It only serves to allow the battery capacity meter to accurately track the battery capacity.
The nature of the lithium battery chemistry does not require periodic cycling to maintain capacity.įurthermore, the periodic cycling described in the apple documents listed above Post) does not have an effect on the battery chemistry. What shall I try next? I can boot up to Internet Recovery now with claussens reset method, but every few minutes or so I have to do the SMC reset.No. And this model is notorious for cracking plastic around the ports, so the charger can physically fit onto the MagSafe port in a few different ways that are not appropriate. Then again, my wife is not that gentle with her computer and can often be found abusing the cord by letting it bend. So if it has failed, it must have done so overnight and quite drastically. It has has incredible life and until this week, had more cycles left on it than the battery I bought for my MBP from MacSales two years ago. This computer has an OEM battery that was purchase with the computer in 2009. STRANGELY enough, if I then remove the charger while the computer is running, the computer is still able to run for a few minutes. If I boot up with the battery disconnected, then plug the battery in, it still gives me the same report. In Terminial I have run ‘pmset -g batt’ and it tells me the computer is drawing from AC Power, and the Battery is disconnected. I am able to run Hardware Test, with no errors detected.
During the process of figuring this out, the screen displayed some very strange patterns on boot, the inside side of the MagSafe port area was sparking one time, and every time I get it to start up then the fan runs at a very high speed.
APPLE MAC PRO COMPUTER POWER CORD PLUS
So changing the charger PLUS doing the SMC reset specifically as victorclausson suggested gets the computer to boot, so long as the battery is disconnected. change charger to a newer one, with pins not pushed as far in confirmed this model is to use 60W charger move MagSafe charger port back out to just-behind case Just last week it seemed like the charger top was having problems connecting, got it to work for a few minutes, and then suddenly it stopped working at all (nothing on screen, no fans, no lights of any color on charger tip of computer). I am having a similar problem with my 13” 2009 MacBook (white, unibody, A1342).
Once on, the computer appears to work absolutely perfect. attempted to do an SMC reset (although I don't see any sign of rather it happened or not)ĭoes anyone know why the power button would turn the computer off, but won't turn the computer on? This is even though removing the mag safe, removing the battery, and then reconnecting the mag safe power supply does turn the computer on automatically.ran Apple Hardware Test in short and extended mode without any issues identified,.repaired Disk and Permissions in Disk Utility,.tried jump starting the computer on with the jumpers but this did not work,.replaced the keyboard twice (the second and third keyboards work correctly),.replaced/soldered a new keyboard connector on the logic board as it had a missing pin,.Yosemite OS X 10.10 on mid 2010 MacBook Pro 15" The power button turns the computer off, but not back on. When the battery is plugged in, the 'charging' LEDs on it do not light up or blink and thus the battery does not charge. 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. 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? 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. 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. 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.
APPLE MAC PRO COMPUTER POWER CORD SERIAL
I have an A1226 15" MacBook Pro (mid 2007) with serial number: W872218YX92. 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.
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