Why is iPad constantly rebooting post battery replacement? See video

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iPad Mini 2 Wi-Fi

Wi-Fi版的iPad Mini 2指南。2013年10月22号发布同年11月12号上市。iPad Mini 2就是配备了Retina显示屏的iPad Mini，在更小尺寸的的7.9寸屏幕上拥有和iPad Air相同的像素。

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Eddie de la Rosa @edd1e

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发帖于: 2020年10月24日

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Why is iPad constantly rebooting post battery replacement? See video

Problem: iPad Mini 2 just turns off seconds after turning on and then continues to reboot. At each alternate reboot the screen flashes red before shutting off and turning on again. Please see the short video. It shows me turning the iPad Mini 2 on and shows the iPad rebooting several times.

I am able to turn off the iPad Mini 2 by holding down the power button.

Context: I just replaced the battery of this Wi-Fi only iPad Mini 2.

Possible Useful Info: This iPad Mini 2 was repaired previously. When I opened it up the LCD Shield was bent and screws meant to hold down the LCD Shield actually went through the the metal LCD Shield.

When I received the iPad the battery was completely swollen and had lifted the front screen aka digitizer and did not turn on.

The owner of this iPad Mini 2 was not 100% sure it was a battery issue although seemed like the likely culprit.

My thanks to the iFixit community for your help.

Update October 26, 2020:

I’ve added photos of the motherboard. Both as it was when I installed the battery and then after taking out the motherboard itself.
Additionally owner did say that the reboot cycle with the red screen did occur before the iPad died from a bad battery. It had a charge battery signal with the constant reboot, so they thought it was just a battery issue. Obviously it was not.

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Do you by any chance know the OS it has? I recall that there was a bug on some version of iOS 10 that caused some devices to constantly restart itself on boot like this (had a 5S with the same processor do the same, ended up restoring and updating it to iOS 12).

I doubt it would be a problem with the LCD shield since if it was indeed faulty atleast you would've seen something other than the apple.

由 amatsuda 完成的 2020年10月24日

Amatsuda, The owner does not remember what version of iOS. They haven’t used it for at least a year

由 Eddie de la Rosa 完成的 2020年10月25日

@edd1e I guess that was at my fault. Realized it wan't even an issue with the software (techincally).

由 amatsuda 完成的 2020年10月30日

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Minho @refectio

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发帖于: 2020年10月25日

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Roman has made an excellent suggestion but to me, the red flash is worrisome; this is usually associated with NAND issues. The NAND memory IC would have to be de-soldered, re-programmed and then reballed. Certainly not a DIY fix.

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Would be willing to give it a try. Nothing to lose at this point and I might learn something regardless of outcome. I've uploaded pics of the logic board. Thank you for your response.

由 Eddie de la Rosa 完成的 2020年10月26日

All the magic is occurring underneath the shiny shield.

由 Minho 完成的 2020年10月27日

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Do you by any chance know the OS it has? I recall that there was a bug on some version of iOS 10 that caused some devices to constantly restart itself on boot like this (had a 5S with the same processor do the same, ended up restoring and updating it to iOS 12).

I doubt it would be a problem with the LCD shield since if it was indeed faulty atleast you would've seen something other than the apple. — amatsuda
Amatsuda, The owner does not remember what version of iOS. They haven’t used it for at least a year — Eddie de la Rosa
@edd1e I guess that was at my fault. Realized it wan't even an issue with the software (techincally). — amatsuda
Would be willing to give it a try. Nothing to lose at this point and I might learn something regardless of outcome. I've uploaded pics of the logic board. Thank you for your response. — Eddie de la Rosa

Roman Prochazka @pomikoli 声誉积分: 801 5 · Answer 1 · 2020-10-25T08:05:26-07:00

Roman Prochazka @pomikoli

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Hello Eddie,

Open the iPad and have a look around the battery connector, there should be tiny little components around it. If one of them is missing it would cause the iPad to reboot by itself. If the shields were off already it could mean that there’s more faults with it. Would help if you could post pictures of the motherboard

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I've uploaded pics of the motherboard. Thanks for your helpful response. Hopefully this helps. Thank you for your input.

由 Eddie de la Rosa 完成的 2020年10月26日

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iPad Mini 2 Wi-Fi

Why is iPad constantly rebooting post battery replacement? See video

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