Various things to try. .
Check the connections at the screw connectors on the back of the control unit. Sometimes they work loose.
If at all possible, swap the connectors at the rotators. The circuitry is identical in the G-5500. If the azimuth still doesn't move when you activate the elevation controls, it is a rotator problem.
If it does move after switching the connectors, the problem is in the azimuth wiring, or the control box. Disconnect wires 4,5,6 and measure the DC continuity to the rotator. You should see a couple of ohms 4-6 and 5-6, and about twice that 4-5. If the continuity is bad, it is a broken wire or connector. It is unlikely, but possible, that both limit switches have failed. If the continuity checks good, then look at the voltage from the control box. Make certain you see AC voltage between 4-6 and 5-6 when you close the appropriate switch.
If everything checks out, it is probably the phase shift capacitor inside the motor. Let us know what you find.
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Peter Portanova Sent: Tuesday, July 26, 2011 4:27 PM To: [email protected] Subject: [amsat-bb] Re: G5500 Azimuth issue
I have a G-5500 and I cannot move the azimuth controls, I also have the LVB tracker and when I try to manually change CW or CCW on the main unit or LVB it does not respond, the elevation is fine. I would appreciate any ideas on where I should begin to determine which part has failed, thank you.
73's Pete WB2OQQ www.massapequanyweather.com
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