|
I have had a Yaesu G-450 rotator for about 3 years. For the past 6 months, the direction indicator on the controller stopped being accurate (it would speak up and slow down no matter how tight or loose the indicator). Now, the whole thing does not work. I checked the wire and connector to the controller carefully, even jiggling the plug and such. I took the rotator off of the tower and opened it up. I did not see anything unusual. I put it back together and discovered that the problem was that it only goes in one direction as soon as the controller is powered on. When it reaches the stop, the motor keeps trying to move it (it makes a soft buzzing sound). Flipping the switches on the controller has no effect and I checked the connections again. Any idea on what I might try or do, or where the problem lies? Thanks and 73, Robert |
|
Robert, not being familiar with the physical makeup of your specific rotator and not having a schematic diagram to look at the electrical/electronic circuit configuration I will not be able to give you much assistance. However that being said, when I had my five HAM-IV's and one AR-40 they all had a 360 degree variable resistor (VR) to control the rotation and if that resistor ever had a portion of it open the rotator would do funny things like your is doing. I do not know if yours has a VR like mine did, but if it does check to see that it is in good shape. Sorry I can not be of more assistance than that. Best Regards K4RFE Larry Retired RF Engineer |
