Digest for sci.electronics.repair@googlegroups.com - 12 updates in 5 topics

amdx <nojunk@knology.net>: Mar 19 02:41PM -0500

On 3/17/2016 8:01 AM, MJC wrote:
> confusion! Even if all enamel is now also the sort that turns into flux
> if you try to solder the wire...
 
> Mike.
 
Far as I've seen, the latest change (20 yrs) was to a higher
temperature enamel that is Brown. The change was made for electric
motors because with VFD's they can run at higher temperatures.
Mikek
Sjouke Burry <burrynulnulfour@ppllaanneett.nnll>: Mar 19 09:15PM +0100

On 19.03.16 2:12, Cursitor Doom wrote:
> going to require a steady hand and a good eye - but I have neither! :(
> However, it's very late here now so I'll report back tomorrow with the
> results - *if* I can pull it off.
 
Eye sight is what made me buy a "jewelers headband loop",
feed that to google pictures to see one. :)
MJC <gravity@mjcoon.plus.com>: Mar 19 09:12PM

In article <56edb461$0$4110$e4fe514c@textnews.kpn.nl>,
burrynulnulfour@ppllaanneett.nnll says...
 
> Eye sight is what made me buy a "jewelers headband loop",
> feed that to google pictures to see one. :)
 
Probably better to spell it "loup" if you want to do a search (though no
doubt Google will suggest that)...
 
Mike.
Cursitor Doom <curd@notformail.com>: Mar 19 09:38PM

On Sat, 19 Mar 2016 21:15:10 +0100, Sjouke Burry wrote:
 
> Eye sight is what made me buy a "jewelers headband loop",
> feed that to google pictures to see one. :)
 
Yeah, I've got one with a little light in the centre; very useful! Still
got rotten motor skills, though.
legg <legg@nospam.magma.ca>: Mar 20 09:43AM -0500

On Fri, 18 Mar 2016 20:57:34 -0000 (UTC), Cursitor Doom
 
>Indeed they are - very! Anyone who can come up with a method for
>establishing if they're conductive and if so, to what extent deserves a
>Nobel Prize, I reckon.
 
If they are water soluble, you might just clean the whole unit in your
dishwasher.
 
Depends on whether the aim is repair, or donation to science. If the
latter - ship to mfr in sealed bag with note attached - expect no
response.
 
RL
Cursitor Doom <curd@notformail.com>: Mar 20 03:36PM

On Sun, 20 Mar 2016 09:43:10 -0500, legg wrote:
 
> latter - ship to mfr in sealed bag with note attached - expect no
> response.
 
> RL
 
I won't be sending it back to the makers; like you say they're an
ungrateful bunch.
I'd like to power the board up and check for signs of life - see if that
xtal's working and so forth. But in view of those growths it seems
pointless unless I can get the back off and inspect the reverse side for
further signs of it spreading. But I don't want to risk damaging it in
the process. I'm not very good with practical things like that. They
invariably take FAR longer than I expect at the outset - and then I get
threatened with divorce. :(
"pfjw@aol.com" <pfjw@aol.com>: Mar 20 08:13AM -0700

Probably less applicable to some, but those of you who often get stuff sent to them from places and parts unknown, this is entirely applicable. And, for those in Australia, keep in mind that pretty much everything is trying to kill you!
 
I post this in the radio forum - but substitute the item of your choice for "radio" and the message will get through.
 
Yes, I know today is *your* first day of Autumn....
 
WARNING: Very Graphic Images Attached!
 
All:
Now that there are actual flowers in bloom (Crocus, Forsythia &
Snowdrop), it is time for the annual post on stalking the wild radio... and what accidental passengers that may come along with it:
 
1. Insects and other arthropods: Anything from spiders to wasps to
fleas and more. Any radio that has spend substantial time in a barn,
basement, shed, garage or any other damp or exposed area may well be
inhabited by or infested with various small and potentially painful
critters. Especially those found in the southern states, home to the
Brown Recluse and Black Widow spiders. Wasps, centipedes (quite
poisonous as it happens) and other vermin are no fun as well. And, if
you do find some critter of this nature, KILL IT. Being soft hearted
and releasing it into _your_ environment may make you feel all warm
and fuzzy, but that creature may then cause considerable harm being
somewhere it does not belong and where it perhaps has no natural
predators. EDIT: Global Warming (whether you believe in it or not) has pushed the Recluse range into Maryland, with some few transported by human agency as far as Michigan and Pennsylvania. This is one NASTY spider with a very nasty bite.
 
http://www.tcnj.edu/~hofmann/humor/Misc/spider/Day10.jpg THIS is a Brown Recluse Bite.
 
https://ee_ce_img.s3.amazonaws.com/cache/ce_img/media/remote/ce_img/https_ee_channel_images.s3.amazonaws.com/article-figures/12582/article-g02_400_301.jpg THIS is a centipede bite(s).
 
