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2.2 GHz (Turbo Boost 最高可达 3.4GHz), 2.5 GHz (Turbo Boost 最高可达 3.7GHz), 或者 2.8 GHz (Turbo Boost 最高可达 4.0GHz) 四核 Intel Core i7 处理器 ,配备 6MB 共享三级缓存。

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Power Button not working after Battery Replacement

2015 15” Macbook Pro A1398

The battery was swelling, so I purchased the iFixit replacement battery kit, and enlisted a tech-savvy coworker to replace the battery.

Everything seems to have gone well, nothing seems to have broken in the process, everything seemed to be connected correctly.

Upon plugging in the computer to the MagSafe adapter it turned on immediately.

However, I found that the Caps Lock key light no longer illuminates (caps lock does work, just no light). More importantly, the Power button (part of the keyboard) no longer works at all.

I shut down the computer (from the Apple menu, did not force shut down) and I let it charge overnight as per the iFixit instructions. But as I said, the Power button does not seem to work at all anymore.

Unable to reset SMC because the power button does not do anything. No fans, no signs of life apart from the light on the magsafe adapter. As far as I can tell, after shutting down, the only way to get the machine to turn back on is by opening it up, unplugging the battery, plugging it back in, and then closing the case and attaching the MagSafe adapter, in which case it does immediately turn on. But, after it is shut down, there seems to be no other way to get it back on than repeating this procedure.

Need to figure out why the power button is not working (caps lock light is not critical for operation, but may be a clue). All other keys and keyboard backlight were functional.

Also I noticed that for a short time, all mouse clicks were interpreted as command clicks. Please help!

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Hi - did you ever fix this? I know it was long ago but I have just replaced my battery and trackpad on a MacBook that was previously working fine and now have almost the same symptoms. No power key or keyboard illumination keys. Otherwise fine. Thanks!

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Hi, I ended up taking the laptop to the Rossmann Repair group in NYC. They quickly determined that one of the ribbon cables had been reconnected poorly and the corner was folded over itself, which had affected the two contacts for the power button and leds which are on the edge of the cable connector. They fixed it within 2 minutes and for no charge. Highly recommended if you're near a Rossmann Repair center.

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Thank you. I opened up the computer and cleaned the keyboard connector. The ribbon looked fine. All the keys work apart from the power key. A couple of years ago I had a few failing keys and was about to scrap the computer but I thought it was a shame as I'd added a SSD and it was otherwise fine so I had the keyboard replaced. It worked fine until I changed the battery. Perhaps I'll change the battery again - it might be the problem

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1个答案

Your symptoms imply the MacBook Pro 15" Retina (Mid 2015) Trackpad Cable is damaged. Its not uncommon to need to replace it as well when the battery swells.

You should also inspect the keyboard logic board connector pins, make sure they not are damaged.

Update (08/16/2020)

Sorry I wasn't clear, check the keyboard cables connection. Sometimes the pins get damaged.

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You’ll need to install this app CoconutBattery it will allow you a good view on what’s happening with your systems battery and MagSafe charger. Post a snapshot here for us to see 在已经存在的问题里加入图片

MacBook Pro 15" Retina (Mid 2015) Trackpad Cable图片

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MacBook Pro 15" Retina (Mid 2015) Trackpad Cable

$19.99

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Thanks for the quick reply! It's understandable given the proximity of the trackpad cable and the battery, but how would this affect the power button on the keyboard? When the computer was on, the trackpad was functioning normally (aside from the command clicking issue, which I suspect is software related because I also tried with an external mouse / dedicated left click button and it still came up as a command click.)

Also, I forgot to mention, I realized after charging overnight that the magsafe indicator light was green the whole time, as if the battery was already charged, it never turned orange.

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