|
Did it work with the 6JE8? That has a much different pinout from a 12a_7 tube. I think you could have blown your power transformer. I'd pull the tubes and check to see if the power transformer measures open. If not, then leave the tubes out and check that you're getting rail voltage. Then put your original known-good tubes in and check to make sure the plate voltages are correct.
Be careful!
|