Camera button do not work

[UweK]

Camera button don't work neither pressing button to start camera app nor pressing the button to get autofocus in the camera app.
Is there any software method to determine its that hardware or software problem? tryed to check the button in the engineer menu by "keyboard & switches" tests, but nothing happened when I press camera button.

[_alexdon_]

You may need to perform a software repair using PC Companion.The process will erase all internal memory.You might need to charge your device for about 1-2 hours before so the device has at least 60% battery.

Make sure the device is not connected to computer or laptop and turned off (sometimes you have to press power button and volume up until the device vibrates 3 times or on some devices you have to press the small button near the SIM tray or on the back of the device).

Open PC companion->support zone->phone/tablet software update->repair my phone/tablet blue highlighted.Follow the steps given,do not connect your phone until prompted to press volume down while plugging USB cable. If PC companion does not start the repair process, you might need to run it in compatibility mode with Windows 7 (in some cases XP).

[Uliwooly]

how about 

settings > apps > all > camera > clear data

are you pressing the button all the way down or just half pressing it? 

[UweK]

That was the first thing I read at xda and other xperia forums, but nothing has changed.
I press the button all way down and half.

[Uliwooly]

You should contact your local Xperia Care

http://support.sonymobile.com/global-en/contactUs/

[UweK]

Tried to repair the smartphone by PC Companion just half an hour ago. Nothing has changed (((

[Uliwooly]

Then it's probably a hardware issue.