iphone 6 stuck on apple logo and not charging

[Jasir777]

hi brothers..im new here..i have facing the problem with a IPHONE6 . the device is stuck on apple logo and not charging...when i put the itunes mode there too not connecting [i have changed battery and cc couple of times}....please give me a useful solution...

[AmieeWhite]

Charging fault analysis

Plug dongle to computer, open PCB diagram software, iPhone 6 PCB diagram, Charing voltage input PP5V0_USB, battery voitage PP_BATT_VCC, Battery electric quantity dectection BATTERY_SWI_CONN, Connect U1401, Tigris charger, USB control IC, overvoltage protection signal, U1700 damage can result in not charging, reboot and connect computer failure ect.



Charging fault detection

Open iPhone 6 screen, take down the screen, pull up the battery connector from logic board. The coltage is about 2.0V after measurement through stitch battery is ok.

Plug to charger, the voltage is 0.5V(normal 1.8V - 4.2V) after measurement through FPC connector, logic board can't charge



Repair:

Take out the logic board, fix the logic board with PCB holder. **** the shield cover with 320℃ air hot gun and take off it. After ****ing for 1 minute at 240℃, scrape off the black ashesive. **** the Bonding Pad for 1 minute at 300℃ until the tin melts, pry the chip with sculpture knife, apply some Paste Flux, remove the tin on bonding pad, apply some rosin on the Solder Wick and slick Bonding Pad, clearn the Bonding Pad with PCB Cleaner, align the new chip in right direction through stitch. **** the chip with hot gun for 1 minute at 280℃. Install the logic board after cool down

Watch the video please go to here

[bobo bokota]

Thanks Brian for job

Originally Posted by AmieeWhite

Charging fault analysis

Plug dongle to computer, open PCB diagram software, iPhone 6 PCB diagram, Charing voltage input PP5V0_USB, battery voitage PP_BATT_VCC, Battery electric quantity dectection BATTERY_SWI_CONN, Connect U1401, Tigris charger, USB control IC, overvoltage protection signal, U1700 damage can result in not charging, reboot and connect computer failure ect.



Charging fault detection

Open iPhone 6 screen, take down the screen, pull up the battery connector from logic board. The coltage is about 2.0V after measurement through stitch battery is ok.

Plug to charger, the voltage is 0.5V(normal 1.8V - 4.2V) after measurement through FPC connector, logic board can't charge



Repair:

Take out the logic board, fix the logic board with PCB holder. **** the shield cover with 320℃ air hot gun and take off it. After ****ing for 1 minute at 240℃, scrape off the black ashesive. **** the Bonding Pad for 1 minute at 300℃ until the tin melts, pry the chip with sculpture knife, apply some Paste Flux, remove the tin on bonding pad, apply some rosin on the Solder Wick and slick Bonding Pad, clearn the Bonding Pad with PCB Cleaner, align the new chip in right direction through stitch. **** the chip with hot gun for 1 minute at 280℃. Install the logic board after cool down

Watch the video please go to here

Envoyé de mon Mi 4i en utilisant Tapatalk

[Amanda0820]

Originally Posted by AmieeWhite

Charging fault analysis

Plug dongle to computer, open PCB diagram software, iPhone 6 PCB diagram, Charing voltage input PP5V0_USB, battery voitage PP_BATT_VCC, Battery electric quantity dectection BATTERY_SWI_CONN, Connect U1401, Tigris charger, USB control IC, overvoltage protection signal, U1700 damage can result in not charging, reboot and connect computer failure ect.



Charging fault detection

Open iPhone 6 screen, take down the screen, pull up the battery connector from logic board. The coltage is about 2.0V after measurement through stitch battery is ok.

Plug to charger, the voltage is 0.5V(normal 1.8V - 4.2V) after measurement through FPC connector, logic board can't charge



Repair:

Take out the logic board, fix the logic board with PCB holder. **** the shield cover with 320℃ air hot gun and take off it. After ****ing for 1 minute at 240℃, scrape off the black ashesive. **** the Bonding Pad for 1 minute at 300℃ until the tin melts, pry the chip with sculpture knife, apply some Paste Flux, remove the tin on bonding pad, apply some rosin on the Solder Wick and slick Bonding Pad, clearn the Bonding Pad with PCB Cleaner, align the new chip in right direction through stitch. **** the chip with hot gun for 1 minute at 280℃. Install the logic board after cool down

Watch the video please go to here

Hey! any advice repair iPhone 6 water damaged? thanks.