Alan, I did all of the swaps and checks and eliminated several possibilities. Rotors seemed OK, cables OK. Took control cover off and checked a few voltages, wiggled a few things. Put it back together and it works. Must be a loose ground or connection somewhere. Seems to be working fine now. Thanks all who responded. Not sure but seems like something loose in the control box.
73 Bill K3SV ----- Original Message ----- From: "Alan P. Biddle" <apbid...@united.net> To: "'Bill Gillenwater'" <k...@pa.net>; "'AmsatBBS'" <amsat-bb@amsat.org> Sent: Friday, January 28, 2011 9:51 AM Subject: [amsat-bb] Re: Yaesu 5500 Rotor Problem > Bill, > > Start by checking the connections in the shack at the controller. If they > are good, then disconnect lines 1, 2, and 3 on the elevation side and > check > the _cables_ with an ohm meter. You should read 500 ohms between 1 and 3, > and something intermediate between 1 and 2, and between 2 and 3. If the > antenna is parked, one of them will be close to 0 ohms, and the other > almost > 500 ohms, so it is better to point the antenna at 45 degrees or so. You > can > see a clear difference, and eliminate a shorted or open line. If this > checks good, then the problem is inside the controller. > > If you don't, then you either have a bad connection in the cable or > connector at the rotator, or the reference potentiometer is bad in the > rotator. The easiest way to check this is to swap the connectors at the > rotators. The systems are electrically identical. If the problem follows > the connectors, there is a problem in the cable or connector. If not, it > is > in the rotator. > > Fixing the rotator pot is messy but straight forward, requiring only > mechanical skills, and there have been several reports on how to do that. > Fixing the controller depends on what is wrong. In either case, Yaesu > will > repair them for a "modest" fee. > > Let us know what you find. > > Alan > WA4SCA > > > -----Original Message----- > From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On > Behalf Of Bill Gillenwater > Sent: Friday, January 28, 2011 8:21 AM > To: AmsatBBS > Subject: [amsat-bb] Yaesu 5500 Rotor Problem > > The meter for elevation on the Yaesu 5500 is not working. Any idea what > might be wrong? Are there places to have them fixed if I can't shoot the > bug? Thanks. Bill K3SV > _______________________________________________ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > _______________________________________________ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
