The model is 27, late 2013. I had this problem for a long time. First time I noticed it, few years back, when the charging iPad constantly connected and disconnected. There were other occasions. Sometimes everything seemed to work just fine. Now I'm booting from external SSD and suddenly system dies. I assume because the port has failed. I still can access the SSD, but if I use it to boot and load it (say, Logic stuff) - the black screen of death occurs.
Also, my iMac gives me little electric shocks when i touch the aluminum frame. I wonder if USB randomly failing and this is connected.
Also, my iMac gives me little electric shocks when i touch the aluminum frame. I wonder if USB randomly failing and this is connected.
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