Power Button isn't working correctly anymore

[DH2706]

Hello,

after the touchscreen of my Sony Xperia Z broke down, i decided to repair it by myself with an old Sony Xperia Z, which was damaged by water. So I took the battery and mainboard of the phone with the broken touchscreen and put it in the phone with the water damage. All worked fine, and the phone is working, except for the power button. If I press the button only for a moment, the phone goes to sleep, but the screen pops up again a few seconds after. Sometimes also the shutting down menu pops up.

So my question is if there is a way to repair that by myself (maybe I damaged a cable), or if I should go to a repair shop?

Thanks for answers.

[Thommo]

Have you aligned the buttons correctly as it sounds like the power button is been intermittently pressed probably due to the misalignment

[DH2706]

I realigned the battery pack 4 times because of this Problem, could it be something else than the battery pack?

[Thommo · Accepted solution]

The power button there'll be a circuit type board running along side the buttons and if they aren't aligned correctly then slight pressure in the wrong place will cause the power button board to think you have pressed the button

[DH2706]

I didn't Do anything at all with them, but maybe they changed their Position, when I tried to Put the battery out?, if this is the problem, Do you know how much a repair costs?

Thanks for replies

[Thommo]

Sorry I don't - you could just take it apart and check the alignment along the edge of the fitting inside around the power button and volume buttons etc

[DH2706]

Volume Buttons are working pperfectly, thats why i am wondering so much about the Power button