Chosen Solution
Hi there I was doing work on an iphone 6 yesterday, and i forgot to disconnect the battery connector when working on the phone. When i tried to boot it up the screen won¨t turn on, and connecting to itunes it tells me error 4005 without the lcd on it. Does any of you have any experience and helpfull thing that can rescue my iphone or is it a total loose ?
I would try these steps in order. 1- Open the phone, take out the board and check ( J1111 ) if it’s damaged or shorted repair it. Try to restore the phone without connecting the front camera flex. 2- Check ( U0301 ) IC if it’s cracked or damaged, resolder or replace. 3- Take out the board and remove the metal sheild over the NAND chip (the U0604 chip in the picture). check if ther is any damaged component around the chip, or if there any water damage (clean it ). Check if there is any shorted (capacitor, resistor, coil) around the chip then replace it. 4- resolder the NAND chip using heater (use the same tempereture you use usually to remove ICs). heat for about 15 seconds and don’t forget to protect the ICs around the chip. 5- Replace the NAND chip but be carfull ( don’t heat to much cause you got the CPU in the other side). Don’t go to this step befor being sure that you did all the previous steps and there is no problem connecting to Apple server.
Error 4005 is pp1v8 shorted. Pp1v8 is the sleep wake voltage of the board. The error is nand failed to write as the nand memory’s main voltage is pp1v8. The fault is in the backlight driver ic or the lcd pmu. Most likly the driver. If you replace the driver yourself use caution not to use excessive heat as the proximity to the CPU and ram
Hi Guys Thank you very much for your swift answer, this is great that you are so fast in helping out, but you are speaking russian to my knowlegde of where to find all the components that you are talking about. I would be eternal greatfull if i could get pictures of them so that i can take the board out and examin it properly. thanks my spelling is properly not the best !
