Pull out the ferro cap and test it.
Or alternatively, take the cap out, tape up the leads that went to it, and
fire up the supply again and see if you get the same amount of sag under
load. If so, then it sure sounds like the cap is open.
--- Jeff
> Hi Jeff!
>
> Thanks for the reply.
>
> The no load voltage is about 14.1 volts.
>
> Bill...
>
> -----Original message-----
> From: "Jeff DePolo" [EMAIL PROTECTED]
> Date: Mon, 05 Feb 2007 16:28:07 -0800
> To: Repeater-Builder@yahoogroups.com
> Subject: [Spam] RE: [Repeater-Builder] Mastr II Station Power
> Supply Problem?
>
> > > I'm setting up a Mastr II VHF station for a 2 meter repeater
> > > and when I
> > > got to the power amp to check everything I can only get about
> > > 86 watts
> > > out of the 110watt PA. I noticed that the power supply
> > > starts to fold
> > > over at about 20 watts out and when I get to 80 watts the
> supply is
> > > only at around 8 to 9 volts.
> >
> > If this station is using the stock Mastr II supply, my
> first bet is that the
> > capacitor in the ferro circuit (7.5 uF IIRC) is bad.
> >
> > What's the voltage without load?
> >
> > --- Jeff
> >
> >
> >
> >
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
> --
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>
