900+ Volts on pin 3 using a NOS Hoffman 50 OT

[apolloamps]

Just finished an amp and I'm getting 900+ volts on the plates (yet the tubes don't glow red or white hot)(and the voltmeter works fine) . I think Hoffmans Tranny is fried or hooked up wrong. Never had this problem. The rest of the amp checks out perfect. What gives?
Hep me please
Thanks
 Steve

[Willabe]

What color wires go where?

Can you post a drawing of how it's wired?

[stratele52]

900 volts each side probably, but if you mesure from ground ( there is a center tap in the middle of 900 volts winding ) , you must have 450 volts.

[plexi50]

Man thats dangerous. I would make certain your Power Transformer CT is grounded. Do you have a pic of your amps PT wiring?

[sluckey]

Which amp? Is this a new build? What voltage do you measure on pin 4 of the output tube(s)? If you pull the PI tube does the voltage on pin 3 look more normal?

[navdave]

Sounds like he hook up the PT in full wave bridged rectifier mode instead of full wave.