Jackson Bell Vintage Radio repair suggestions?

[electroking]

Originally Posted by stoutblock

would a 4 pin 5Z3 work as I have one?

No, unless the filament winding in the power transformer is overdesigned.
The 80 has a 2-A filament current, while the 5Z3 needs 3-A, so it would
most likely overload the transformer. You can grab the 4-pin base from
the old 80, add an octal socket with 4 pieces of wire and make an
adapter to use a 5Y3GT. I think this is the best possible thing next
to an actual 80. Good luck.