new nokia 1202-3/1661 keypad solution

[net.tarik]

today i receive a 1202 nokia phone which is keypad problem.
in keypad, back / 3 / 6 and ** key not working.
i change keypad ic but problem not solved.
then i re-boll UPP. still same problem.
finally i change UPP but bad luck problem not solved.
then i check the keypad track and i found my phone fault.
and i use this method to repair this line.




now my phone is ok.

keypad have 2 way line
1-out line.
see pic

in out line
menu/left/*/0/** same line

up/4/5/6/7 same line

back/send/down/8 same line

right/1/2/3/9 same line

if outer line is damages some keypad not work.
example if phone */0/** key not work but menu and left work.
then try this pic


2-middle line
see pic

in middle line
up/menu/down/9 same line

left/right/send/7 same line

back/3/6/** same line

1/4/* same line

2/5/8/0 same line

if phone middle line is damages then try this
example this middle line work in back/3/6/** key

you can make this

mostly this problem found in water damages phones.

BR
net.tarik

[toqeer97]

thanxxxxx broooooooo

[darbrother2003]

thanks brother nice sharing

[dgonzalez]

bro. where is keypad ic exactly? because I can not find

[dgonzalez]

mi board is this

[IMG]http://www.************/forum/uploads/monthly_11_2011/post-18264-1320442903.jpg[/IMG]