[jeyurkon]

It sounds like they all test the same in any event. That's good because you want them to be in balance. 600uA is still pretty decent. As tempting as it is to hypothesize why it's doing this, I'll refrain.

But, I would check for shorts again after you observe the lower emission. Also, recheck the filament voltage setting to see if it's drifted.

Also, while you're checking the emission observe the gun area and see if you see a blue glow that might indicate that it's gassy.

How's the G1 cutoff? With such a high initial emission I'd expect it to be well within range.

I don't think I've been very helpful, but you made me curious.

Maybe you should repost in the color tv forum.

John