iPhone 4 dead voltages measured @ PMIC - GSM-Forum

X10robin · 12-19-2012, 12:13

I have an iPhone 4 that is completely dead.
No response to charger or PC.

When 4.2 volts connected current = 0
When power button pressed currentis 20mA !!

I have measured all voltages at the PMIC.

In the pictures below you can see the results.

1st picture is the off state
2nd picture is after the power button is pressed.

klarus_x33 · 12-19-2012, 12:35

Hi.

Try to disconnect iduction flex and plug charger in.

BR

Artur

X10robin · 12-19-2012, 12:45

forgot to explain,

This is measured on a bare board.
Nothing connected to it
4.2Volts supplied from a power supply (on a workbench)

and the power button is "pressed" with a tweaser on the flex connector.

12-19-2012, 12:13	#1 (permalink)
X10robin Freak Poster Join Date: May 2011 Location: Netherlands Posts: 172 Member: 1583294 Status: Offline Thanks Meter: 27	iPhone 4 dead voltages measured @ PMIC I have an iPhone 4 that is completely dead. No response to charger or PC. When 4.2 volts connected current = 0 When power button pressed currentis 20mA !! I have measured all voltages at the PMIC. In the pictures below you can see the results. 1st picture is the off state 2nd picture is after the power button is pressed.

12-19-2012, 12:35	#2 (permalink)
klarus_x33 Junior Member Join Date: Nov 2008 Location: Northampton, UK. Posts: 25 Member: 898908 Status: Offline Thanks Meter: 11	Hi. Try to disconnect iduction flex and plug charger in. BR Artur

12-19-2012, 12:45	#3 (permalink)
X10robin Freak Poster Join Date: May 2011 Location: Netherlands Posts: 172 Member: 1583294 Status: Offline Thanks Meter: 27	forgot to explain, This is measured on a bare board. Nothing connected to it 4.2Volts supplied from a power supply (on a workbench) and the power button is "pressed" with a tweaser on the flex connector.