|
OK, so the tube in the TV that I thought was a 6BU8 was actually a 3BU8 tube it was a GE branded replacement tube dated 39th Week of 1963, there was a bunch of dirt buildup on the tube designation number and the way GE does their tube numers in a "stencil" font the dirt buildup made the 3 look like a 6.
And then as far as the 5AQ5 goes, I took it and rechecked it in another tube checker I had laying around (a B & K DynaJet Model 666/606 Tube Tester) and the tube checked fine (no shorts in it anymore) so I wonder if I somehow blew off whatever was causing the short in the tube, I know that can happen sometimes.
So it looks like all I need is that 3CB6 tube and a 6CN7 tube which I don't happen to have in my stash anywhere, the 6CN7 tube in the TV which is an original Zenith badged GE tube dated the 20th Week of 1956 only had one section that tested good, the other 2 sections tested completely dead.
|