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Old 03-14-2019, 11:48   #7 (permalink)
Sakalalina
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Join Date: Feb 2014
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Quote:
Originally Posted by CDMA_RASHID View Post
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

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.

Thanks bro,

pp3v0_TRISTAR ... OK

PP3V0_PROX .... Absent but no short on C2108

PP3V0_MESA ... OK

PP3V0_IMU ... Absent and short on C1284

I've removed C1284, C2272, C2271, U2205 but still shorted...

I've to replace U1202?
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