Check battery that already used or must be replaced new, and then check stripe of batrei ped using avometer, there are short circuit or Not, Then check hend phone using UFS-8. Seeing the result Ok's Boot or Eror. If Boot Ok, likes picture above, So repair hand phone can continued to next process, see that hand phone can give info when button “Info” pressed. if the result Boot Eror's likes the picture below, Process of repair hand phone furthermore are:
- Check UFS-8's cable, Boot Error's like this can caused by Flash's cable less connect in data FBUS's stripe terminal in engine PCB hand phone. Dirty or Less clean also can caused it. Try to investigate and Cleaning terminal or Place of flash pin cable, the other possibility are connection of this cable sloping or crooked.
- Check IC Hagar/Mjolner, Try to rebold IC Hagar /Mjolner before changed it with new ones.
- Check UPP/CPU. If steps above has done, so damage on IC UPP/CPU, Try to rebold first, if same result, So you must replaced UPP.
- After IC UPP replaced, Checking with UFS-8, If Boot , so flashing handphone completely.
