"DC Power Supply Readings Guide: Short, Low Boot, No Power Solutions 2026"

*Video Chapters* 0:00:00 - Intro & Setting Up DC Power Machine for Fault Finding 0:02:27 - Getting Started: Initial Readings Discussion 0:02:46 - Fault 1: 0.00A Reading (Before Power Key Press) 0:04:47 - Fault 2: Auto-Consumption (e.g., 17mA) - Primary Line Short/Leakage 0:06:45 - Fault 3: Auto-Consumption (e.g., 23-30mA) - Secondary Line Leakage 0:08:49 - Fault 4: Very Low Auto-Consumption (3mA) - Fast Battery Drain / WiFi Section Leakage 0:10:04 - Fault 5: High Auto-Consumption (Up to 49mA) - Buck Coil/Power IC Short 0:11:07 - Physical Causes of Auto-Consumption 0:15:25 - Transition to Readings After Power Key Press (Dead Phone Solutions) 0:16:30 - Fault 6: 0.00A After Power Key Press - Troubleshooting No Power / Power IC 0:21:41 - Fault 7: 0.01A Flickering (01-0-01) - VPH Line / Charging IC Fault 0:23:55 - Fault 8: 0.01-0.02A Flickering (1-2-0) - V\_USB Short Indication 0:27:52 - Fault 9: 0.02-0.03A Flickering (2-3-0) - Modem Buck Coil Short 0:29:50 - Fault 10: 0.02A Flicker & Return to Zero - CPU Reballing Issue 0:32:51 - Key Chart: Booting Amperage for Qualcomm & MTK (CPU/eMMC Removed) 0:37:06 - Fault 11: 0.01A-0.10A Oscillation - AVDD/V\_AUX Short 0:38:53 - Fault 12: 0.02A-0.49A Cycling - Power IC Buck or CPU Reball 0:41:16 - Fault 13: 0.378A Flickering - VPH Line / V\_CORE / Charging IC Issue 0:43:08 - Fault 14: 0.08A-0.22A Flickering - V\_AUDIO Short 0:46:30 - Fault 15: 0.30A-1.03A Stuck on 0.78A - eMMC/UFS Initialization Failure (Software Check) 0:52:10 - Fault 16: Amperage Stuck Low or High (e.g., 0.135A) - eMMC/UFS Software/Hardware 0:55:31 - Fault 17: 0.150A-0.250A & Return to Zero - Weak Battery or CPU Reballing 0:57:55 - Fault 18: Continuous Amperage Variation After Power Key Release - Auto Port / eMMC 1:00:51 - Fault 19: 0.275A & Return to Zero - RAM/eMMC Fault 1:07:28 - Final Test: Full Short Circuit Reading (Max Ampere Draw)