"buzz" noise A axis motor after I replaced card

[Cosmin90]

Hello,
I buyed a fadal with A axis... I found the A axis amplifier is burn.
Inside cabinet I found other amplifier, I instaled it but now when I start machine (without moving A axis) I have a loud noise from A axis motor. I try haotic to turn small pots ) without any succces, just make the noise bigger.
The good think the A axis is turning now using MPG, but I was scared to let the motor with this noise and try other adjustment without any documentation.
Can you give me pleasca an advice regarding this situation?

Best regards,

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[rodney247]

To Adjust the Amplifier fro AC amp here is the procedure https://www.fadalcnc.com/media/pdf/O...edure%20SV.pdf

[rodney247]

Fadal Amplifier adjustments both AC and DC