XMT 350 Troubleshootimg

[Arby911]

Cross-posted from Weldingweb

I recently acquired an XMT350 CC/CV for what may or may not have been the right price (free) and am now attempting to troubleshoot it.

It's pretty clean inside, with no obvious failures (burnt components, exploded caps etc.) but when power is applied (230v 1ph) there's no activity at all. No front panel display, nothing.

It IS a 1ph/3ph multi-voltage unit as per the label on the back and I've confirmed the power switch is functional with a meter but that's about as far as I've gone.

I was a US Navy Electronics Technician for several years so while I may not have the skills to repair this thing I at least know how to keep myself from getting killed while attempting to repair it. I'm a hack welder, learned on stick, have run a bit of wire and now want to TIG some steel if I can get this unit up and running for a reasonable price.

I've done a web search and can't find the service manual (except for purchase, and I'm cheap...) so any help you could provide would be much appreciated.


Regards,

[cruizer]

May be wired wonky, your using the Black and white wires right, and taping up the red. Inside the wires from top to bottom on the switch should be black, white red, and same on the right side board. Might want to meter out the on/off switch to make sure its working

and might want to supply a serial #

[Arby911]

May be wired wonky, your using the Black and white wires right, and taping up the red. Inside the wires from top to bottom on the switch should be black, white red, and same on the right side board. Might want to meter out the on/off switch to make sure its working

and might want to supply a serial #

Thanks, I can confirm that it's wired correctly (L1 & L2 live, L3 taped off, Ground to chassis) and that the switch is functional (as per meter).

Serial number incoming when I return home.