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Re: 5400




Jerry, I believe the problem is internal to the control box on the 
elevation side.  The voltage on the rotor cable is good, it's just that the 
meter thinks it's higher than it really is.

73 de KB7ADL


At 03:34 PM 9/23/02 -0600, KK5YY@ARRL.NET wrote:

>Vince,
>
>It is most likely the pot in the elevation rotor.
>
>They will start to act up when they get dirty like
>after a dust storm or when the weather changes
>abruptly. Lots of folks change them but I have
>found contact cleaner works well to rejuvenate
>them.
>
>         73 KK5YY Jerry
>
>On Mon, 23 Sep 2002 12:38:56 -0600, you wrote:
>
> >
> >My 13 year old Yaesu 5400 control box started acting up last night for the
> >first time I've ever had a problem with it.
> >
> >The elevation side of the control box started acting weird. A change in
> >elevation in the rotor translated to a five times that amount displayed on
> >the meter. The voltage to the pot in the rotor is normal, and the
> >auto-tracker can still precisely point the antennas.  I turned the control
> >box off over night, and turned it on again this morning and it was back to
> >normal.  Some component must not be quite right after the box warms up.
> >Anyone have any experience with this?
> >
> >KB7ADL
> >
> >----
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