It sounds to me like something is binding. These rotors run at 1 RPM; you
could try running it for 30 seconds and verify that it moves 180 degrees. Then
the same in reverse.
If the motion is correct, then the pot is probably bad. If not, then check for
anything that might keep the whole kit
Tim; I believe there are two pots each for the azimuth and elevation
meter adjustments. One pair are for the internal meters, the other pair
for 0-5V to be used by the TrakBox (or similar) ADC. Make sure you
turned the correct pair. However first I would make sure the internal
7806 voltage
Tim,
A few possibilities exist.
1. The rotator is mechanically hosed. This includes the pot mounting an
gears and stuff inside that drive the pot.
IIRC the 5400b has no mechanical stops and relies on fuses to protect the
windings of the motors.
You can check this by moving the rotator and looking