원문 게시자: fasthans ,
Justin, it seems like you covered most if not all of the bases. While I am not that familiar with the IPhone, getting my first back in February, I am an experienced IT guy, successfully working on many laptops and desktops hardware, software and configuration issues. I am familiar with troubleshooting. You have done everything you could, but one thing I found on Googling the issue, Have you tried a hard reset? This is reported by users as successfully restoring the sound in some cases with new IPhones out of the box. It is also possible that the motherboard either failed as a coincidence in timing after you reassembled your IPhone after the repair or it was damaged as a result of handling during the repair. Touch a printed circuit board with ICs on it in the wrong place and static can damage the chips in some cases. It is a hit or miss thing and you may not even feel the static discharge. If the hard reset does not work and unless there is some other thing you and I have not thought of or something else that those far more experienced in IPhones specifically can suggest, I do not think there is much more that can be done here...sorry.