Mic failure after charging port replacement
Hi Guys, this is the second time this has happened to me, I changed the charging port on a Galaxy s3 i9300 which went well, I re-soldered a new charging port onto the mother board using my scope and checked visually and with my meter to ensure there were no shorts between the contacts, tested the phones functions and everything worked perfectly. However; within 24h the client has informed me the mic has stopped working and during calls the other person can't hear them speaking. I've seen this happen before and can see on various forums that this is common issue, but haven't found an explication as the why this would happen or what has caused this?
My suspicion is that somehow I've damaged an ic chip during the removal of the charging port..
Any help or advise would be much appreciated or some links to where I could find some circuit diagrams so I could do some fault checking..
Thanks in advance