Problem has me stumped

[Furniture guy]

Found this site recently and from the looks of things I'm sure someone can help me. I have a Precision Plasma 4x8 table with CandCNC electronics running Command CNC. Hypertherm 65 with machine torch. Everything has been cutting great until I fired it up one day and the volts readout for the THC flashes a number then stays on zero. I can cut fine with the THC shut off but not so much with it on. Pierce height and cut height are right on to specs. If I try to run a file with THC on the readout flaches volts for a split second and then stays at zero. Everytime it starts a new cut it flashes a reading (say 125 volts) and drops to zero. Hoping someone can help me as I've run out of options.
I read 3 volts coming out of the Hypertherm CPC plug when I fire the torch and I've replaced all the consummables a couple of times. No luck
Thanks

[acourtjester]

you should contact CandCNC but sounds like you interface with the hypertherm has failed.

[tcaudle]

We have a very active and monitored Support Forum where we can do diagnoss and things to check. We have humans that answer the phone and support our products.

[Stout]

You can check to see if the voltage divider is operating properly first. Hypertherm tech support can help there. Check it at the the wiring to the THC input. If you have no arc voltage, it's either the wiring or the divider. It just helps to narrow the scope of problem areas.

[tcaudle]

There are test buttons on the PWM sender unit that eliminates the whole DTHC/cable/computer side.

[Furniture guy]

I've been in touch with CandCNC and am sending in the interface board and pc to be looked at. Very helpful people there just like everyone on this board.

[attila0216]

Did the problem got solved? Waht caused this 0 volts?

[EverydayDiesel]

Did you ever get this solved? I am looking at building using the same components you used "Precision Plasma 4x8 table with CandCNC electronics". Would you buy it again?

[DMoneyAllstar]

3.5yr with CandCNC bladerunner automation bundle and only issue I've ever had was the PWM module, specifically the 3.5mm cable connector once used. I bought the updated version with the more standard plug type.

Other than a power supply on my Dell tower PC taking a dump once, it's been nothing but fun. I built the table and assembled / customized an old version gantry from PPLLC.