Hello Hnguyen,
> Could you please tell me where they are, so that I can learn from that.
Open your original "wrong" asc-file.
Right-mouse-click on the symbol of the source "Vcmfb1_2c" and "Vcmfb2_2c".
The V-source dialog window will pop-up. You will see a field "AC Amplitude". This should be empty or 0 in your simulation. You will also see that you have un-ticked "make this information visible on the schematic".
AC Amplitude: 1
Best regards,
Helmut
