What is the fault of the red light of QSC GX3 power amplifier?

The red light of the power amplifier is due to a problem with the power supply, resulting in insufficient voltage or high voltage. You should check the capacitance of the power supply immediately and replace and repair it in time.

The red light of the power amplifier is the start of the power amplifier protection circuit. When the indicator light flashes, the output of the power amplifier is turned off to protect the speaker from being burned by the output DC.

Power amplifier refers to a power amplifier. Ordinary amplifiers are designed and manufactured for audio amplification, including so-called amplifiers.