Originally Posted by nrhpd527
I am in the same situation and have just ordered the parts. I did a sample teardown and it appears to be pretty simple to do it. I'll report back in a few days, but my USB is for sure dead as it won't read either on a PC or Mac, or charge via a car, wall, or USB cable in a computer. I bought the Samsung S4 battery charger and kit, and the old battery works in there, so I know it's not the battery. However, the battery's "water damage" sensor is now pink, so I presume that the nasty humidity in North Texas this spring has killed the USB board. At any rate, hopefully, the fix is en route.
Well, the part and tools arrived and it was an easy replacement. The phone now charges like original. However, and this is a much larger issue, I cannot get and mobile data or any sort of non-wifi connectivity. I am thinking this board, which supposedly contains the antenna, is defective. It appears I can have EITHER network connectivity or sound, but not both. When I put the small plastic cover that also contains the speaker back on, it instantly kills my GSM connection to AT&T. With it off, I am getting a solid 4G LTE connection, and with it on, no signal at all other than wifi.
I've searched here and on the web, and the only thing I see so far is sending back the new USB board and hoping that the next one works in all areas.
Anyone have any ideas?