Power button randomly presses itself

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iPhone 3G

iPhone 3G是第二代iPhone。型号A1241，有8或16 GB容量，和炫酷的黑色或洁白的白色塑料背面。修复比第一款iPhone更简单。需要螺丝刀、撬撬工具和吸尘工具。

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Stefan @stefan74670

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发帖于: 2011年11月1日

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Power button randomly presses itself

Hi guys,

Got a randomly rebooting iPhone 3G here that worked fine docked for some reason.

Replaced the battery using the guide found on this site.

Back together the phone worked fine but it kept locking itself and showing the power off slide bar. I have a feeling that the power button presses itself randomly or something.

What can I do to fix this except cleaning the buttons and hoping that that works? Going to try that later today.

Ive cleaned the power button and the power button contacts. The button stil doesnt work. Im trying to take the phone apart again to see if it solves the problem.

Volume buttons work fine as does the vibration switch. Could it still be the flex that is broken or is it more likely the actual button isnt making contact with the flex.

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I have removed cable 5 from the logic board. The problem is gone so next step is to try and take apart the button and clean it or install a new flex.

由 Stefan 完成的 2011年11月2日

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I have removed cable 5 from the logic board. The problem is gone so next step is to try and take apart the button and clean it or install a new flex. — Stefan

Gido Nijenhuis @gidonijenhuis 声誉积分: 821 5 · Answer 1 · 2011-11-01T07:35:37-07:00

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Gido Nijenhuis @gidonijenhuis

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发帖于: 2011年11月1日

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You first need to find out wether it is actually the button itself that is causing the issue or something else. Try this:

Remove the connector #5 which is connecting the power button to the mainboard with a powered phone. Check if the problem still persists:

- Problem is gone → There is a problem with the physical power button. Replace this flex to solve the problem or you might try to disassemble the power button and clean between the metal of the button and the gold traces on the flex.

- Problem still persists → Problem with your logic board. Had this one time before. Ultrasonic cleaned the Logic board solved the problem that time.

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+ good clear explanation.

由 pollytintop 完成的 2011年11月1日

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marc @marc79410 声誉积分: 145 2 · Answer 2 · 2012-07-28T01:21:48-07:00

marc @marc79410

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sometimes the center middle dimple gets pushed out of center. remove and use clear light scotch tape and re install metal dimple back to the center position. worked for me. good luck

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iPhone 3G

Power button randomly presses itself

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