[Heathkit] Regulator for PS-9000 Power Supply

[john]

I think I might  have the same problem too. I just purchased four UA78GKC 
and will sell 3.

I'll get them to you postpaid for $10 each to help recoup my costs.

73
John k5mo




At 10:42 PM 7/16/2010, Rob Doyle wrote:
>I have a PS-9000 that I recently acquired with exactly the same
>problem.  If you find a replacement part, I'd be interested.  I think
>I've shaken all the trees, however.
>
>I was just about to build a little PWB with an LM317 and a PNP driver
>transistor something like:
>
><http://focus.ti.com/lit/ds/symlink/lm317.pdf> Figure 14
>
>I think that can be added while leaving the unit in restore-able
>condition.
>
>Rob WA3TGF
>
>On 7/16/2010 11:12 AM, Mark K3MSB wrote:
> > Greetings !
> >
> > I'm trying to fix a PS-9000 power supply for the SS-9000 
> Transceiver,  and I
> > think the regulator is shot.
> >
> > The regulator (Heath Part Number 442-685) is the out of production
> > UA78GKC.   I cross referenced this to ECG1926, but it seems to be out of
> > production as well,  although it's still available from a few "out or
> > production" sources;  I have emails out to these places for prices,  but
> > nothing's come back yet.   I'm wondering if they don't want to deal with a
> > customer that want's only one unit.
> >
> > On the off chance....   anybody have a spare in their parts box they'd care
> > to sell?
> >
> > Thanks
> >
> > Mark K3MSB
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