Strange fault after Rear case replacement

Question

iPhone 8

2017年9月に発売されました。モデル番号はA1863、A1905。GSM もしくはCDMA/容量は64か256GB/ゴールド、シルバーとスペースグレイ

873回答すべてを表示

Allan O'Brien @allan1875

評価: 11

投稿日: 2021年5月6日

オプション

Strange fault after Rear case replacement

Hi all,

I repairs phones and tablets regularly. My Dad is an IT tech and ex microelectronics apprentice. He recently had a screen repair on an iPhone 8 which went fine but they also asked for the rear glass to be replaced so he went ahead and replace the whole chassis/rear frame.

The phone will no longer power on. I have done a full teardown and rebuild and I cannot find a single fault.

I have also tried a new battery, however it has been sitting for a long time so I’ve ordered another just incase.

My Dad is extremely careful with pry tools etc, probably more careful than myself who can be a bit ham fisted.

Can anyone think of a reason why the phone will no longer switch on after a rear case replacement? This is really frustrating me trying to work this out and any help would be much appreciated.

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

2 件のコメント

Good news, I have now managed to get the phone to boot. I think I’ve identified the short as the diversity wifi antenna, although I don’t really know why if I am honest.

Now run into another problem where the phone will only charged when switched off. This is a bit of a nightmare phone !

Allan O'Brien さんによる2021年5月14日

Oh thats a new one on me there mate. Sounds like something else is shorting out the charge port when the phone is powered up.

Jon Williams さんによる2021年5月14日

コメントを追加

1 件の回答

ベストアンサー

Jon Williams @eazy_pc_repairs

評価: 445

6

2

1

投稿日: 2021年5月6日

オプション

I have a similar issue with a customer iPhone 8 Refurb. Put the motherboard into the new housing and connected the charger flex and nothing. But if I install the flex outside of the housing just to test phone boots.

I am unsure myself on whats the issue but I am assuming the housing is shorting somewhere. I wonder if you have the same issue :)

Try it with the bare minimum in the housing, Charging Flex, Logic Board, Battery and Screen. Try to power up without the charging flex connected then try with it connected. If it boots add parts one by one till you find the issue

このアンサーは役に立ちましたか？

はいいいえ

スコア 1

2 件のコメント:

Thank you, that sounds perfectly reasonable and pretty much the only logical answer. Have you tried another housing?

Allan O'Brien さんによる2021年5月6日

I am awaiting my supplier to send another. I will happily reply back if I find anything else out, But I would seriously suggest going with he bare minimum and working your way up to a fully built phone testing after you add each component

Jon Williams さんによる2021年5月6日

コメントを追加

Good news, I have now managed to get the phone to boot. I think I’ve identified the short as the diversity wifi antenna, although I don’t really know why if I am honest.

Now run into another problem where the phone will only charged when switched off. This is a bit of a nightmare phone ! — Allan O'Brien
Oh thats a new one on me there mate. Sounds like something else is shorting out the charge port when the phone is powered up. — Jon Williams
Thank you, that sounds perfectly reasonable and pretty much the only logical answer. Have you tried another housing? — Allan O'Brien
I am awaiting my supplier to send another. I will happily reply back if I find anything else out, But I would seriously suggest going with he bare minimum and working your way up to a fully built phone testing after you add each component — Jon Williams

iPhone 8

Strange fault after Rear case replacement

1 件の回答

回答を追加する