Question about HOT voltages

[TinCanAlley]

Okay, I'm trying to fix an IBM Monochrome Monitor from '82. I have the Sams Photofacts service manual and have been following the diagnostic steps. I got only so far before I found something odd and no explanation for it in the SM.

I tested the power supply section and all readings looked good. So I moved to the horizontal output section and that's where I ran into a problem. The SM said to check for 24.7V at the emitter of the TR24. I got a reading of 27. Then it said to check the collector of TR24 for 14.9V. I got 27V again. Both the E and C have 27V. The SM only notes what to check if the voltage is missing, not if it is wrong or, in my case, the same. Now TR24 is what I always considered a HOT based on the package TO-3, but in this SM it is a transistor and the HOT is package TO-220.

Yes, my knowledge is limited, but I'm trying to learn. That's why I always defer to the expertise here. If you need more info, as I'm sure I've left out something needed, just let me know.

I wanted to attach the SM, but it is too large.