Nokia 7310c Keypad Solution

NOKIA 5130c-2690c-2700c Nokia Logo Turn Off Check Solution

NOKIA 5130c-2690c-2700c Nokia Logo Turn Off Check Solution Step By Step

A1) flash lhe phone higher version via usb or Fbus
2) usb flashing time computer show usb error?
must check usb connector usb control driver(remove usb esd)

usb flashing and fbus flash 100% done?but phone same Nokia logo then turn off?

B1) open handset then check display connector or change display(display also make this problem)

2) remove camera and power on phone with battery,phone still same problem(Nokia logo then turn off

3) check vcore,vio,vdram vrfc volt
this 4 volt controlled by combo ic
vdram,vrfc,vio volt controlled by AVILMA
Vcore controlled by BETTY
this 4 volt is prefect???then one thing is conformed avilma battery working fine

4) Re flow or change keypad Chip

5) Remove MMC CHIP.

6) BT ic also make this problem(6120 75% Nokia turn off bt Chip.

7) Finally re-flow or change combo Chip.