Yes, that's all the tuner
Sure, anything is possible, although it seems original. Very little signs of servicing and all the bolts were present. What really gets me is the lack of any labels or tube chart.
I started working on the power supply last night.
I removed the two caps on insulated wafers. One had vented and the other has excessive leakage.
A little help from a heat gun got the old cardboard covers off. They are Zenith branded and I'll reuse them to hide the new caps.
Naval Jelly took care of the rust.
New caps installed.
Test fitting of the old covers. I'll clean them up a bit before securing them.