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Old 03-13-2019, 20:17   #6 (permalink)
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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.
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