Yes, I have a G2800 and it was behaving in a similar manner
after a severe thunderstorm. Yaesu repaired the
control box for about $80 or so. I'm not home and I forget
the components that were replaced, but a good thing to check
first is the voltage going to the rotor. If it is low (I
believe it should be about 8 VDC), check the voltage
regulator on the top board. It also should be 8 VDC. If
not, it's your problem, or at least one of the problems.
----- Original Message Follows -----
Subject: Re: [TowerTalk] Yaesu G1000 Rotator
Date: Wed, 20 Jun 2007 22:21:15 EDT
> One of my Yaesu rotors (G-800) has THE EXACT problem and
> basically the EXACT readings as you have. I suspect it
> is the control unit in the shack, maybe damaged from a
> lightning surge. At this QTH, the potentiometer in the
> rotor itself was checked and okay.
> As a temporary measure, I have a digital ohmmeter attached
> to the direction indicator wires coming into the shack.
> For this unit, 5 ohms is full left, 455 ohms is full
> right rotation. I turned actual heading of antenna to 005
> degrees for 5 ohms (left), 360 ohms readout then
> matches 360 degrees, and full right rotation of 090
> degrees has areading of 455 ohms (365 + 090).
> This controller problem is quite common. Most instances I
> have read about usually confirm an indicator issue,
> rarely is it an actual bad pot in the rotor. With those
> similar readings, I would believe it is the control unit.
> Steve, W5KI
> Date: Thu, 21 Jun 2007 07:59:33 +0800
> From: "BA7NQ Terry" <email@example.com>
> Subject: [TowerTalk] YAESU G1000 ROTATOR
> Hi OM,
> MY yaesu G1000 ratator just have a problem, the indicator
> degree of controller is unequal with the rotator degree.
> When the rotator rotate from 0 degree to 90 degree, the
> indicator only show from 0 to 60 degree,
> and continue rotate from 90 degree to 180 degree, the
> indicator only show from 60 degree to 100 degree,
> and continue roate from 180 degree to 450 degree, the
> indicator running slowing... when the auto rotaor stop at
> 450 degree, the indicator just in about 210 degree.
> The G1000 can rotate from 0 degree to 450 degree, it
> works ok and can auto stop in 0 degree and 450 degree,
> but the indicator just only show from 0 degree to about
> 210 degree...
> Any idea is welcome... thank you very much.
> 73! de BA7NQ Terry
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