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Why the TDA7491LP / mute input is low

Question asked by kim sunho on Jul 18, 2017

#Help.!!! The TDA7491LP mute pin is the input port. I connected the 3.3V pullup resistor 33K resistor to the power supply, and the mute pin keeps the state of LOW state .... What is the cause? So there is no sound. .   Keep mute ...?