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Versión actual por: KWH ,

Título:

PP1v8 is 0.7V on an iPhone 7P

Texto:

Customer brought in an iPhone 7p and told me it died when he was calling someone.
 
I checked for a shortage and Tried booting with a power supply. It goes to 80mA and stays there. Nothing else happens. Display is black
 
After that I measured the main voltage lines needed to startup the phone and PP1V8 is 0.6-0.7V. As far I know nothing is shorted. Any suggestion where I should begin looking?
 
PC doesn’t recognize the phone nor does it charge but that should be because of the incorrect voltage. Read somewhere tristar doesn’t work if pp1v8 isn’t.
 
=== Update (08/07/2019) ===
Fixed the problem, it was L1816 on line: PP1v8_SDRAM. It’s near the CPU and was cracked. No idea how that happened.

Dispositivo:

iPhone 7 Plus

Estatus:

open

Aporte original por: KWH ,

Título:

PP1v8 is 0.7V on an iPhone 7P

Texto:

Customer brought in an iPhone 7p and told me it died when he was calling someone.

I checked for a shortage and Tried booting with a power supply. It goes to 80mA and stays there. Nothing else happens. Display is black

After that I measured the main voltage lines needed to startup the phone and PP1V8 is 0.6-0.7V. As far I know nothing is shorted. Any suggestion where I should begin looking?

PC doesn’t recognize the phone nor does it charge but that should be because of the incorrect voltage. Read somewhere tristar doesn’t work if pp1v8 isn’t.

Dispositivo:

iPhone 7 Plus

Estatus:

open