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I've been away from LinuxCNC for a while. I've been working on other projects. Fired my CNC mill up this weekend but the jog doesn't work and I can't run a program. I thought maybe my parallel port break out board had gone bad but I can move each axis using the "test this axis" feature in the setup wizard. I have a very simple home made machine with only and Estop and no limit switches. Could someone please refresh my memory on some troubleshooting ideas? 

Thanks

Mike 

Also, a 10A PSU seems a bit tight for 4 motor drivers!

10A PSU is more than enough for 4 stepper drives/motors.
With some reserve, even at 5A set for each motor (makes 20A), a 5A/36V supply is enough.
@LangdonS, now go read how and why that is possible, instead of posting about stuff you have no experience with.
Then, check if same is true for servo drives, and report back.

Any idea of what may be suitable for a new image ?

I'd like an idea of what to use in the Raspios image I'm working on for Trixie.

So I'm not sure what you need to do for yours, but I had an issue with the pin out of the relay boards wiring. I fixed that and then needed to bypass the estop that was on my pendant as that will not be used anymore. Lastly I needed to press a button that enabled the drives and latched some of the relays on. I would need some .more info probably to help and more than that