[Milsurplus] Unsoldered joints...

[Glenn Little WB4UIV]

Many years ago, I got a very beat up KWM-2 chassis from the scrap yard.
I had thoughts of making it work again.
That never happened.
While removing usable parts from the chassis, I found the reason it made 
it to the scrap yard.
A wire was looped through a tube socket pin and crimped.
No solder, but, there was red paint on where the solder should be 
showing that it was inspected.
So much for QC, I guess it really means Quick Check.

73
Glenn
WB4UIV


On 5/15/2017 11:44 AM, w4thq at cox.net wrote:
> During the 1960's, NASA issued a Soldering Spec. that eliminated twisting wires around terminals.  The requirement for making solder joints that depended only on the solder making the connection allowed bad terminations to be readily identified.
> John  W4THQ
>
>
>
> ---- "Kenneth G. Gordon" <kgordon2006 at frontier.com> wrote:
>
> =============
> On 15 May 2017 at 7:25, George Babits wrote:
>
>> Un-soldered joints happened all the time.  Nothing unique to surplus, or any
>> specific radio.  I had a Collins 32S-1 with an un-findable intermittent.
>> Finally found that one connection INSIDE one of the IF transformers had
>> never been soldered.
>
> When I was working as an electronic tech at the University of Montana, one of our professors
> had a very, very expensive Phillips research X-ray machine which would intermittantly shut
> down.
>
> That thing had something like 90 tubes in it.
>
> After a long night of digging into it, I found a no-solder joint on a filament connection to a
> critical tube socket in the power supply section buried at the very bottom of the unit, under at
> least 4 layers of wiring.
>
> I was pissed and the professor was pleased.
>
> Ken W7EKB
>
> ---
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-- 
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Glenn Little                ARRL Technical Specialist   QCWA  LM 28417
Amateur Callsign:  WB4UIV            wb4uiv at arrl.net    AMSAT LM 2178
QTH:  Goose Creek, SC USA (EM92xx)  USSVI LM   NRA LM   SBE ARRL TAPR
"It is not the class of license that the Amateur holds but the class
of the Amateur that holds the license"
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