Jeff,
The big question is, What is it doing or not doing ?
I had a similar problems with both the elevation and azimuth sections of one of my G5500's. The problems occurred about 3 years apart. The symptom was I could hear the motor but the rotor did not turn.
The cause was the setscrew that holds the "Bow Tie" cam to the motor shaft in the brake came loose.
If this describes your problem, I suggest you check the set screw. If not, keep it in mind for the future.
BOB KO6TZ
I'm back up here in the frozen north for the holidays and today had some time to work on my G-5500's azimuth problem. I took my 5500 control box up here with me from my station in Florida to help test. Now I've got it down to the Azimuth rotor itself. I used to have a repair guide for this rotor, but I haven't worked on one in many years and 2 moves ago and can't find it anywhere including online. Does anyone have a copy they could email me? I have the cable disconnected from the rotor control box. I'm interested in taking some meter readings to try to determine what parts if any to order from Yaesu. Thanks in advance.
Everyone have a very Merry Christmas, happy holiday, and a HNY.
73 Jeff kb2m