GE 14T009 Restoration

[Electronic M]

Test the tubes before putting them in. If you did not, it is possible the second 7AU7 was bad before it even went in the set. I've found NOS duds (and weak used tubes the same brand as on the carton) before.

Also occasionally a tube will have a defect that can damage the set....Like say a short between the plate of an IF tube to the grounded end of the heater....Which could fry the IF trans...There are many defects any given tube could have that could be harmful testing first saves you grief, and diagnostic effort at the cost of a little time.