I have a 66 and may or may not be able help.
Can you take a picture of the plug area on the machine? I have to assume there is a motor on the back right of the machine. And a new foot controller might be in order. I'm pretty sure a new one can be purchased for about $20.
The silly thing that could be wrong is the light bulb is unplugged/needs to be replaced. Joann's sells replacement bulbs (usually).
Sorry late reply! Actually the light bulb turns on fine which is good. Yep, the motor is on the back right side.
I'll try to take a picture tonight, but I will say that whomever had this machine previously must have rewired it and put electrical tape around the cords for the motor/foot petal at the beginning where they go into the machine. I wish I could just eye ball it to detect any problems with it, but my novice eyes don't know exactly what to look for. I mean, the cords have no exposed areas and they seem to be connected to the machine properly. But I will take a picture!
It sounds electrical, rather than the motor. Can the cord be replaced without replacing the motor?
My 1970s mixmaster did pretty much the same thing, and it was just that the cord was old. There were no visible breaks, but somewhere inside was a gap between the wires.
Interesting about the wires being separated....see, I know nothing about wiring but this tells me that could possibly be what's wrong with mine. There are no breaks/exposes areas on my cords but who knows what's going on inside...
Does it have an on/off switch?
If so, I wonder if the toggle finally gave up the ghost. They can just give up the ghost like that.
Can you open it up, or are you comfortable enough to open it and plug it in, so you can test to see if power is going to the actual motor with a ticktestor? If not, is there a local sewing repair shop that can give you a cheepie or free look over and opinion?
Funny enough when I pulled this out of storage I kept trying to look for the on/off switch...embarassing! lol...I had forgotten the old machines don't have one. You just plug it in and push on the foot petal and it's supposed to hum away...which mine does not lol.
I'm novice enough to not know what a ticktester is, lol. Should I get one and try it? I suppose I will need to call around and ask who'd be willing to look it over without charging...