Nb8511-pcb-mb-v4 Boardview Portable Site

A: This is often a charging chip failure. Locate the charging IC (labeled PU in the schematic). Check the main power rail (typically B+) and the 3.3V and 5V regulator outputs. Many users report that the primary cause is a shorted capacitor on the main power line.

Use a hot-air rework station to remove the bad component, solder the new part, and re-verify the resistance to ground before applying full system power. Sourcing the Files Safely nb8511-pcb-mb-v4 boardview