From Repair Mobile

How to repair Nokia N78

How to repair speaker fault in N620.

My cell phone speaker not working there is no sound while some one calling me , Is it Repair by me.

Answer

If you are sure that the speaker of cell phone is faulted then you switch off you cell phone and check the pin (17) and (18) volt of U303 . now you check the signal of pin (1) and you on your mobile that time you see that you mobile is working normally. If it is not working the you change the U303