Weird TS-9 Gain Pot ?

[MartyMart]

I just picked up a TS-9 reissue cheap as it wouldn't power up.
Someone had wired both battery snap leads to earth !
Volume and Gain pots were "swopped" so put back in the wrong "holes" and the gain pot
shaft was "pushed in" and broken off.
I was about to put a new alpha 1m pot in as a gain control and noticed that only the wiper and one
outside lug were ever soldered !
The other outside lug was clean and had never been soldered and it looked "original" just like the other twp pots.
What gives ?
I thought the gain pot in a TS-9 was wired : outer lugs and one connected to the wiper also.

Looks weird to me but seems to "work" now as expected !!

Thanks,

Marty.

[anchovie]

The TS gain pot is wired as a single variable resistor, so the minimum you need is the wiper and one outer lug. If you don't short the other outer lug to the wiper then all you've got is another variable resistor going nowhere, which isn't necessarily going to be a problem.

[MartyMart]

I get it, but I have several schematics and some show one outer lug disconnected  ( fuzz central )
and some with wiper connected to an outside lug ( Jack Orman )
I take it that the only advantage to wiring the "spare lug" is to stop the pot going "open" if it fails

Thanks,

MM.

[anchovie]

I guess in the case of non-factory schematics, the person drawing it may short the un-used lug as a matter of best practice.