Yes,  but I'm with ampfixer on this one.  You said the tubes were all not glowing.  If they're not glowing, they won't work.
 
It's a very simple circuit, the mains power transformer will have a 5 - 6 volt output that feeds all of the tube heaters, maybe with a fuse inline, maybe not.  If the tubes aren't lit, there's your problem.

As I mentioned in one of my post, the smaller transformer with about (7) wires coming out from it was just a little warm with a very low hum.  The larger transformer was ice cold, it had (3) wires.  Is the larger transformer the output transformer?  And I searched the web to try to find out if I could identify an internal fuse. I couldn't find any info on that.
Even if something was burned out in the circuit leading to the tubes, you're saying the tubes will still be glowing?

Even if something was burned out in the circuit leading to the tubes, you're saying the tubes will still be glowing?

As long as it wasn't part of the tube heater supply, the tubes should still be glowing.
 
Be careful putting your fingers in there to see if things are warm. 

I've had my fingers in there already, but only touching parts that were not metal, except the main body of the transformers.  The smaller transformer is the only part that was not cold.

 
Take a look at this circuit diagram for my tube amp.
 
Even if you have no clue what you're looking at it's clear, at the bottom of the drawing, how all the tube heaters are totally separate from the rest of the amp circuit.  You should also be able to see that the Power Light on mine is shown at the end of that chain.  So if the power light is on, there IS power to the tube heaters.
 
However, the power light could be connected anywhere,  if it were first in the chain then any break in the wires after that would turn off the tubes and the amp would be dead, but the power light would still be on.
 
 
Edit:  The power light doesn't have to be part of the tube heater circuit at all....   it just happens to be in my amp.

For safety's sake. Get someone with some experience poking around a tube amp to help you.

You're right, I'm waiting for a return call today from a tech.
I'm 68, don't need to die from amp voltage.
 
Thanks Reuben

Thanks,
There are too many things that can go wrong in a circuit.  I just hope it's not a transformer or the circuit board. I'll just take it to a tech, and hope that it's not too costly!

If the person knows guitar amps this should be a quick diagnosis and perhaps the repair work can be done at less than $80 / hr.

Wishing you the best of luck!