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Apple iPhone 5s, 10 Eylül 2013 tarihinde duyuruldu. Bu cihazı tamiri, daha önceki modellerinkiyle benzerdir; tornavida ve plastik açma araçları gerekir. GSM ya da CDMA olarak, 16,32, 64 GB kapasiteli Gümüş, Altın ve Uzay Grisi renklerinde mevcuttur.

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Strange Power Problem and Boot

Hi All,

I have here one iPhone 5s that dont charge and dont boot even with an charged battery.

Laptop connection dont detect the iPhone or even charge it.

I replaced the battery for another and he starts boot but just shows the apple logo and nothing happens.

I changed the MotherBoard to another housing and same problem, no charge and no boot (Just Apple logo)

There is someone with same problem?

Best Regards

Yanıtlandı! View the answer Ben de bu sorunu yaşıyorum

Bu iyi bir soru mu?

Puan 0

Yorumlar:

Any more ideas?

Its strange because usually we have power problems but not boot problems.

If i dont have boot problems i'm for sure that is the U2, but is strange the problems with the boot and the Computer dont detect the iphone.

Any more suggestios or same situation?

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Sounds like the Power IC on the board itself. Also known as U2 or Tristar.

Bu yanıt yardımcı oldu mu?

Puan 2

Yorumlar:

I thought in that, but i dont usually get the 3 problems when is the U2.

- No Charge

- When Power On with an charged battery dont fully boot, stays in Apple Logo and sometime restart.

- Dont Connect with computer

What the customer said is that, at night he put the iphone to charge and on the morning the iphone didnt power up.

When i received it the first thing that i did it was try to turn on with an new and fully baterry and he power up but stays on boot (Apple Logo).

Do you have ever have one case in same situation?

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Yes this sounds like a classic Power IC U2

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Analyses

Symptoms of U2 charging logic ic failure:

Fake charging - NO - No charge at All

No charger detect - YES

Inability to charge a stone dead battery, but can charge a partially charged battery - NO, No Charge at All

Very rapid battery drain - Maybe, Cant test

Heat at U2 ic chip - NO, Dont feel no Heat

Auto power on at battery reconnect - No, No Auto Power

Inability to restore due to dropped usb connection - Yes, no USB Connection

Some subset of 'blue screen' problems in iPhone 5s and possibly mini retina - Yes, Sometimes Rebot after an bluescreen

So what we have:

- Some subset of 'blue screen' problems in iPhone 5s and possibly mini retina - Yes, Sometimes Rebot after an bluescreen;

- Inability to restore due to dropped usb connection - Yes, no USB Connection

- No charger detect - YES

So, i have three Symptoms of U2 charging logic ic failure, maybe really the U2 Chip, i will try to change it

Bu yanıt yardımcı oldu mu?

Puan 1
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Paulo Silva sonsuza kadar minnettar olacak.
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