2. Evidence of Rodent Inhabitation: Handle with GREAT care.
 
Hanta-Virus (a relative of Ebola) is endemic throughout the entire
United States, Mexico and parts of Canada. It is a disease without
effective treatment and an over 50% mortality rate worldwide (36% in
the US). It is carried in the feces and fresh urine of many
rodents...and there is limited recent evidence that reconstituted waste (dried but inhaled) will also spread the disease especially if inhaled, a
possibility not accepted in the recent past.
 
http://www.cdc.gov/hantavirus/images/case_maps/state-of-reporting-042114.jpg.jpg
 
Lyme Disease: Carried by deer ticks that winter over in the white-
footed deer mouse (an omnivore, BTW) that will winter over anywhere
it can find shelter. The ticks that mice carry will leave the mouse
to lay eggs... perhaps in that radio that served as their temporary
winter dorm and latrine.
 
http://pad1.whstatic.com/images/thumb/4/40/Recognize-Lyme-Disease-Symptoms-Step-1.jpg/670px-Recognize-Lyme-Disease-Symptoms-Step-1.jpg
 
Various other tick-borne diseases include Rocky Mountain Spotted
Fever, and a whole bunch more *very* nasty diseases not worth
risking, all endemic in the US.
 
3. Bird Dung & Old Nests: Per a recent (June, 2007) paper, there have
been over sixty (60) diseases that may be carried in wild bird poop
including Avian Flu, Fowl Typhoid, Infectious Coryza, Paratyphoid,
Salmonellosis, Schistosomiasis, strep and on-and-on. ((Those of you
servicing your Bluebird and other bird houses about now need also keep
this in mind.)) Most wild birds are carriers of these diseases and show
no visible symptoms. We bleach our birdhouses - THEN we clean them
out. Amazing the number of dead insects and other vermin we get out of
them every spring.
 
Asbestos: Dangerous only when friable - small particles able to become airborne easily. If you are a smoker, even more dangerous. A single (one (1)) fiber can cause a fatal reaction over time. For all that, it is fairly easily made safe with a little bit of care and caution. But even if you do not believe it is dangerous, you do not have the right to expose others, or transport it in conveyances where residual material may come in contact with others - that is, do not transport it openly in the family minivan.
 
http://images.radiopaedia.org/images/1827647/6b765cac7f64a5107b54df2e031e12.jpg
 
Bottom line: A proverbial ounce of caution beats the hell out of a
pound of care. Common sense, rubber gloves, a breathing mask, Lysol,
Bleach, Moth-balls, Insecticides (which often do not work on Spiders or Ticks, so read the label), and other elementary precautions conscientiously and carefully applied will "safen" even the nastiest of wild radios.
 
I did pick the ugliest pictures I could find. I can be thick at times, so they are chosen to get my attention at my thickest...
 
Peter Wieck
Melrose Park, PA
DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org>: Mar 20 10:37AM -0400

>> make good use of as you wish.
 
>> http://imgur.com/a/jPlow
 
>Brilliant! Thanks.
 
 
I wish I had made a video, but all there is are the pics, so one has
to be a bit intuitive and look at the file names as well. I also put
metadata info into the file, but imgur may not take the files as they
get uploaded and my create their own versions sans metadata.
 
I like when I can hover over one of my Excel spreadsheets/workbooks
with my mouse and a wealth of info (which I inserted) about the file and
what it does appears before ever opening the file. The idiots at MS did
get a few things right.
"pfjw@aol.com" <pfjw@aol.com>: Mar 20 08:09AM -0700

On Sunday, March 20, 2016 at 10:37:10 AM UTC-4, DecadentLinuxUserNumeroUno wrote:
> >> turned OFF! I did some net searching and found a forum where it was
> >> discovered that Fluke put a cheap Toshiba supercap in the meter with a
> >> less than 2 year lifespan and AT the same voltage by this behavior.
 
Just an FYI: Flukes generally carry a lifetime warranty - and this expedient would void that warranty. A more serious failure would then render the unit worthless and without resort to Fluke.
 
Just keep this in mind.
 
Peter Wieck
Melrose Park, PA
"Ian Field" <gangprobing.alien@ntlworld.com>: Mar 19 09:37PM

"Paul Drahn" <pdrahn@webformixair.com> wrote in message
news:nch8g2$7ch$1@dont-email.me...
 
>> Enjoy!
>> Tim
> Interesting, but missing most amateur radio magazines.
 
There's also electronicsandbooks, google can find it but the server is
frequently reluctant to communicate.
 
The only thing you can do is keep trying at different times of day.
Sometimes it comes alive about 7pm - but apparently not on Saturdays.
John Robertson <spam@flippers.com>: Mar 19 04:02PM -0700

On 03/18/2016 4:42 AM, Tim Schwartz wrote:
> from the UK as well.
 
> Enjoy!
> Tim
 
I love the radio ads from the 20s in Radio Doings and other magazines...
 
John :-#)#
 
--
(Please post followups or tech inquiries to the USENET newsgroup)
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
(604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."
"Bob F" <bobnospam@gmail.com>: Mar 19 01:14PM -0700

Jeff Wisnia wrote:
> people would stop dying. I might burn down the whole building with
> that heater and have some smart investigator tie it to my replacing
> the thermal fuse with a piece of wire.
 
I bought a bunch from Newegg for cheap.
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