I had the power button broken. Tried two differen curcuit. They work great for power button problem, but now the vibrator is not working with both of them. I really don't know whatelse I can do to solve the problem. I've also tried a new vibrator, but it didn't work.

it might look like a contact problem, since the vibrator sometimes is working, depending on, for instance, phone inclination. However, I checked all screws several times and they are tightened. I tried hard reset and also deactivation/activation of vibration in settings/general/accessibility. Nothing :(. Does someone have any idea?