so please check these step carefully and take a look at diagram given with this post.
you have to check outer and inner path of the specific keys if a set of keys is not working else you may can check all keys separately with inner and outer path tracks.
if 8,0,#,left and Menu key is not working check the track one for outer.
if send,down,clear and 8 key is not working check the second track for outer.
if 1,2,3,9 and right key is not working check the third track for outer.
if 4,5,6,7 and up key is not working check the forth track for outer.
if menu,up,down and 9 key is not working check fifth track for inner.
if left,right,send and 7 key is not working check sixth track for inner.
if 1 4 and * key is not working check seventh track for inner.
if 2,5,8 and 0 key is not working check eighth track for inner.
if 3,6,# and clear key is not working check ninth track for inner.
if * 0 # and menu keys are not working make the tenth diagram's jumpers just two jumpers and no need to change keypad ic in nokia 1661.
for more detail and new tips and tricks about this problem keep visiting this page we will update it timely with new diagrams.some related post are also given bellow you can read them also for more information.
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