Chosen Solution
Hello guys, I had a customer walking in my store today. She brought a iPhone 5 for a cracked display repair to a little repair shop around my corner. However, after they where finished with her iPhone 5 it doesn’t respond to anything. No power at all, not even iTunes. So I thought its a logic board problem. I added a few pictures. The connector below the dock connector is damaged. Anyone knows what this is? And is this why there is no power? I found this picture on the internet: http://www.cyberdocllc.us/wp-content/upl… The pyramid coil is removed from this logic board, and there is damage below it as shown in my picture: http://i61.tinypic.com/qns7id.jpg
Also the EMC shield are removed by this repair shop. I am not sure, but it looks like the remaining EMC shields are wielded together so i can’t take them apart.
http://i58.tinypic.com/33xept5.jpg Any advice how to get the phone working again?
Sven Arits, that is reference designator Q2 which is a CSD75202W15 which is a dual FET utilized as a charging and USB control chip. Yes it definitely has to do with the power circuitry. Amazingly enough, it is not just missing, but somebody placed a jumper on it. check the middle row. This is usually performed when Q2 has failed. This is not accidentally. Anyhow, the EMI shield is soldered and would require desoldering, as well as reballing would be required for a replacement of Q2. Hope this helps, good luck.
Have you tryed a new battery? I would return to the shop demand it get fixed as it was when it was left there if they can’t I would demand a new phone or the price of the phone
You can unweld the shield from the board with flux and perhaps a little solder(only if needed) . Make sure you are giving the weld as much of your solder tip as possible. I would recommend a tip like the one all the way to the right in this image http://ecx.images-amazon.com/images/I/41… I am not sure that this would be in any way cost effective to do this repair however on an iPhone 4s. Jon
The jumper on Q2 is a common poor man’s solution for no charging/fake charging of iPhone 5. The phone should still start up with a fresh battery despite this—-does it?
