Samsung S6102 charging ok, flash ok, but not powering phone, this mean power button cut/line problem.So now follow simple power button jumper ways.
When it comes to hardware, the very first thing that you need to do is to re-solder power button strip and check its on-board connector for any loose contacts.
If the above method not working replace new power button strip.
Check power switch connection line paths accross to each components where it is being connected.
If you are facing an energy problem in Samsung S6102 Champ Duos diagrams in this article can help. Continue with the following troubleshooting solutions and establish bridges necessary for the points that have been damaged.
Samsung Galaxy y S6102 keys Power Jumper
Samsung GT-S6102 On Off Button Ways
Samsung S6102 Dead does not start Solution
Samsung E2652 Champ Duos power button point Trick damaged bridge. Trace point of damage to the meter or check off switch with a new one. We can check problem button to connect the phone to the charger with mobile entertainment indicator appears on the screen and pressing the power button, then this is a power button problem. See diagram and apply jumpers as diagram.