aceb
Specialist Contributor
- Joined
- Oct 2, 2007
- Messages
- 1,537
- Reaction score
- 841
- Points
- 113
- My Satellite Setup
-
Prof Tuner 7301 /
1.25m Gibertini + Inverto B.Ultra/C1W, Moteck H180, 68.5E-67W Ku/C-Band /
1.8m Precision PF + ESX241/Inverto Black Pro, 66E-63W Ku/C-band /
2.4m Fortec Star+Titanium C1W/Pride plate, 49E-58W
- My Location
- Sussex
Went to look at a friends dish today, problem being the positioner showing an E2 fault so I got him to order some reed switches suspecting it might be that at fault on the 24" actuator. Changed that, fault still there.
As soon as power was applied the actuator hummed and stopped due the positioner detected the F2 fault. Tricked it into continuing to supply power by rapidly shorting and unshorting the reed cables, motor hums but no movement.
Switched the power cables over to a 13.8V 10A PSU which should be man enough to move the actuator slowly but still nothing happened. (Ended up bringing his positioner back here and can confirm it's working correctly).
Removed the actuator from the mount and the arm spins quite freely and I can see the magwheel moving when I turn the arm. Opened up the motor and the brushes looks worn but there's plenty left on them and they make contact with the armature. Armature is free to spin by hand and the rear bearing and all internals look good and clean so I'm stumped as to what the problem is. What would cause the hum, the only thing I can think of is some of the armature windings have broken or shorted? Logically it's excess current caused by the stuck actuator but that doesn't seem to the issue here. The only thing I didn't check was a break between motor in and brush but I doubt anything would happen if that was the case?
Any thoughts on this one?
Does anyone have an old Superjack clone type actuator laying around, preferably with with a seized arm or broken bearing so I could cannabilise the motor section to see if I can get this one moving again? The price of new actuators is madness now and he hasn't got the money to spend on one.
As soon as power was applied the actuator hummed and stopped due the positioner detected the F2 fault. Tricked it into continuing to supply power by rapidly shorting and unshorting the reed cables, motor hums but no movement.
Switched the power cables over to a 13.8V 10A PSU which should be man enough to move the actuator slowly but still nothing happened. (Ended up bringing his positioner back here and can confirm it's working correctly).
Removed the actuator from the mount and the arm spins quite freely and I can see the magwheel moving when I turn the arm. Opened up the motor and the brushes looks worn but there's plenty left on them and they make contact with the armature. Armature is free to spin by hand and the rear bearing and all internals look good and clean so I'm stumped as to what the problem is. What would cause the hum, the only thing I can think of is some of the armature windings have broken or shorted? Logically it's excess current caused by the stuck actuator but that doesn't seem to the issue here. The only thing I didn't check was a break between motor in and brush but I doubt anything would happen if that was the case?
Any thoughts on this one?
Does anyone have an old Superjack clone type actuator laying around, preferably with with a seized arm or broken bearing so I could cannabilise the motor section to see if I can get this one moving again? The price of new actuators is madness now and he hasn't got the money to spend on one.
