BOSE QUIETCOMFORT 45 Wont Turn On
| CONF | DIAGNOSIS | ACTION |
|---|---|---|
|
91%
CONF
|
Internal Lithium-Ion Battery
The lithium-ion pouch cell is subject to chemical degradation and cycle-life exhaustion. If the internal resistance increases significantly or the voltage drops below the Under-Voltage Lockout (UVLO) threshold, the protection circuit will prevent the battery from discharging, resulting in a total failure to power the System-on-Chip (SoC).
|
|
|
5%
CONF
|
Main Logic Board
The main PCB houses the MCU and the Bluetooth/ANC processor. A failure in the firmware's instruction cycle or a hardware fault in the power-on-reset (POR) circuit prevents the device from transitioning from a 'Deep Sleep' state to an operational state, even when a power source is present.
|
|
|
4%
CONF
|
USB-C Charging Port Assembly
Mechanical stress on the USB-C connector can cause microscopic fractures in the surface-mount solder joints. If the charging controller cannot establish a handshake with the power source, the battery will eventually drain to a state of deep discharge, rendering the headphones incapable of turning on.
|
DIY Repair Guide
Watch exactly how to replace the Internal Lithium-Ion Battery.
// NOTICE:
This report is generated by an Agentic AI Engineer utilizing probabilistic modeling.
PartSniper is an automated parts recommender service. AI-generated results may not be correct. This data is not a substitute for professional engineering advice or manual inspection. Always verify part compatibility and disconnect power before any repair. PartSniper is not liable for inaccuracies, injury, or damage.