Re: [TenTec] Pegasus DC Input Issue

[John Huffman <hjohnc@gmail.com>]

Bob -

The Pegasus does not switch the power supply.  The power supply is on at 
all times.  The ON/OFF switch on the front of the Pegasus is a two wire 
connector labeled "1" that goes to the DC input board that holds the relay.
I tried the Pegasus with two different power supplies, one switcher and 
one linear.  It does not work on them, but does work off a battery.  I'm 
confused.
Thanks for the suggestion.

73 de K1ESE
John

On 4/28/2012 8:55 AM, Robert Mcgraw wrote:
> By chance is the AC supply switched by the power switch on the Pegasus?
> If so there 4 wires on the power cable, 2 for DC and 2 for the AC
> switching line.  If the switch in the radio that controls the AC line is
> defective then the power supply will not turn on, therefore the radio
> will not turn on.  Clue is that it works on the 12V battery says the
> relay and circuit in the radio is OK.
>
> 73
> Bob, K4TAX
>
> > Through various misadventures, the DC input relay on my Pegasus will not
> > engage when power is applied, mostly.
> >
> > I suspect the two transistors or the one diode near the relay coil.
> > Perhaps this symptom would give one of you a clue to the component(s) I
> > should replace.
> >
> > The DC input relay will not trip and power up the Pegasus using a
> > regular station 12v power supply.  It will trip and power the Pegasus if
> > I use a battery for the 12v.  I am guessing a grounding issue here,
> > somehow.
> >
> > Any suggestions greatly appreciated.
> >
> > 73 de K1ESE
> > John
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