View Single Post
Old 03-13-2019, 20:17   #6 (permalink)
CDMA_RASHID
No Life Poster
 
CDMA_RASHID's Avatar
 
Join Date: Jul 2008
Age: 31
Posts: 973
Member: 821646
Status: Offline
Thanks Meter: 437
Use DCPS and check for power consumption.


Normal consumption of a perfect phone would be 40mAH on initial power press and will gradually increase.


If the power consumption is 100 mAH that means any of the 3v0 power supply is short to ground.



You need to check all power rails that has 3 volts on it.


For example check
Quote:
pp3v0_TRISTAR

PP3V0_PROX

PP3V0_MESA

PP3V0_IMU

I have excluded Nand voltage because if this rail gets short the phone will not power on at all.


Check for short on the above power rails. If short found on any one of them check corresponding caps connected on that line.



Use Schematic and PhoneBoard for tracing and fault finding.


Hope that helps.
  Reply With Quote
The Following 3 Users Say Thank You to CDMA_RASHID For This Useful Post:
Show/Hide list of the thanked
 
Page generated in 0.10156 seconds with 6 queries