working on a Conrac CYB.

[kf4rca]

I'd check those 6080 regulator tubes first. Then check to make sure your 395V and 250V are correct. Adjust via P700 if not.
I like Coors here but I know that in Wisconsin you've got to have some serious antifreeze.
The last station I worked at always had beer in the fridge at the transmitter building. It was itemized as, you guessed it, antifreeze.