As far as I know, the relevant ('temporary/improvised') concept is generally
accepted to be (or at least originally to have been) "jury-rigged."
https://en.oxforddictionaries.com/definition/jury-rigged
http://archives.cjr.org/language_corner/the_jury_is_in.php
Nothing to do with WWII, though perhaps the convenient near-homonym led to a
separate, later usage through mis-hearing the original usage. At best both are
"correct" for the concept, conservatively/prescriptively only jury-rigged is.
We now return to troubleshooting the Atari PSU, already in progress.
> On Aug 20, 2017, at 2:01 PM, drlegendre . via cctalk <[email protected]>
> wrote:
>
> Arrgh! /Jerry rig/, not Jury rig! Jury rigging is something entirely
> different..
>
> The former comes from WWII era slang, when German soldiers were called
> 'Jerries' (among other things); see Jerrycan for instance. As has often
> been the case, as the war drew to a close and the supply chains broke down,
> everything needed to run the army dried up, hence the need for quite a few
> "field expedient" (read: improvised) repairs to machinery and weapons.
>
> And I don't think they even had duct tape in those days, did they? More of
> a bailing wire era, one would suspect..
>
> On Sun, Aug 20, 2017 at 12:15 PM, Adrian Graham via cctalk <
> [email protected]> wrote:
>
>>
>>> On 20 Aug 2017, at 16:32, Mattis Lind <[email protected]> wrote:
>>>
>>>
>>>
>>> söndag 20 augusti 2017 skrev Adrian Graham via cctalk <
>> [email protected] <mailto:[email protected]>>:
>>> Hi folks,
>>>
>>> I think I’ve mentioned this PSU before but the question I have might be
>> applicable to other cheap switchers. This lump for the original Atari 520ST
>> is run by an NE5561N control chip with a D45H1 switching transistor. It’s
>> supplied by a multi-tap transformer giving 2x2 feeds of 6VAC and 14VAC with
>> an eventual output of 5V@3A, 12V@30mA, -12V@30mA.
>>>
>>> This one will run under load for around 10 minutes then the 5V rail will
>> gradually collapse over the next few minutes. Turn it off and leave for a
>> minute or so and it’s back to normal, repeat as above.
>>>
>>> Heat related? Try freeze spray to check if it recovers or stays working
>> longer.
>>
>> I need to jury rig something with a breadboard to allow me to run it
>> outside the enclosure, in normal usage it’s solder side up with the
>> components covered. I can’t remove the transformer lump because it’s sealed
>> in resin. They really didn’t want people to attempt to fix these things :)
>>
>>
>> —
>> Adrian/Witchy
>> Binary Dinosaurs - Celebrating Computing History from 1972 onwards
>>
>>
>>
