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In nokia asha 200 keypad problem can be due to rust carbon or water damage in this case keypad ic can be damage or keypad track can be missed from any point. for solving keypad problem in nokia asha 200 you can see diagram bellow.



In above diagram there are two main dial ic these are used for keypad functions and these are controlling keypad opetions.in upcoming days I will add a post about keypad track of nokia asha 200 that will also help you to see that which keys are linked with each other.
For this post you only can clean the board ic and keypad if there is some rust or carbon. you can resold these two parts and can replace these two ic for keypad problem in nokia asha 200.  

if you have a Nokia Asha 200 dead they may can have a power switch on off problem so please in first step plug in a charger and if Nokia Asha 200 is charging proper and well but not getting on it means the main problem can be power switch on off fault.



so for this you have to change power switch button on off button in Nokia Asha 200 if prints are also damge in Nokia Asha 200 for on off button then here is a full path and track for power switch button in diagram that is attached with this post so check all this path and track for power switch on off button in Nokia Asha 200 and if any of these links broken than make these jumpers as shown in diagram with red line while blue color is indicated for ground print.
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.