Help with part for circuit board

[Wayne-Ooo]

I need to replace 3 of these, I have circled in yellow.

Would someone happen to know or have an educated guess on what I should buy.

Thank you.


20220224_172039.jpg

[Tink]

Zener diode.

There should be a part number on them. Make sure they go in the right direction, black band dictates direction.

[Wayne-Ooo]

Zener diode.

There should be a part number on them. Make sure they go in the right direction, black band dictates direction.

Thank you, I really appreciate the help.

This part of fixing up a machine is not my strong point.