Keyboard players - need your info

I have a Hammond "Special Edition Model 8214" that a friend gave to me.
Here's a pic of one in great condition - http://newjersey.craigslist.org/msg/1428234420.html
Mine isn't in great condition, but it also has bass pedals.
I've just started to check it out, but have no idea what all of these slider-thingies do, or the flipper thingies, or much of anything else, really. The volume on the thing goes up & down on its own, so there's likely a short in it somewhere, & the Leslie unit doesn't seem to work at all.
Where can I get info on this?
Is this thing gonna be worth my time & dollars to fix?
Where does one find info on these older, rarer keyboards?
Here's a pic of one in great condition - http://newjersey.craigslist.org/msg/1428234420.html
Mine isn't in great condition, but it also has bass pedals.
I've just started to check it out, but have no idea what all of these slider-thingies do, or the flipper thingies, or much of anything else, really. The volume on the thing goes up & down on its own, so there's likely a short in it somewhere, & the Leslie unit doesn't seem to work at all.
Where can I get info on this?
Is this thing gonna be worth my time & dollars to fix?
Where does one find info on these older, rarer keyboards?