iPhone 6G 0.07-9A on DCPS - GSM-Forum

oreal251 · 11-05-2018, 05:01

Hello everyone!

Hi I have an issue with customer iPhone.

when I press the power button the phone stuck on 0.07-9A.

Before I had a vcc main short but I found the short and removed it.
After one day this issue appears.

What do you guys think?

I changed already Tristar ic, Tigris ic and Q1403

By the way, no short found.

Thank all that can help!

7Axis · 11-05-2018, 18:34

Where was the initial VCC_MAIN short at? check for voltage rails near that previous VCC_MAIN short and see if something is missing.

oreal251 · 11-09-2018, 04:13

Quote:

Originally Posted by 7Axis

Where was the initial VCC_MAIN short at? check for voltage rails near that previous VCC_MAIN short and see if something is missing.

Hi,
Thank you!
Nothing is missing.

ninos22 · 11-09-2018, 09:37

Quote:

Originally Posted by oreal251

when I press the power button the phone stuck on 0.07-9A.

BATT_VCC ok?
VCC_MAIN ok?
TIGRIS output ok?

SDRAM 1.2v & 1.8v ok?
NAND 1.8v & 3.0v ok?

CPU 1.2 & SOC 0.95v fixed ok?

If all rails ok this looks like I2C short. Put DCPS 5.0v to reach 100-120mA and freeze board to find what is wrong.

11-05-2018, 05:01	#1 (permalink)
oreal251 Junior Member Join Date: Jun 2017 Posts: 4 Member: 2727282 Status: Offline Thanks Meter: 0	iPhone 6G 0.07-9A on DCPS Hello everyone! Hi I have an issue with customer iPhone. when I press the power button the phone stuck on 0.07-9A. Before I had a vcc main short but I found the short and removed it. After one day this issue appears. What do you guys think? I changed already Tristar ic, Tigris ic and Q1403 By the way, no short found. Thank all that can help!

11-05-2018, 18:34	#2 (permalink)
7Axis Freak Poster Join Date: Nov 2017 Location: Canada Posts: 131 Member: 2777379 Status: Offline Thanks Meter: 34	Where was the initial VCC_MAIN short at? check for voltage rails near that previous VCC_MAIN short and see if something is missing.