修理を始めるには コミュニティ ストア

iPad mini4のWi-Fi対応バージョンの修理ガイドです。モデル番号はA1538。2015年9月9日に発表されました。iPad mini4はiPad mini3の後続モデルです。

97回答 すべてを表示

オプション

Screen Turn off after 1 Second

Hi All,

I've just replaced my iPad Mini 4 Battery and also LCD Panel (wake flex cable has been soldered). When I tried to turn on the iPad the Apple Logo came up for 1 Second and the screen goes black. Tried to press and hold the power button again after awhile, I could see the screen showing Hello (iPad Setup Page) and same thing happened it goes off after 1 Second.

I'm sure the iPad is powered up and I can hear the charging sound when I plug the charging cable.

Please help me! I'm not sure what I did wrong :(

回答がありました！ 回答を表示 同じ問題があります

この質問は役に立ちましたか？

はい いいえ
スコア 0
3 件のコメント

Replayed the video several times and I noticed there's a dark patch on top left corner during that 1 second of screen time, this is indicative of a defective LCD screen. In any case, follow @refectio guide to troubleshoot.

さんによる

@sammyz good catch!

さんによる

Thanks @sammy !

さんによる

コメントを追加

1 件の回答

フィルタ：
参考になった順 新しい順 古い順
ベストアンサー

オプション

It’s very important to always disconnect the battery before disconnecting/reconnecting the screen assembly. The issue is that the LCD connector has pins that have high voltages (i.e. the backlight is ~20V) and ground in very close proximity. When you fumble around trying to line up the connector plug to the receptacle, you can short out the voltage rail and cause damage to the components in the backlight circuit. If you’re lucky, then only a backlight filter is damaged but other times, the entire circuit could be affected. Either way, this type of repair requires micro-soldering and isn’t really a DIY repair.

To test for this, plug your device into a charger or an iTunes enabled computer. Then shine a bright flashlight on the screen. If you can see a dim image, then the backlight circuit has been damaged. If you can’t see an image at all, then it may be the LCD circuit that is damaged.

You can connect the original, cracked screen to confirm this. If the original screen has the backlight on, then the replacement screen has an issue. If the original screen also doesn't show the backlight, then the backlight circuit is blown.

If iTunes doesn’t recognized the device than the problem is more than just a screen or backlight issue.

このアンサーは役に立ちましたか？

はい いいえ
スコア 4

2 件のコメント:

Hi Minho,

Appreciate the detailed explanation on the possible situation.

The LCD Panel you see on the video is actually the Original Panel which was damaged at the right side corner so I ordered a New Panel for replacement. When I replaced the New Panel there isn't any activity when I turned it on so I thought it might be a Dodgy Panel which is way I switch it back to the Original one before taking the video.

Let me try out the mentioned troubleshooting guide you've provided and see if it's a replacement screen issue.

Just wanna confirm that the worst case would be the faulty LCD Panel right? Will there be a possibility that the logic board is faulty too?

Regards,

Edmond

さんによる

Both options are possible. Damaged backlight circuits during repairs is a common occurence so don't rule it out.

さんによる

コメントを追加

回答を追加する

Edmond Teo さん、ありがとうございました！
統計データ:

過去 24時間: 0

過去 7 日: 5

過去 30 日: 15

今までの合計 514