Diezel VH4 Voltage Mod?

Hello,

I've been shopping around for a VH4 and/or Hagen used, and the cheapest ones seem to have anything besides 120V running. I've heard it mentioned that different voltages can be used with something as simple as a soldering iron mod, but I haven't heard any details. Could someone provide some more insight into the matter? Thank you

There is just different taps on the power transformer you have to move the wires to, Peter maybe can send you the pdf if you email him.