Instal the new for apple Disassembly2/9/2024 ![]() ![]() ![]() Of course that’s not a super easy repair so a schematic or board view would help a bunch. ![]() I’ve gotten the device to boot with my RAM (6GB DDR3) so I don’t think that’s the issue but I’m leaning towards the idea it’s a bad SMC. lts really hit and miss at this point and unless my one wire circuit is destroyed I’m not sure why my fan is being turned on by ghosts. Before beginning any work on your iMac: Unplug the computer and press and hold the power. It describes how to install the SSDs temperature sensor so that the Macs fans will operate at the correct speed. This guide also includes steps to upgrade your iMacs hard drive with a SSD. After it panics it’ll reboot and the diagnostic LEDs are gone again, and it’s back to the fan turning itself on and not turning off. Replace the hard drive in your iMac Intel 21.5'. If I’m lucky I can leave it sit for a couple hours, unplug it and replug it a few times, switch a RAM stick to the other slot or some other obscure fix, and then get the diagnostic LED to turn back on but the Mini just panics upon starting and won’t get into OS X. The Mini will just sit there for however long on full speed fans unless I unplug the machine, no display, and unresponsive to me either pressing the power button or jumping the pins. My Mini is having some bad logic board problems (fans spin up to max speed immediately upon plugging in, no power button required), diagnostic LEDs don’t turn on, and other than the fan it’s the only sign of life it has. I can only find Rev A boards online and even then they’re not full board views. Does anybody have boardview schematics for this specific model? Revision C. ![]()
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