BOSE SUB1 POWERED BASS MODULE Bass Module Red Light
| CONF | DIAGNOSIS | PART MATCH | ACTION |
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85%
CONF
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Main Amplifier/Power Supply PCB Assembly
A solid red light indicates a system fault, usually caused by a shorted output MOSFET or a failure in the power-on-reset circuit. Replacing the entire integrated board resolves logic errors, DC offset protection triggers, and power delivery failures that the protection circuit monitors.
SKU: N/A - Internal Service Part
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CHECK PRICE |
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10%
CONF
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Internal Thermistor/Thermal Sensor
If the red light is flashing, the unit has entered a thermal protection state. This is caused by an increase in resistance in the thermistor or a breakdown of the thermal interface material between the amplifier stage and the aluminum chassis, causing the unit to misinterpret its internal operating temperature.
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CHECK PRICE |
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5%
CONF
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Replacement IEC C13 Power Cord
In rare instances, high-resistance arcing or insufficient current delivery through a damaged power cable can cause the switching power supply to oscillate, triggering a generic system fault red LED during high-demand transients.
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CHECK PRICE |
DIY Repair Guide
Watch exactly how to replace the Main Amplifier/Power Supply PCB Assembly.