Chosen Solution
Hi there ! I’ve got 3 iMac intel 17" (owned in 2007) and here is my problem on one of them. Sometimes, it used to self shut down, without any apparent reason. Since 2 weeks now, impossible to turn it on ! No led flashing, not any sound… I tried to change the supply cable with another iMac’s one : Failed I tried unplugging it, witing 10s, pressed the power button for 10 to reset everything, then plugged it back in, then waited again but still no life… SO, I have 3 possible explainations : The power supply is deadThe Logic Board is deadBoth are dead I was hoping you to help me. Is there any way to see or to test those parts (i mean with steps because i never electronically tested such an iMac). Do someone know about similar/common problems on the same model ? I hope it to be back to life soon with his 2 brothers perfectly working… Thanks in advance ! EDIT : I’ve not been able to find any diagnostic LED. These apparently are not on every macs. The mac booted once but self shut down after 15mn. So i think That the motherboard is stil ok. Still waiting for help !
For those who are interested, the problem was a defective Power Supply. Capacities seemed to be damaged. I Owned a new one @ iFixit and my computer now only shuts down when I ask it. Problem solved !
Look at this previous Answer If this Answer is helpful please remember to return and mark it Accepted.
Did you try it with different power cord? You may get a faulty power cord, if you try all ‘combination’ between 3 brothers.
