sorry, 🙂

I replaced the internal battery of Synth SY77 and it seems that the issue is solved, because I don´t read the error message "battery replace" anymore; BUT now when I play the factory voices I just can hear a soft AFM signal; please, how can I solve the problem and listen the voices again? how to make a test or a reset of the synth SY77?

thanks for any help in advance!