how to repair Nokia n73 Mic problem

Here is tips for Nokia N73 Mic problem :
1. Check headset connector first for dust and water damage, replace if needed.
2. Check mic, replace mic if needed.
3. If still problem replace Avilma.
4. If still problem check mic circuit for broken circuit.

how to repair Nokia N73 totaly death

Here is tips how to repair Nokia N73 totaly death :
1. Check power on switch first, replace button if needed.
2. If power on button is ok please check batteray connector, replace batteray connector if needed.
3. Try upgrade software then (reflash firmware).
4. If batteray connector is Ok measure resistance at batteray connector, if too low (short).
5. Check Voltage at C2203 & C2204 (about 3,7-4 Volt)
6. If needed replace C2203 & C 2204 (Capasitor)