Recent content by JoeHobbyist

Confirmed: removing U9300 (broadcom ethernet chip) cleared all shorts on PP1V2_ENET_INTREG and PP3V3_ENET, and it immediately booted to recovery and allowed OS installation. Mac Mini is now useful!

Definitely have an ethernet subsystem issue. PP1V2_ENET_INTREG is 6 ohms to ground, and PP3V3_ENET is 30 ohms to ground. Known good board is not like that at all. I'm guessing U9300 (broadcom ethernet chip) failed. probably going to grab one from a donor board, and re-check all the...

I was testing all the ports today (as best as possible, given it won't boot) for clues. All 4 TB ports can output displayport video, both USB2 ports will initiate the PRAM reset, but I DID notice that the ethernet port will never light the link light on a switch. I compared to another working...

safe mode (holding shift key down) doesn't work. Apple logo for about 20 seconds, then reboots. no progress bar. No history. mac mini was given to me as old and broken.

I have 2018 i7 mac mini (t2) that I'm trying to make useful. It boot loops at the apple logo. Only the apple logo appears for about 20 seconds, and then it reboots. There is no progress bar or any other on screen output other than the apple logo. DFU mode works fine, and I have tried both...