Oppo R9 Battery Connector Terminal Jumper Ways
If Oppo R9 isn’t getting electricity ON, Replace the battery and try to electricity it ON. Plug in charging pin into jack and attempt to make it charge. Check batter terminal’s +v and -V points with electronics meter.
Dis collect the telephone Oppo R9 and check battery connectors if these are lose or now not fix. Then test the entire mom board for water and rust damages, Carbon or damaged elements.
If discover some rust or carbon make it easy with electronics cleaner and observe warm air with warmth gun to make it dry.
Find out those elements that are diagnosed in above diagram and make test for volts. If discover some broken parts or tracks are lacking then observe jumpers as given in above diagrams.