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モデル番号A1502/2.6GHz(Turbo Boost使用時最大3.1GHz)もしくは2.8GHzTurbo Boost使用時最大3.3GHz)デュアルコアIntel Core i7、4MB共有L3キャッシュに変更可能

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MacBook Pro keeps dying, but all diagnostics normal. Appreciate help!

My 2014 MacBook Pro retina (i5 2.6 GHz, 8 GB RAM & 256 GB SSD). Was not dropped, no water damage is exhibiting power problems.

It started with not being able to turn on, then only the fans whirred, then I performed a SMC and NVRAM reset and the laptop worked, but would die consistently after approximately 5 minutes of use.

I took it to the Apple Store and all diagnostics (software and hardware) came back as performing and I confirmed no malware. We wiped the OS to see if there was some software issue not picked up and the laptop seemed to function normally without dying for approximately 10 minutes. I thought I was fine.

However after I brought it home, my laptop went back to dying and then the problem was exacerbated and would exhibit lengthy periods where it wouldn’t even turn on.

I performed a SMC reset and my laptop would turn on but die in 30 seconds. I went to the Apple Store again and we reinstalled the OS for a 2nd time. It again seemed to work for an extended period of time but this time showed my battery at 0% (but still ran as if it was at 100%). I performed a SMC reset to see if that will kick my computer into properly reading the battery charge and my computer then started dying after 30 seconds. We took one last step to reset the battery in the laptop, but this did not work. I was given the option of sending it in for repair at $475+tax, but this doesn’t feel like a hardware issue to me. That is because the way the computer dies is very consistent (with respect to how long after it turns on) and only dies on battery and never dies when charged.

I would think that if there was a part that was broken:

  1. The laptop would not work at all regardless of on battery or charged.
  2. There wouldn’t be such consistency in timing to death (the laptop would in theory either not work at all or would work until the part shifts in a way that causes the laptop to die).
  3. The laptop wouldn’t stay alive before performing a SMC reset (change in software caused it to die versus stay alive).

On the flip side, I completely understand that I wiped the computer and reinstalled the OS twice so how could it possibly be a software issue?

Long story short, apparently battery issues are very black and white and I was told it wasn’t a battery issue, so they’re trying to get me to replace the main logic board (which might fix it but would be entirely expensive), but it feels to me there should be an easier fix.

TLDR: laptop dying consistently after 30 seconds. Wiped and reinstalled OS twice, but problem still exists (after an initial first boot of staying alive for forever). If hardware, think it shouldn’t work at all, wouldn’t differentiate between battery and charged, or would have a more random time to death. All diagnostics normal.

Curious if anyone has experienced or can recommend guidance?

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Your logic boards is not the issue here! Your battery is! "battery has well over 1,000 cycles" review Apples own specs on the batteries lifespan: Determine battery cycle count for Mac notebooks Your battery needs replacement!

Here's the correct price you should be paying Apple: Mac Service and Repair 13-inch/15-inch MacBook Pro with Retina display - $199 US

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Dan is correct. I must have missed that section of the comment. The battery should have under 1000 cycles or else it is considered ready for servicing.

さんによる

I think I misunderstood. Since I don’t have the laptop I’m going on memory, which is partially limited. I wrote superflously, but I meant to imply my cycle count is normal as per the Apple employee. I was told explicitly there was nothing wrong with the battery and it did not need to be replaced. Sorry for the confusion.

さんによる

@justaname - I would recommend you double check, I hate for you to get a new logic board when you only needed a new battery.

If you tend to run your system on battery alone for long periods then I think you're due for a new one after four years.

さんによる

Appreciate all the feedback. Unfortunately the laptop is with Apple repair so I’m at their whim now. That being said they’re going to check for a battery replacement first and then logic board replacement. Do you have any color on why my laptop may be responding so strangely to a mechanical failure (as I described in the other response thread)? It just seems to me that it’s a software issue not recognizing the battery under certain circumstances, but I understand that’s incredibly not likely because I reset the OS twice...

