just been given a 5s that wouldnt turn on due to inflated battery fault that pushed out and damaged the screen
before buying a new screen and battery i tested the logic board in my own 5s housing+screen it turns on shows the apple logo then just a black screen with backlight on
itunes says it needs a restore then gets as far as showing the update bar before doing a error9 then the screen will flash blue then stay black with backlight
any ideas? also its never had water damage...