, iMovie, and I may try to install Final Cut if it says up longer. I have not installed the extra fils for Logic, yet. I am reluctant to use any external displays or hard drives. I want to isolate the problem. I also am not going to turn on the USB midi piano. I will be streaming several videos from Prime and Netflix. I will never again install Google Chrome on a Mac. Read enough nightmares and think that may be the root of my own power downs. 4-6 business days excluding this weekend and M-T, I will be speaking with the tech who is working on the 2017 machine. Plan on relating the thread to him. Will post soon.

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open