I’ve just reinstalled the 90 foot pit and turntable c/w roundhouse that was
lifted as a complete module from the old GER.
When I connect up the AC power to the motor terminals on the control box,
the red power light comes on but no matter what I try, the turntable doesn’t
move. There’s not even any motor hum indicating a jammed motor or some
other blockage.
Anyone have any ideas?
Roger, the red light indicates power to the box, but the output to the drive mechanism isn’t getting out, or isn’t getting past the wipers inside the hub. Assuming you have a solid connection in the jack at the controller, and that the cable is sound and doesn’t have a broken wire inside, or a broken solder into the hub wipers at the pit end, you may have a dirty wiper, or one that is not making contact for some reason. I can’t see why a motor or the rest of the drive would suddenly decide to give you grief just because you moved it.
Crandell
Crandell.
When I first put power to the box, both red LEDs lit up.
When I tried to “zero” the table it would not move.
If I tried to rotate the table, it would not move.
If you lift the table from the hub, all lights go out so there must be a return from the hub to the box which powers the red “On” LED.
I decided that perhaps a little maintenance was in order has it has sat on a basement shelf for two years.
Following the supplied instructions, I removed the circuit board and motor from the table and applied lubricant as appropriate and at the same time checked for broken wires or jammed gears. Everything was free and easy to turn I also cleaned the hub contacts, both the ones at the bottom of the table and the sprung pickups in the pit hub…
I applied power to the motor contacts and the motor rotated freely.
I reassembled everything.
Now I have no LEDs lit up at all. Both are dark but I do have power to the track and can run back and forth with no problems.
Worse off now than when I started. 
Hopefully it’s a broken wire, they are very thin. Perhaps a pinched cable with a broken conductor inside the insulation?
Ah well, back to the pit, so to speak.