The above diagram contains some different color lines these are used for nokia asha 203 touchscreen function.You can find out if there is some rust carbon in it. Mother board can be water damage or may be you find out some burn parts in it.
In case of water damage clean the mother board and apply heat to make it dry. In case of burn or damage parts you can replace components.
Check all these tracks that are given in diagram for nokia asha 203 touchscreen problem solutions.Small circles in different colors are given so that you can find out points where you can apply jumpers and you can check these with meter.
If any link is broken apply jumpers to solve touch screen solution in nokia asha 203.
I all ready have posted an Nokia Asha 203 Touch screen IC problem solution you can check it also.
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