It is solution to crazy keypad(LG KE970 Shine). Any keys work, another not, sometimes without touching start to repeat some arbitrary digit. So that is solution… LG-Shine info
If removing J301 not solve your problem it´s because the other ic like J301 is damaged , it is placed in the left ( down) side of the scroll key.
I had the problem with keys 2,5,8 ,0 and power key ( only powered on and not off) .
The numeric keyboard is connected to the navigation keys by the flex cable that´s why the problem. LG Phone Problem and solution
If you want you can just remove it but i advice you to replace for a working one.
LG KE970 Shine keypad solution
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am o problema cu tastele3,6,9si#…nuj ce se intampla va rog un sfat cva..o explicatie:((