Question about Sony Ericsson K750i Cellular Phone
The keys 1,2,3 and the toggle switch do not respond. Rest of keys ok. I stripped down the switch, which was dirty inside,cleaned it and retested it without success.
I assume the case is undamaged & therefore wasn't dropped.I suggest this is a firmware problem as the phone hasn't been inspected internally before. Maybe related to SIM card? Try copying SIM card to another & replace it.
Posted on Jul 06, 2007
Your fon might be dropped and that's the reason maybe the keypad IC get malfunctioned
Posted on Jul 05, 2007
Hi there,
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Posted on Jan 02, 2017
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cheak the continuty on trakes between 1-2 teminal of joystick
and key pad ic if ok reball keypad ic not ok then you have to replace ic.
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keys 12 and 3 not working
My screen went black and keys 5 and 8 were dead.So I replaced screen,keypad and flex on my cellphone and screen works fine now but the keypad is somewhat working.By somehwhat i mean : asterisk button does not register at all but when i press the button upper from the end-call button,asterisk pops up,and some keys register as other keys (ex.up button as 7,right as calendar shortcut,) The main button (The OK button)works fine inside some menus but when not camera opens instead.Maybe its just a low-quality keypad?Or its not properly attached?
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