Power button malfunctioning

[poit57]

I went to my parents' house for dinner tonight, and my mother informed me that her phone just started acting strange today. When I took a look at it, I discovered that the power button is malfunctioning. The button is not physically stuck, as it can be felt clicking in and out as the button is pressed and released, but the phone doesn't respond when the button is engaged.

Nothing happens when the power button is pressed, but instead the phone acts like power button is pressed or held at random intervals. The phone keeps going to standby and waking up on its own, or it is going to the "slide down to power off" screen. When we do slide down to power off, the phone turns itself back on after the shutdown is complete.

Does anyone have any ideas what might be the problem? I actually replaced the digitizer on this phone about 2 years ago, but it has worked fine since. She said that she doesn't remember dropping the phone or doing any other physical damage that would cause the power button to stop working, and that the problem only started today.

 

[akshay_persad]

Sounds like a hardware issue. Are you brave enough to open it up and see if anything is lodged between the power button on the case and the button on the motherboard?

 

[poit57]

I've already ordered a new flex cable to attempt a replacement. I'll check for obstruction when I open up the phone, but I'm not going to do that until I have the replacement part on hand.

 

[poit57]

I received the replacement flex cable and verified that the power button on the original flex cable is the issue. However, it appears that the flex cable is sandwiched between the rear housing and another plastic insert that is glued into the housing. Does anyone know if it is possible to replace the flex cable on this phone, or do I have to replace the entire housing?

 

[Slinkydink]

Hi,
I had the exact same problem.
I had to change the whole casing, which i purchased from EBay.
There is a great disassembly guide on YouTube by a chap calls himself Le55ons.
The whole process was quick and simple.
For me, the trickiest part was removing the screen, and a wide plastic spudger did the trick.
The phone now functions as new, and since my camera housing was scratched, i replaced that as well and the phone now looks as new as well.
Good luck.
Garrickus.
P.S. - I enabled double tap to wake while i was waiting for parts to arrive and this helped a bit.

 

[poit57]

Thanks for the reply. I have ordered a replacement housing. I did the full teardown until I realized that I couldn't get to the flex cable, so I've already got a good idea of how the replacement is going to go.

P.S. - I enabled double tap to wake while i was waiting for parts to arrive and this helped a bit.

Unfortunately, that isn't a viable solution for this phone as the screen keeps turning itself off and on or asking me to slide down to power off every few seconds.