Live voltage doesnt show anything

i bought the plug and play from langmuir, from razor cut 45, the cable goes thc to vim box div input, then div output to thc.

i have also went further to open the main controller and followed this step

the chip works as it should so no problem there.

is there a setting i might have missed? im just not getting any feed back from live voltage.
when im cutting, the z axis moves but doesnt show any voltage.
and also i always get this so i just turn off the thc, kinda sucks!

i also did my research on reversing the wires, did that but still no live voltage.
the main control box is isolated from the table. i have tried rebooting table and laptop which is not hooked up to the same power as the table.

i hope its something simple lol

I am having the same exact issue , right out of the box this the first issue I am having . I’ve been working on this situation for about three days now . Seem to have not figure it out .
I’ve gotten it to work once , but once I stoped away from the computer and the computer went to sleep , I came back and tried using it again , it started having the same issue .
Have you figure yours out yet .

Loose firing relay? May have the reseat the relay.

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If you have a face book or instagram I can show you videos of everything . Might be easier lol

No i havent :disappointed:
Just ended up turning thc feature off