K300: Some keys are not working

Posted by tranced
Hi there, i just got a faulty k300 from a friend. the *, 0, # and joystick are not working at all. i tried cleaning the keyboard but nothing worked. is this a firmware bug or hardware issue? i assume it is a hardware issue because it was working properly the last week.

Any help is welcome.

cheers!

Posted by BobaFett
well, hard to say, but let it flash first, if it didnt help, the turn to se service imo

Posted by tranced
and the worst part is that the auto key lock is on. imagine. i'll wait more advices before flashing it. thanks boba.

Posted by BobaFett
but if u cleaned it, then not much to do next ot it imo. or let it check as it is in the service

Posted by tranced
i will check it again before flashing it. the phone is not mine, so my friend will decide what to do, not me.

Posted by Sammy_boy
Take it apart and give parts like the keyboard PCB and it's connector a good clean (though I think you may have already done this!).

You could give squirting that area with WD-40 a try to see if it works, though please don't hold me responsible if it bricks the phone completely! Though it's revived a previously moisture damaged and dead D500 for me so far!

Posted by LesleyAnn
regarding cleaning, is this of any use?

http://whistler.intelecasoft.com/how_to_repair_se_k750_joystick

Posted by aatuif
clean the keypad's contacts from inside. It is the most likely solution. I had a n6630, it's 5 button was dead, cleaned with a soft cloth from inside, was as good as new.