What could be damaged when power button doesn't work?
My iPhone 3G fell to the ground and after that the power button fails switching standby and power on/off. The button clicks like before the failure.
I followed all steps from your repair guides to open the case until I found and released the power button. The real switch inside is clicking if pressed but the ribbon cable connected to it seems to have a small scratch at one side ... maybe the wiring inside the ribbon is cut?!
What other reasons are possible that let the power button fail? And if the wiring really is broken, is it replacable?
Udo from Bonn, Germany
Is this a good question?