My schematic shows another fuse, a 1/8 amp in series with the meter.
There's also a rectifier diode (half wave rectifier), a filter cap, and a
zener diode before that fuse. Check the fuse and if it's OK, then see if
you have 13 VDC at the fuse. The meter lamp runs off of the same
transformer secondary, so you know the transformer's OK. So, it's very
likely one of the components I mentioned. If you don't have a schematic,
the complete instruction manual with schematic is available for download
from the MFJ (Hy-gain) website for free.
73, Floyd - K8AC
----- Original Message -----
From: "FireBrick" <w9ol@billnjudy.com>
To: "TowerTalk List" <towertalk@contesting.com>; "Antenna List"
<Antennas@mailman.qth.net>
Sent: Saturday, January 28, 2006 12:34 PM
Subject: [TowerTalk] Hygain control box problem
> This morning I found my HyGain Control Box not to be working.
>
> Ham IV-CD45 model.
>
> I have a spare rotor, and using that on the cable and rotor worked fine.
> So it's not the rotor or the cable.
>
> The box lights up, fuse is good, pilot light over the meter.
>
> But absolutely no action. Meter show due south (to the left on the meter)
> Brake release, turn levers have no effect at all.
> I checked/replaced the starting cap with a spare with no effect. (didn't
> think that would
> work)
>
> the push button/calibrate knob has no effect.
>
> anybody have any ideas?
>
> PS. no signs of smoke or flames inside
>
>
> -----------------------------------------------------
> Multitasking: Screwing up several things at once...
> -----------------------------------------------------
>
> Bill H. in Chicagoland
> webcams at http://24.14.49.4:8080
> weather at http://mywebpages.comcast.net/w9ol/WX/HH.htm
>
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
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