This is what happens every time I restart my iMac: The CPU fan will start ramping up speed slowly until it seems to be maxed out around 4000 rpm (noisy). After running full speed for anywhere from 5 minutes to 30 minutes, the computer screen goes black. It appears to shut itself off in an attempt to not self destruct. But it's not completely shut down. It's almost like it goes into sleep mode. You have to press and hold the power button to shut down completely and then start over. I took it to apple 2 hours away and they ran a little diagnostic and told me what I already know and then brought to my attention that they WILL NOT work on anything over 6 years old. Begging and pleading didn't help. I was willing to spend a significant amount of dollars but no way, no how. I have a local place that says they work on Apples but I am pretty sure they've worked on 1 or 2 and didn't give me much confidence. They essentially told me they could try a power supply and see what happens. I decided to try that myself. Just replaced the power supply and it did not fix the problem. I can't find this exact issue anywhere on forums. Has anyone else experienced something like this? Would you recommend moving on to replacing the logic board? I'd hate to have $200 in the power supply plus $500-600 in a logic board and still have the issue. I would love to keep this thing going, it has worked so flawlessly otherwise. Please, any advice much appreciated.
Thank you,
Tyler
24" iMac 2.8 Dual Core Extreme, Mac OS X (10.5.6)
Thank you,
Tyler
24" iMac 2.8 Dual Core Extreme, Mac OS X (10.5.6)