Hi Sebastian, I had the same problem on my control box last week. Turns out there was a shorted turn in the transformer. Remove the cables to the rotator and LVB tracker and check you are getting the 11V and 26V AC out of the transformer. I just sent it down to one of the specialist companies the re-wind transformers in the area to fix it rather that going though the pain of sending it back to Yeasu for replacement.
Best Regards, Allan Saul ZS1LS -----Original Message----- From: Sebastian [mailto:w...@bellsouth.net] Sent: 09 July 2009 01:15 AM To: AMSAT BB Subject: [amsat-bb] Murphy on my G-5400B control box Seems I can't get a break from Murphy. A couple of weeks ago, I received my azimuth rotor & G5400B control box back from Yaesu after the rotor had failed. Yesterday I noticed the control box had turned off, and was generating a lot of heat. Sure enough, I checked the fuse, and it was blow. Opening up the case and looking for obvious problems, such as cold solder joints, burned components, etc., didn't show anything interesting; other than a hot transformer. Unit blows fuses as soon as they are replaced. So before I call up Yaesu and am off the air for another 2 or 3 weeks, any ideas from someone who perhaps has had the same problem? I had it connected to my LVB tracker, which no longer functions, as I believe it gets its power from the control box. 73 de W4AS Sebastian _______________________________________________ Sent via amsat...@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
