Hi im josh may i help you? friend i diagnose that the problem of your phone is the buzzer or the ringer? Im sure you have already reached in some adjustment in setting but still it is not working. right? friend if that so well the problem is the connection of the buzzer inside to the mainboard. you can solve such problem by.
1. cleaning it with soft brush try to remove the dust inside that may cause the lost contact.
2. if problem still occurs.try to connect firmly the 2 metal filament on each mainboard contact cause maybe the problem centers on it.
3. if still occurs.if you know some electronics job such as soldering or if you dont have the skills let somebody in your neighborhood or techinicians to do the job.they have it jumpered from I.C. to the buzzer especialy when the mainboard connections is already cut or spoiled or dislocated. and if you know the job you can ask nokia.com for the manual support.of the connections.
4. if tried then not working.it will make the work more easy cause you are going to replace the buzzer itself then the jumper wire will be removed.
5. jumper wire is those magnet wire coated as thin as the hairline to avoid shortage.
friend thats all hope i helped you.good luck