Heathkit IT-1 Isolation Transformer

[justaskin]

Pulled out a Heathkit IT-1 that I acquired a while ago to assess it's condition. I replaced the decayed power cord with a new molded polarized plug lamp cord, put in a correct 2A fuse, and crossed my fingers and flipped the switch (it seemed to be in pretty good condition, so I skipped the powerstat/dim bulb setup on this one).
All the smoke stayed inside, but the voltmeter only went half scale to about seven eighths scale when the knob was turned from stop to stop.
While I had the unit apart, I looked at the working parts, and the knob rotated a wiper, like a powerstat, across one of the transformer windings.
Next step will be to see if the device's meter corresponds to actual output, but if, as I suspect it will,
does anyone have any thoughts as to what else I might check?
TIA

[Andy Watson]

Sounds like it's working.

"The transformer has an adjustable slider that allows the output voltage to be adjusted between about 90 VAC and 130 VAC. The front panel includes a 0 - 150 AC VOLTS meter that measures the output voltage, ... "

https://www.w6ze.org/Heathkit/Heathkit_018_IT1.pdf

[justaskin]

Well that's fascinating, and thanks very much for the pdf! It's "fascinating" because I think of Heathkit gear as being well thought out and engineered, and it seems odd to have that narrow a range. Guess I can put that particular antique up on the shelf with my collection of misfit toys, but this time it will have a manual ;-)