I think my SMC is dead...
A1229 MacBook Pro 3’1
17” 2.4GHz Intel Core 2 Duo
6GB 667 MHz Ram
1TB Crucial SSD / OS 10.11.6
Recently i’ve been having a number of issues that suddenly started occurring one evening, for no apparent reason.
So first off, I use this machine without a battery. I rely on the AC plugged in. I had been using the machine for half the day fine with no problems. In the evening though, it wouldn’t turn on. I realised the MagSafe light was not on at all (usually lights green).
I assumed the AC was dead so got a replacement. The light showed ‘green’ but the machine still refused to turn on. My worry at this point was a dead logic board.
These worries were alleviated eventually as i’d managed to turn it on by googling SMC fixes (holding down the power button for 10 seconds with the MagSafe disconnected / power cycling). It boots fine but i’ve noticed some VERY odd behaviours;
- The MagSafe light is OFF in operation
- The fans are constantly at full speed from the chime
- The keyboard backlight does not work
- The machine takes long to enter sleep on closing, only sleeping after the set time
- screensaver seems to be slow to initiate and is a little pixelated
- The same process has to be followed to switch the machine back on once it’s been powered down (using power cycling method)
- The machine also takes fairly longer than it should to restart when this option is selected
I've used the PRAM method numerous times and attempted the SMC fix, without joy. I’ve also tried booting in safe mode but the result is the same.
I’ve not long installed a SSD in place of the old HDD and upgraded the OS to El Capitan just to give this machine a little more life. I can’t think of what the problem could be, but the behaviours I think point to the SMC. I’ve checked the firmware / SMC version and boot ROM and these are also up to date.
Any ideas on a fix please?
Thanks in advance.
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