[Heathkit] Heathkit Power Transformers

[Meir WF2U]

Back in the early 60's I had a DX-40/VF-1 I bought used. I ran the
transmitter for a few hours almost daily, mostly on CW, and some AM. I never
had a problem with it; the transformer was barely warm to the touch. Finally
I sold it after 5 years, when I could afford a used transceiver. 
I wonder how many burnt-out transformers were caused by leaky or shorted
caps, rectifier tube internal short, or incorrect component values/wiring
errors. 

73, Meir WF2U
Landrum, SC


-----Original Message-----
From: heathkit-bounces at mailman.qth.net
[mailto:heathkit-bounces at mailman.qth.net] On Behalf Of Glen Zook
Sent: Monday, January 30, 2012 9:01 PM
To: William Houghton; heathkit at mailman.qth.net
Subject: Re: [Heathkit] Heathkit Power Transformers

Most of the equipment didn't have overloaded power transformers.  For some
reason, the DX-35 and DX-40 did.  However, in the DX-60 the power
transformers do not usually fail.  Same for the DX-20.  I haven't heard of
any real problems in the DX-100 series or Apache.  At least mine are still
going strong.  Same for the SB- Line and the HP-23 series power supplies.
 
Glen, K9STH Website:  http://k9sth.com


________________________________
 From: William Houghton <rdrbill at pacbell.net>
To: heathkit at mailman.qth.net 
Sent: Monday, January 30, 2012 7:01 PM
Subject: Re: [Heathkit] Heathkit Power Transformers
 
I just read the sad story of the demise of the DX-40 power transformer and
Glen 
Zook's comments that they often failed after just a few weeks. This begs the

question as to whether most Heathkit ham gear was powered by undersized
power 
transformers? Yet, here we are 30 to 40 yrs later and a lot of pieces have 
survived with the original transformers still buzzing & humming for our
hamming.
 
73,
Bill, WA6NEQ
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