the sound of the FM radio is turned off

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Senior Member
Jan 7, 2021
Good day. I can't figure out why the FM sound turns off. I have now tried different firmwares, after implementing the DSP the same error remains, the system sound and mp³ work but the fm radio sound is turned off. I don't know how to force the amplifier to remain active. The board is 9218DH DSP - I have to implement DSP in the system if I give the firmware without dsp (9216 hi-fi) because otherwise neither the android sound nor the mp3 sound works. Do I need to rewrite some libraries? I give a different firmware because the 9218 turned off RDS after the 9218 update. It works on 9216 rds advise.Thx