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Repair information and guides for the CDMA version of the fourth generation iPhone. Model: A1349 / 8, 16, or 32 GB storage capacity

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Question Closed

How to determine which component is broken?

My home and power buttons do not work.

Ideally the cheap solution would be to replace the ribbons if I'm not mistaken.

How can I determine whether the logic board is broken or the ribbons are dead? It might even be both! Is there any way to tell?

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1 Answer

Most Helpful Answer

What started the problems? Water, dropped?

The power switch is part of an assembly

This is the home button

Is it possible that it is just the power button not sitting right or damaged causing the switch not to be activated?

Might be worth looking at THIS guide and also THIS one

iPhone 4 Verizon Power Button Image

Guide

iPhone 4 Verizon Power Button Replacement

Difficulty:

Difficult

iPhone 4 Verizon Home Button Image

Guide

iPhone 4 Verizon Home Button Replacement

Difficulty:

Difficult

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4 Comments:

The cause of the problem is water damage.

The buttons feel and click normally but do not function. I've already bought the assembly for the power and the home button. Hopefully that will do the trick. If not, I can assume it's the logic board, right?

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Check out this article and consider disassembling/cleaning the logic board etc. May well resolve your issues

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I've already disassembled and cleaned the logic board according to that guide. The home and power buttons are still not functional. Is the logic board trashed at this point? Is there nothing left for me to try?

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Ok lets take a step back... what happens if you connect the phone to the PC with the standard cable. It should power up without you touching anything on the phone.

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