07-09-2018, 06:21 PM
A 5Y4GA or a 5Y4GT? You could also use a "gasp" metal tube in it's place. I don't know why Philco insisted on mounting the rectifier tube socket on the top bell of the transformer, it was likely the same logic with using a modular chassis design, but it causes many issues that a 1950s TV set with the same install would not have.
Regards
Arran
Regards
Arran