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Now I will show how to is repair nokia 1200 mother board short problem.When short motherboard then mobile phone is standby short time.It is very Disturbance so it repairing is very important.View the below picture and work step by step.
How to do this work : If any repairer face this problem then first clean full pcb goodly with petrol or thiner.next check red mark parts,If you see short one of them then replace that parts.