CTC-5 No luminance.

[Arcanine]

Originally Posted by OS X

Well finished testing the rest of the tubes there's a fair amount that are weak. Both 5U4's are weak along with a almost dead 3A3, (2) 6AQ5A's,6CB5A and the 12BY7A. Unfortunately now there's a biger issue when I was removing the 6AW8 (and I was being very carefull) The tube socket just crumbled into pieces it was the only tube in the set that already was replaced, being it is the tube directly next to the 5U4's I'm guessing the extra heat did not help it.

3A3 tubes always test bad. The testers don't generate the voltage that goes though those tubes. It's still good. Don't sweat it. Get a spare, yes, but even NOS will test bad, too.