HafCo HM-47 milling machine electrical problem

[Filmoscope]

Hi all,
Machine stopped starting motor today - yesterday was all OK.
All electrics seems starting OK - pump, DRO, all lights, etc.
Fuses are OK
When I press buttons forward/reverse on panel nothing happens.
When I push little knobs on KM1/KM2 switches inside box motor start rotating forward/reverse so I think motor is OK but there is some relay issue?
Can someone direct me where I need to dig?

 

[markba633csi]

You would use an ac voltmeter with one probe on 0 and trace points 2,3,4, and 7 at which point you would likely find you are losing
the 24 volt supply at some point before reaching the start buttons for contactors Km1 and Km2

Make sure the transformer is outputting 24 volts
Be careful

 

[Ulma Doctor]

Fuses can be checked
Transformer output can be tested
Resistance testing the control switches would be next
Overload relays would be tested next
Power cables and control wiring can easily be inspected
Resistance test contactor coils

That’s what I got off the top of my head

 

[Filmoscope]

Thank you all for help,
it turned out to be safety (guard) switch.
I checked it as advised on other forum and it was not properly pressed.

 

[markba633csi]

Thank goodness for simple fixes!