Is my logic board fried?
Came back from a coffe break and found my Mac continuously rebooting by itself. Ended up taking off the hard disk data in target mode to another computer, but would frally like to fix this one!
Here are the symptoms, does this sound like the type of problems that the 2011 model was having back then?
WITH BATTERY CONNECTED:
Battery shows OK when battery tested (third party software)
Magsafe light shows green (strange though, always green)
But if the magsafe charger is taken off while computer is on, screen (& computer) goes immediately black.
During boot up, screen goes black soon after the login box is filled in, immediately after the appearance of a series of warning boxes (date & time not set and allow or deny boxes for several processes like cups, smbd, applefileshare, k5bxxx). As said, the screen then blacks out and the computer starts the boot process again, unless I shut it down at the login box stage.
PRAM and SMC were reset without any resulting change. I also installed a new magsafe DC i/o in (thank you iFixit for the procedure!) but it didn’t seem to make a difference, although it seems like the computer gets farther in the boot process with the battery installed than it did earlier (repeated boot cycles often before getting to the login box)
WITH BATTERY DISCONNECTED:
With battery disconnected, boot process finishes but the computer does not keep time/date etc (things controlled by SMC) the next time, if the charger is ever taken off, even just for a few seconds, when the computer is off.
When the computer is off, just attaching the magsafe charging cable initiates a boot chime, sometimes even when the screen is closed. Then, without pressing the start button at all, the computer goes through 1 to 3 chime cycles before the apple screen appears (almost like a PRAM reset) and the machine then boots to completion.
Whole computer seems to lag. Long boot up time, takes a couple of minutes before the USB mouse starts reacting, sometimes also same thing with the trackpad and keyboard, activates only after a couple of minutes.
Anyone have any ideas if it is the logic board or ???
Thanks!
좋은 질문 입니까?
Let’s get a better view of things, install this gem of an app! CoconutBattery take a snapshot of the apps main window and post it here for us to see 기존 질문에 이미지 추가하기
Some of your symptoms point to a worn battery which can pull the system down.
Dan 의
Hi Dan, I would love to oblige, but I keep this machine to run 10.6.8 and coconut starts at 10.7. For what it’s worth I replaced the battery not very long ago…
Lami 의
@Lami - Contact chris (at) coconut-flavour.com ask for the older version, I'm sure he'll send it.
Dan 의