keypad not work in x 480

[CASTRANOVA]

i have a problem in x 480 in keypad do,nt work

after cleaning board all its ok without keypad

i need how to solve this problem

wait for your answer with schématic

thanks

[fofi.scott]

i have a problem in x 480 in keypad do,nt work

after cleaning board all its ok without keypad

i need how to solve this problem

wait for your answer with schématic

thanks

remov all varistore bro

[CASTRANOVA]

thanks brother
for sharing

[mdmm]

Brother,
I also wanna clean my key bord from inside of samsung j100.please let me know how to open and clean key pad???thanks

[loup noir]

thanck you for the schématic
picture