Here's the solution for Nokia 6730 classic with not working keypad problem. This solution shows some hints on how to fix a not working certain keypad keys.
If encountered and trying to fix or repair this problem, you may first check the keypad flex ribbon cable for possible damaged, oxidation build due to wet or water damaged or just try to replace it when the replacement spare is available.
If the keypad keys seems working fine you may then locate the components showed on the solution below.
Check and clean the keypad flex pin connector.
There are two keypad filter IC used and mounted on 6730 PCB board, you may then try to replace each of these keypad filter chip.
If encountered and trying to fix or repair this problem, you may first check the keypad flex ribbon cable for possible damaged, oxidation build due to wet or water damaged or just try to replace it when the replacement spare is available.
If the keypad keys seems working fine you may then locate the components showed on the solution below.
Nokia 6730 classic Keypad Filter IC Connection Tracks
There are two keypad filter IC used and mounted on 6730 PCB board, you may then try to replace each of these keypad filter chip.
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