Andrew and group,
Read this post and others about the 5500, and I am trying to figure out what do with my rotor or my controller.
My rotor has become more and more intermittent over time, so I opened up my cables and put molex connectors in line so I can debug. I started with impedance of the rotor. My Elevation is working now and my rotation is not. I pulled out the schematic and see that the rotor motor is on 4-5-6 with the common on 6 each and the up/down or left/right on 4-5. I measured the impedance of 4 & 5 against 6, and the Ele was near 2-3 ohms and the Ele was open. I am wondering if this is an intermittent internal limit switch? Taking my rotor apart is a huge deal, so I want to be sure I am looking at this situation correctly and what else should I be looking for or measuring?
Michael K3MH
-----Original Message----- From: owner-AMSAT-BB@amsat.org [mailto:owner-AMSAT-BB@amsat.org] On Behalf Of Angelo Glorioso Sent: Monday, March 28, 2005 8:21 AM To: glasbrenner@mindspring.com Cc: amsat-bb@amsat.org Subject: RE: [amsat-bb] G-5500 rotor motor woes
Hi Drew,
At least you got 3 years out of yours. I had my G-500 a month before the motor went out and had to send it to Yaesu.
Everything was balance as well. What I think happened is one of the buttons on the control box got stuck in one direction and caused the motor to burn up.
What I did was change the fuse that Yaesu uses from a 2 amp AGC to a 1 amp slow blow fuse. Just in case this happens again, at least the fuse will blow before causing the motor to go out.
73 de Angelo
---------------------------------------------------------
If you don't ask, you will never know!! >From: Andrew Glasbrenner glasbrenner@mindspring.com >Reply-To: Andrew Glasbrenner glasbrenner@mindspring.com >To: amsat-bb@amsat.org >Subject: [amsat-bb] G-5500 rotor motor woes >Date: Mon, 28 Mar 2005 09:20:31 -0500 (GMT-05:00) > >About 3 weeks ago my azimuth rotor motor bit the dust. The rotor turned left fine, but not right. I tore into the unit and found the windings on the motor to show 4 ohms in one direction, and only 1.5 in the other. Yaesu wanted about $90 and shipping for a replacement, but I found a G-450 locally for about the same money. After swapping the motors (identical) and reassembling it seems to work fine, but I can find no reason for the failure. > >Anyone been down this road before and have some hints? I'd rather not repeat this procedure in a few weeks. I also expect longer service from a 3 yr old rotor that cost almost $600. The inside was dry, and well greased. I don't think it's overloaded either, with a M2 436cp30, Cushcraft 10x10 2m, and 3ft S band dish near the center, all well balanced. > >73, Drew KO4MA > >PS Anyone got a spare motor for my 450? Or need a 450 control box and parts? ;-) >---- >Sent via amsat-bb@amsat.org. Opinions expressed are those of the author. >Not an AMSAT member? Join now to support the amateur satellite program! >To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org ---- Sent via amsat-bb@amsat.org. Opinions expressed are those of the author. Not an AMSAT member? Join now to support the amateur satellite program! To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org