Digest for sci.electronics.repair@googlegroups.com - 9 updates in 3 topics

Foxs Mercantile <jdangus@att.net>: Apr 05 09:13AM -0500

On 4/3/2017 9:38 AM, Peter Wieck wrote:
> Are you trying to replace a unit, or looking for historical information?
 
Like having a RCA tube manual so you can tell the difference between
a 12AU7, 12AX7 and a 12SN7.
 
 
 
--
Jeff-1.0
wa6fwi
http://www.foxsmercantile.com
 
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"pfjw@aol.com" <pfjw@aol.com>: Apr 04 01:07PM -0700

Fixya will lead to a for-sale site, where this manual may be purchased. Or you can purchase a complete NIB unit with manual on eBay for about the same $$.
 
Peter Wieck
Melrose Park, PA.
oldschool@tubes.com: Apr 04 04:58PM -0400

On Tue, 4 Apr 2017 13:07:58 -0700 (PDT), "pfjw@aol.com" <pfjw@aol.com>
wrote:
 
>can purchase a complete NIB unit with manual on eBay for about the same $$.
 
>Peter Wieck
>Melrose Park, PA.
 
During my search, I did end up on some site that claimed I could buy a
manual, at a cost of more than I paid for the device. This device is not
in need of repair, but I am not fully understanding how to use it, which
is why I hoped to get a free manual. Looks like I either pay too much
for a manual, or just use the trial and error method. As far as a free
manual, I guess I am S.O.L.
 
Radio Shack was once a good company. Yea, they did lack a good selection
of parts, and some of their stuff was over priced, but their radios and
other devices were generally worth the cost and RS had really good
support as far as getting free manuals and parts for their devices. I
knew they had gone bankrupt, but did not know they were now owned by
Sprint. What I do know, is that in the last decade or so, it seemed
their whole business was geared around cellphones. Now I know why. But
the cellphone business is no longer what it was. It's leveled off. THere
is a lot of competition, and most people now have phones and aside from
upgrades, there are few new customers, and less profit to be made since
costs are way down.
 
The nearest RS to me, lost their cellphone business. They said that was
80% of their business. They were facing a shutdown, but opted to become
an appliance store, and still carry RS products in the back of the
store. But the shelves are pretty bare now. I wonder how long that will
last???? I bet it wont last long....
John Robertson <spam@flippers.com>: Apr 04 04:19PM -0700


> But the real answer to my question is:
> Manuals are no longer available on the public Radio Shack web site.
> (I know they were available in they past).
 
If they were available in the past on the RS web site then see if you
have any luck using the WayBack machine on http://www.Archive.org. Many
is the time I have found manuals, etc. using the WayBack engine!
 
Just put the URL you are looking for and the WayBack machine will show
you all the dates it archived the site. The depth of the archive depends
on the site's Robots.txt file...
 
If you find what you are looking for consider uploading it to one of the
free sites that has been useful to you...
 
John :-#)#
 
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oldschool@tubes.com: Apr 04 07:11PM -0400

On Tue, 4 Apr 2017 16:19:29 -0700, John Robertson <spam@flippers.com>
wrote:
 
>If they were available in the past on the RS web site then see if you
>have any luck using the WayBack machine on http://www.Archive.org. Many
>is the time I have found manuals, etc. using the WayBack engine!
 
Thats a great idea. I never thought of that!
Allodoxaphobia <knock_yourself_out@example.net>: Apr 05 12:39AM

> pf: fixya = USELESS
 
fer shure. :-)
I used a trageted email addy to register there several years ago to
discuss an appliance problem. Within a week that email addy was spammed
from all over the world for all sorts of bizzar things.
 
Email to that addy now goes straight to a spam receptor process and is
reported upstream to all manor of blocklists.
 
Jonesy
--
Marvin L Jones | Marvin | W3DHJ.net | linux
38.238N 104.547W | @ jonz.net | Jonesy | FreeBSD
* Killfiling google & XXXXbanter.com: jonz.net/ng.htm
Bruce Esquibel <bje@ripco.com>: Apr 05 10:46AM

> an appliance store, and still carry RS products in the back of the
> store. But the shelves are pretty bare now. I wonder how long that will
> last???? I bet it wont last long....
 
 
I think I read they re-filed for bankrupcy again a couple weeks ago so that
should be the last nail in the coffin.
 
Also I think you wasted more time looking for a manual than doing your
trial-and-error routine, which would take like a whole 5 minutes.
 
I used to use those and there isn't much to understand, the general purpose
of it was to avoid moving cable around between 4 devices, two of which are
recorders and 2 players (laser or ced). You can route the output from disc
or aux into either vcr or record from vcr1 to vcr2, or the other way around.
The processor was just a line level video amp which main purpose was to
boost the signal where if you had a disc playing and wanted it fed to both
vcr1 and vcr2 at the same time, it wouldn't load the output of the disc.
Monitor is just which of the 4 devices you want routed to the tv.
 
Like I said, would take like 10 minutes to play around with it.
 
These were handy back when tv's had the sole video/audio rca-in jacks and
you had more than one "thing" to plug into it.
 
The ability to record from vcr1 into vcr2 or vcr2 into vcr1 by rotating a
couple knobs was the 2nd best feature. After that, meh.
 
-bruce
bje@ripco.com
Adrian Caspersz <email@here.invalid>: Apr 05 12:09PM +0100

>> have any luck using the WayBack machine on http://www.Archive.org. Many
>> is the time I have found manuals, etc. using the WayBack engine!
 
> Thats a great idea. I never thought of that!
 
Ah, light bulb moment. They categorised their scrapings.
 
https://archive.org/details/manuals_radioshack
 
But nothing found :-|
 
That mixer looks more like a trivial switch, and should be easy to buzz
out with a continuity tester to find the functions. I have a similar
Tandy Realistic 42-2115 tape control centre on the HiFi.
 
From left to right, I'd judge the purposes of the switches like:
 
VCR-1 & VCR-2
Selects sources for recording into each.
 
PROCESSOR
Connects via loop-out/loop-in an external video processor box in-line
with the selected input, hopefully* so that the enhanced signal can be
recorded with VCR-1 & VCR-2.
 
MONITOR
Merely connects to the source output, enhanced or not.
 
* should be easy to buzz out with a meter, or just try it.
 
Might not be you, but a lot of folks have issues with the directional
labels in & out, and yet fully manage to survive a trip to a supermarket
or the car park.
 
Do you really need the manual?
 
--
Adrian C
N_Cook <diverse@tcp.co.uk>: Mar 30 03:05PM +0100

The fancy plastic sheets for distributing the lamp light, microprism
sheet etc.
A thunder-sheet sound-effect "machine" for am-dram is one.
A fancy lamp-shade?
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