[Heathkit] O-12 power transformer

[rbethman]

Suggestion,

Contact <XFRMRS at ROADRUNNER.COM>, Gary Brown.  He indeed does transformer 
rewinding.

This is most likely the best path to go.

Were you to locate "another" O-12 transformer, the probability is fairly 
high that it would fail in short order due to age.  The other 
possibility is that any you would locate is either bad or in very poor 
shape.

YMMV,
My $0.02
Regards, Bob - N0DGN



On 3/10/2015 5:36 PM, tchesek wrote:
> I thought I could research an alternative but had no luck.  A Heathkit transformer cross reference shows that part number being used in the O-12 only.  The 1984 parts master file shows these specs for that part number: 1440MT43mA, 6.3CT3.A, 6.3NT.6A.  The two 6.3 volt outputs would be fairly easy to replace but the 1440 volt multitap would take some creativity.  I don't have an O-12 or manual so I don't know how many taps the 1440 winding has or what the specific voltages are for those taps but I picture a kludge of transformers to replace it.  Your quest for the unique original transformer is probably the best choice.
>
> Good luck,
> Tom K3TVC
>
> -------- Original message --------
> From: Richard Knoppow <1oldlens1 at ix.netcom.com>
> Date: 03/10/2015  4:40 PM  (GMT-05:00)
> To: Heathkit List <heathkit at mailman.qth.net>
> Subject: [Heathkit] O-12 power transformer
>   
>        I have an O-12 which was given to me some time ago. It had
> probably been in storage for many years.  It ran OK for a few days and
> then the power transformer lost a winding.  I checked the filter caps,
> etc and they all seem OK so something else happened.  Anyway, I would
> like to find a replacement transformer. The handbook lists this as part
> number 54-26,  Please let me know if  you have one via private e-mail.
>