Just picked up a nice very, very clean one (from 1978?) and Variaced it on and seems to work except that I can't set it to display a trace but I see random pattern of dots, nice bright display with numerics. All the different settings I've tried won't make a trace.
In the PEN Function I see the spot moving up the left side of the crt then partially across the top of the screen and down.
I hope it's just a problem with the basic set up and if anyone can guide me I'd sure like to see if I can get a trace and some other functions if it's operational. On reflection I think it might be the vertical section but I hope it's my ignorance on set up.
Thanks
Hank