1941 Zenith 8A02 Console found

[dieseljeep]

Originally Posted by TUD1

It took all morning to get the chassis out if the cabinet. By the time we go it apart, it was time to go. One of the older gentlemen there said I could replace the 6X5 with a 5Y3. If I remember correctly.

The pinout is totally different on the 5Y3 VS the 6X5. Plus the heater voltage.
The last chassis like that, I replaced to PT on, I replaced the 6X5, with a 5Y4, as the socket didn't have all the contacts for the more common 5Y3.
If the transformer has a separate five volt winding for a rectifier tube, I prefer to use a five volt rectifier tube, fully knowing that the six volt rectifier tube isn't that reliable.