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2015年11月11日にAppleより発売されたハイパフォーマンスタブレットコンピューターです。

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iPad Pro 12.9 1st gen auto shutdown and restarts while plugged in

hi guys.. this is my first time here… i got a iPad 12.9 1st gen and when i’m using it sometimes it just dead suddenly, when plugged in to charger it will starts up again and always reboots on Apple logo, failed to load to m

i unplugged it, wait for 10 minutes plugged in to charger, it will starts normally, i unplugged the charger… suddenly after 1 minute it was dead again…. battery health checked with 3utools its 90% capacity..

i was thinking of changing the battery .. but i suspect is there something wrong besides the battery?

is auto shutdown and restarts on Apple Logo signs of a broken battery?

i did try to restore using iTunes, it went well but after i unplugged the lightning cable from charger or computer it will suddenly dead …

maybe some of you guys have the same problem? did changing battery fix it?

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after restoring to 12.2 a couple of times .. the restarting problems with Apple Logo only is now fixed… i can finally boot up to full menu.. with charger plugged in…

when i’m using it while plugged in to a charger it will drop from 70% to dead and reboot itself to 1% capacity… pull out the lightning cable and plugged in again it will goes from 1% to 70%

if i use it again it will restarts and shows 1% capacity again …

it always restart and can startup until i can access the menu…

i have tried to charge to 100%, restarts occurs when around 70% - 80% while plugged in with charger..

if the battery is broken i think the output of the charger can keep the iPad Pro working without restarts?

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Battery capacity unfortunately is not enough to tell battery is in good shape..if it was left drained a few times it might show a good nominal capacity and be nonetheless in bad conditions and unable to supply the needed current. These portable devices are not designed to run off power cable if the battery is dead. In my opinion a battery replacement should be attempted as first option. If that wouldn’t solve the issue the symptoms might point to a board failure too, especially if the iPad was charged with aftermarket cables, but that would require microsoldering skills and should be assessed only after a known good battery has been tried.

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Aaron さん、ありがとうございました!
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