さんによる

1) Why would there be a difference between performance while plugged in and performance while unplugged (if it’s not a battery issue)?

ANS - SMC is the brain of the brain! It controls and gets input from many sources which then effects the system. So when SMC see the battery is not able to run at its full potential it will reduce the CPU's speed when its running on battery. This is a sign of a failing battery and it also could be a bad MagSafe adapter (fake one) and/or MagSafe connector (DC-In board) as well as the charging logic on the main logic board. Unless you properly diagnose the issue after first replacing the battery you just don't know.

2) If there was a faulty mechanical part then why would it work properly for the first time after reinstalling the OS (except for saying battery is 0%)

3) Why would it change after performing a SMC reset?

4) Then why it wouldn’t it have a more random distribution of time to death vs consistent 30 seconds or consistent 5 minutes depending on how I set things up?

ANS -The OS saves information in temp files as well as NVRAM, if you re-install the OS or reset SMC these settings are lost until the SMC realizes there is a problem. SMC sees a problem and then reacts so depending on what transpired just before as well as if you have it on AC or battery power it will react differently.

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Hello Andrew!

You can do a quick check on your computer just to get some details on what may be occuring and see if they missed something in the diagnostics. Plug in your MacBook and begin by clicking the Apple logo in the top left corner of your MacBook. Then, hold down the option button, select System Information… and wait for a window to appear. Then on the left side of the computer select power. This should display power information. Now look for health information. This should show the condition of the computer and the cycle count. If the condition says normal and the cycle count is below 1000, your computer battery is functioning properly. If the condition says something other than normal or it is above 1000 it may be functioning improperly. This means that it requires a hardware repair. If your computer says “Service Battery”, use a safe power adapter for your computer to prevent more serious issues. View Apple’s support website to learn more about MacBook batteries. If your computer’s battery is functioning properly, the only other thing you can do is open your computer’s activity monitor and see if there are any applications draining battery life or damaging your CPU. Otherwise, it may need some further investigation by an Apple Store employee. This issue seems to be beyond your repair. It may be much deeper into the computers software.

Hope all goes well!

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Hi. Thanks for the response. I should clarify that I don’t have the laptop at this moment. It’s with Apple and I have the option to turn down the repair if it turns out to be a main logic board repair. That being said:

I did check previously and the battery has well over 1,000 cycles and is running at a normal capacity (90+% after 4 years of use). I’ve been to the Apple store twice and each time diagnostics tests on the hardware and software show normal. I’ve also reinstalled the software twice. I’m just trying to understand why my laptop is dying with such consistency if it’s a hardware problem. It’s almost like an app crashing when you press a certain button but for a laptop and dying. But if it was a software issue, then that seemingly should hve been resolved by resetting the OS.

さんによる

Ok. Thanks for clarifying! Now that I think about it, a logic board repair, although it is expensive, might make sense because something might be messing with the CPU like another component failing to operate correctly. I would say that the frequency of this computer dying is very unusual and it probably isn't a battery issue. If Apple thinks you should do a logic board repair, do it. Replacing the main component of this computer should remove any issues. That's pretty much the only option besides purchasing a new computer. Hope that helped!

さんによる

I guess my questions really boil down to: 1) why would there be a difference between performance while plugged in and performance while unplugged (if it’s not a battery issue)? And 2) if there was a faulty mechanical part then why would it work properly for the first time after reinstalling the OS (except for saying battery is 0%) and why would it change after performinga SMC reset? And then why it wouldn’t have a more random distribution of time to death vs consistent 30 seconds or consistent 5 minutes depending on how I set things up?

さんによる

Also please note my comment to the other responder. I misunderstood your comment about cycle count. Mine was within normal per the Apple employee for the amount of time I’ve had it.

さんによる

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Andrew kugler さん、ありがとうございました!
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