[R-390] Wanted: R-390 IF Deck/Parts

[ROSS HOCHSTRASSER]

Hi all, The Z-503 in my R-390 went open circuit and in a moment of desparation (not realizing that I had a spare 390A deck up in the loft...)  I disconnected the capacitor and zapped it with a 500 volt DC supply with a 1 K resistor in series. I was able to draw an arc and weld the break. It worked perfectly but when I realized that I had a replacement I replaced it. I still have the "zapped" one here for posterity.73 Ross W1EKG 
> On 10/22/2024 11:24 AM EDT Jacques Fortin <jacques.f at videotron.ca> wrote:
> 
>  
> Hi Alex,
> Despite being physically different, the Z503 parts in the R-390 and R-390A are electrically identical.
> Meaning that a Z503 extracted from a R-390A IF deck can be used to replace the defective one in your R-390.
> See picture of a Z503 from a R-390A.
> Some other info about in the .pdf attached.
> Just being curious: how yours failed ?
> Is the winding test open ?
> Can you provide some pictures of it with the cover removed ?
> 
> 73, Jacques, VE2JFE in Montreal
> 
> -----Message d'origine-----
> De : r-390-bounces at mailman.qth.net <r-390-bounces at mailman.qth.net> De la part de Alex Hopper
> Envoyé : 22 octobre 2024 10:21
> À : Barry <n4buq at knology.net>
> Cc : R-390 Mailing List <r-390 at mailman.qth.net>
> Objet : Re: [R-390] Wanted: R-390 IF Deck/Parts
> 
> All,
> 
> Yes, the part in question is Z503 from the IF subchassis.  I have attached photos here.  I would be very grateful for any hints/leads on where to find this part!
> 
> Thank you,
> -Alex
> 
> 
> 
> 
> 
> Barry <n4buq at knology.net> schrieb am So. 20. Okt. 2024 um 11:41 PM:
> 
> > Hello, Alex.  Welcome to the group.
> >
> > Are you referring to Z503?  It would be good to identify the part by 
> > its designation as it will help others know exactly which part you need.
> >
> > Good luck with the repair,
> > Barry - N4BUQ
> >
> > > Hello All,
> > >
> > > New to this mailing list, and hoping I can get some help.
> > >
> > > I have an R-390 (non-A) out for restoration now and unfortunately it 
> > > had
> > a
> > > bad inductor on the AGC circruit of the IF deck.
> > >
> > > If anyone has a scrap/spare deck, or acces to parts off one, I would 
> > > be forever grafeful!  Send me a message and maybe we can make 
> > > something
> > work.
> > >
> > > Thanks!
> > > -Alex
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