[Boatanchors] [HallicraftersRadios] HT32A bad transformer

[Carl]

Both transformers have a propensity to short B+ to filament winding due to 
poor insulation and breakdown.

Carl
----- Original Message ----- 
From: "RAY FRIESS" <rayfrijr at msn.com>
To: <HallicraftersRadios at groups.io>; "BOATANCHOR QTH" 
<boatanchors at mailman.qth.net>; "Walt Cates" <cateswa at msn.com>
Sent: Friday, June 18, 2021 7:10 PM
Subject: Re: [Boatanchors] [HallicraftersRadios] HT32A bad transformer


>I have a 32 that I'm thinking of parting out.  Transformer is good.  Lots 
>of good stuff for spares.  I have two 32 and two 37.  So I'm in good shape
>
> Get Outlook for Android<https://aka.ms/AAb9ysg>
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> ________________________________
> From: boatanchors-bounces at mailman.qth.net 
> <boatanchors-bounces at mailman.qth.net> on behalf of Walt Cates 
> <cateswa at msn.com>
> Sent: Friday, June 18, 2021 12:53:12 PM
> To: HallicraftersRadios at groups.io <HallicraftersRadios at groups.io>; 
> BOATANCHOR QTH <boatanchors at mailman.qth.net>
> Subject: Re: [Boatanchors] [HallicraftersRadios] HT32A bad transformer
>
> I just updated the data on the 32 and 37 power transformers. I added the 
> Hallicrafters part # and a couple notes.
> HT-32 | 
> WD0GOF<https://wd0gof.com/hallicrafters-radio/technical-discussions/ht/ht-32/>
>
> HT-37 | 
> WD0GOF<https://wd0gof.com/hallicrafters-radio/technical-discussions/ht/ht-37/>
>
>
>
> Walt Cates, WD0GOF
> https://wd0gof.com/Hallicrafters
>
> A majority of acceptance is not proof of correctness.
> https://wd0gof.com/bible-study/commentaries/
>
>
> ________________________________
> From: HallicraftersRadios at groups.io <HallicraftersRadios at groups.io> on 
> behalf of Bob Albert via groups.io <bob91343=yahoo.com at groups.io>
> Sent: Thursday, June 17, 2021 8:45 PM
> To: HallicraftersRadios at groups.io <hallicraftersradios at groups.io>; 
> HallicraftersRadios at groups.io <HallicraftersRadios at groups.io>
> Subject: Re: [HallicraftersRadios] HT32A bad transformer
>
> I think there is a differrence in one of the windings between the 32 and 
> the 37.
>
> On Thursday, June 17, 2021, 05:21:55 PM PDT, ray ffriess 
> <rayfrijr at msn.com> wrote:
>
>
> Do the 32 and 37 use the same transformer??
>
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> ________________________________
> From: HallicraftersRadios at groups.io <HallicraftersRadios at groups.io> on 
> behalf of Bob Albert via groups.io <bob91343=yahoo.com at groups.io>
> Sent: Thursday, June 17, 2021 2:14:05 PM
> To: hallicraftersradios at groups.io <hallicraftersradios at groups.io>; 
> HallicraftersRadios at groups.io <HallicraftersRadios at groups.io>
> Subject: Re: [HallicraftersRadios] HT32A bad transformer
>
> If nothing is connected to any secondary, the problem is the transformer. 
> Can you measure winding resistances or, better, inductances?  Removing 
> some of the loads from some of the secondaries isn't enough; you have to 
> remove them all before you can verify that you have a bad transformer.
>
> Blackened wires do not prove anything.
>
> It's a lot of work to remove all the loads but you have to do that anyway 
> if you are going to pull the transformer.
>
> Bob K6DDX
>
> On Thursday, June 17, 2021, 01:05:02 PM PDT, stephen white 
> <sswhite at mchsi.com> wrote:
>
>
> I am pretty certain the power transformer is bad in my newly acquired 
> HT32A...Blows fuses with tubes removed and 60/40 uf cap removed.  So am 
> wondering if it has the 5v to HV short?  At the bottom of the transformer 
> bell housing the wires coming out are blackened for an inch or two...
>
> Can a mere mortal rewind one of these??  Or am I relegated to try and buy 
> a new one or find a good donor??  What are my options??
>
> Steve  NU0P
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