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[TowerTalk] Troubleshoot Yaesu G-800DXA Rotator

Subject: [TowerTalk] Troubleshoot Yaesu G-800DXA Rotator
Date: Fri, 05 Jan 2007 20:11:23 +0000
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I have used the subject rotator for almost 5 years.  Last March the rotator 
began behaving erratically and I returned the control box to Yaesu.  6 weeks 
and $100 later they returned it saying they had "realigned" it (most of my 
problems were related to inaccurate manual antenna direction--see letter 
extract below).  And the rotator worked fine.  Last week the rotator stopped 
working.  The control box powers up but nothing happens when I press the manual 
or preset controls.  I haven't been up the tower yet to check the molex 
connection so it's possible that the problem could be in the control cable (or 
it could be the rotator).  Before I get too involved here has anyone experience 
similar symptoms where nothing happens?  I hope to be able to borrow a spare 
control box to see if the control box is again the culprit.  Following is what 
I wrote to Yaesu in my March 2006 control box problem:

Here are the symptoms of my problem:
(1)               On power-up, the direction indicator automatically moves 
either CW or CCW up to 20-30 degrees and stops;  sometimes it comes back to its 
original position;
(2)               In manual control, it is difficult to get the antenna to stop 
on a fixed heading such as north; the antenna goes past it and I have to keep 
moving it back and forth to find the heading;
(3)               In the preset position, if I turn it to 90 degrees, sometimes 
the antenna stops 20 to 30 degrees off  that heading and I?ve now noticed that 
the indicator can show 45 degrees and the antenna is actually pointing north.  

Of course, nothing at all is happening now.  The antennas consist of a F12 C4E 
and a C3i 5 el Yagi 8 feet above it.

Thanks in advance for any help, 73 and HNY to all.


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