Power cuts out mid-boot (not battery issue)
Hi,
I believe this question has been asked before but I don't think a concrete fix was ever established due to the difficulty in isolating the problem in everyone's machines.
To describe the problem - when I press the power button, it will begin the boot up sequence with chime to grey screen, then apple logo, then the power will cut out.
This will occur with several attempts (3-5 or more attempts), until suddenly it will fully boot and operate.
The issue occurs whether running on battery or AC power, though it "feels" like it achieves full boot more often when AC power is connected. Though I've recently replaced my battery.
Some potential issues I've read include - logic board requires replacement, melted heat sink wire causing a short, dead ram risers, heat paste needing replacement.
Periodic Shut Down/Not Turning On Troubleshooting
MacBook Pro turns on, shows Apple logo or desktop, and cuts out..
Is this a good question?
5 Comments
What year is this MacBook? If it's the 2011 model I'm assuming bad graphics chip issue.
Not sure if it could be the bad tantalum capacitor issue.
by Ben
Early 2009 MBP 17"
by afdes
From further reading I would guess that extreme heat due to Australian summers and poor ventilation have caused weakened or cracked solder - and the fact that it can boot after several attempts means some joints get "warmed up" and bridge again
by afdes
What operating system are you running? What's the history of this machine? This model is NOT know for GPU issues. At what point is the progress bar when it fails? Please download and run Coconut battery and tell us your results:
http://www.coconut-flavour.com/coconutba...
by mayer
I guess since here it's getting hot as !&&*, downunder is getting chilly, right ? Maybe a shorted component needs heated to start properly..a capacitor ?
by arbaman