MacBookPro does not power up on AC power or battery.
I've noticed a number of "My Macbook Pro won't turn on" posts here, but my symptoms seem to be different (read: worse) than the other posts that I've read, such as this MacBook Pro no startup sound, and not able to start.
Here's what's going on:
I have an A1226 15" MacBook Pro (mid 2007) with serial number: W872218YX92. I can't get it to turn on; whether it's plugged into the AC adapter or on a battery, I get no visible or audible response from the machine when I push the power button--none of the lights turn on, none of the fans spin, etc.
I've read about the nVIDIA 8600GT issue, but I don't get any response from the machine at all, so I'm not sure if that's what the problem is. The other thing I've read could be at fault is the 'Left I/O' board', but this thing won't turn on when using AC or a battery. One thing I haven't tried yet is to open it up and check the top cover power switch; is the power switch something that frequently breaks?
Lastly, when the MagSafe adapter is plugged into the machine, the LED on it always glows green--whether or not the battery is plugged in. When the battery is plugged in, the 'charging' LEDs on it do not light up or blink and thus the battery does not charge.
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In less than an hour I went from dead to everything running great.
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из Paul May
It's NOT the logic board. You'll find it's the small power board that has the USB, and magsafe connector. You can pick them up for $12 on ebay. I had 2 that went and both work fine now.
@LOL - There are a few different causes. be careful here as your answer is just one possibility, without doing the diagnostic process it still could be something else.
Hey Dan, Obviously. My point is that the power board is worth swapping first as it's way way cheaper than the logic board.
Do you have a link so I can locate the small power board as I can't seem to find it online.
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