![]() If you have removed the power supply, a good hi-res picture of both sides of the board MIGHT reveal a problem. I don't have experience with this particular model of power supply to make better suggestions, though it would appear that you are not alone with a failed power supply in a late model Intel iMac causing the same symptoms. The heat build up within the cap also looks like the logic board also has some damage with its traces. Some complex Switch Mode Power Supplies have the ability to shut-off completely if a faulty condition is reached, only clearing the shut-off when mains power is removed for an extended period of time - NOTE I'm not suggesting this is a permanent solution, but it may assist in troubleshooting. Here's the needed sensor iMac Intel 21.5' and 27' (Late 2012-Late 2015) SSD Temperature Sensor So yes, the blown Cap could be caused by overheating. The other thing to try is to unplug the mains power for an hour, and try again. I've seen people adapt a standard ATX power supply as a troubleshooting/permanent solution, BUT, without a pinout guide of the 27" Late 2013 PSU, I'd recommend against it, simply because applying the wrong voltage to the wrong pin could damage your motherboard. It would seem that the second power supply is NOT powering up. ![]() ![]() When you press the power button, this powers up the other part of the power supply which provides higher current and additional voltages to run the machine. A standby power supply which provides a small +5 volt rail to allow for soft power on. The pegasus causes iMac to reboot every since a while. The temprature is always high causing fans to make a lot of noise. I use the last update in promise utility and drivers like support center mentioned to me before. It contains two power supplies in one board. When I connect my Pegasus 3 via a thunderbold 3 to thunderbolt 2 adapter seems like everything is not working properly. However, my first port of call would be the power supply. Sadly, it's near impossible to prove without swapping in a replacement module. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |