Not charging category :
1. Not charging with beep ( not charging displayed)
2. Not charging no beep ( no response from phone)
For nokia 1200 not charging with beep :
1. Check board and connector charger, Clean and replace connector charger if needed
2. Tuning Energy management or just write PM (software solution)
3. Check R22 and Charging IC, replace if needed
For nokia 1200 not charging with no response :
1. Check and clean charger connector
2. Check fuse ( replace if needed)
3. Check charging circuit ( jumper wire if needed)