non-working buuton in K750i

[AGico]

In 5-10 minutes after phone switch-on keyboard (7,8,9, a return key, and <) cease to work.

Flashing does not help

If to switch off phone at least on 30 mines, then to include back - and again suffices only for 5-10 minutes of normal work. Then again keys do not work

What can be? maybe phone partially hardware dead?

[hELLISh]

I think its hardware problem. You must check keyboard foil, keyboard flex, keyboard connector and ESD IC.

[icevolley]

yeah sure is hardware problem maybe your dealer can fix it

[unjor]

Well your phone has got a hardware problem and since it involves the < (left key) of your joystick, the problem actually lies on your joystick. Have it replaced and if it wont work still that's the time you will have to change also the keypad IC.

[JeNeI]

In 5-10 minutes after phone switch-on keyboard (7,8,9, a return key, and <) cease to work.

Flashing does not help

If to switch off phone at least on 30 mines, then to include back - and again suffices only for 5-10 minutes of normal work. Then again keys do not work

What can be? maybe phone partially hardware dead?

Hello.You can check this way : press >*<<*<* then you go to Service tests and then Keyboard ==> now press all buttons and see what happens.If not working go to a phone service.