I have a late 2014 27inch imac that seems to be killing power supplies.
model numbers a149, mf886LL/A, EMC2806
I started having random shutdowns. The only way to turn it back on was to reset the SMC by pulling the power cord out and discharging the capacitors. I did everything I could think of to rule out a software problem, including a fresh install of OSX multiple times on different hard drives.
I have been monitoring internal temperatures, using 2 different apps, and nothing seems that unusual. Running the fans at a high speed doesn't seem to effect the shut downs either.
I was pretty sure the power supply was causing the random shutdowns, so I ordered a new one. The mac came with the delta ADP-300AF power supply. The one I bought was a Liteon pa-1331-2a. Can anyone confirm that these 2 power supplies are interchangeable? The website I ordered it from said the Liteon would be compatible with my imac.
I installed the new liteon power supply. imac turned on and was working normal for a few hours. Then it crashed and this time it wouldn't turn on at all.
I returned the power supply, beetstech.com has very good customer service! They sent out a new one free of charge. I just installed it today. The imac was working flawlessly for a few hours. I was editing in indesign and final cut, doing processor and graphics heavy work. Then I plugged in a second external hard drive to reconnect some media in final cut. I heard a pop from the area of the power supply and the imac was totally dead again.
It appears that this thing has destroyed two brand new power supplies. But for some reason the original power supply still works a little bit. I can at least turn the imac on with that one but it will crash frequently.
I'm at a total loss here. Is the logic board bad as well?
model numbers a149, mf886LL/A, EMC2806
I started having random shutdowns. The only way to turn it back on was to reset the SMC by pulling the power cord out and discharging the capacitors. I did everything I could think of to rule out a software problem, including a fresh install of OSX multiple times on different hard drives.
I have been monitoring internal temperatures, using 2 different apps, and nothing seems that unusual. Running the fans at a high speed doesn't seem to effect the shut downs either.
I was pretty sure the power supply was causing the random shutdowns, so I ordered a new one. The mac came with the delta ADP-300AF power supply. The one I bought was a Liteon pa-1331-2a. Can anyone confirm that these 2 power supplies are interchangeable? The website I ordered it from said the Liteon would be compatible with my imac.
I installed the new liteon power supply. imac turned on and was working normal for a few hours. Then it crashed and this time it wouldn't turn on at all.
I returned the power supply, beetstech.com has very good customer service! They sent out a new one free of charge. I just installed it today. The imac was working flawlessly for a few hours. I was editing in indesign and final cut, doing processor and graphics heavy work. Then I plugged in a second external hard drive to reconnect some media in final cut. I heard a pop from the area of the power supply and the imac was totally dead again.
It appears that this thing has destroyed two brand new power supplies. But for some reason the original power supply still works a little bit. I can at least turn the imac on with that one but it will crash frequently.
I'm at a total loss here. Is the logic board bad as well?