Digest for sci.electronics.repair@googlegroups.com - 18 updates in 5 topics

Aardvarks <aardvarks@a.b.c.com>: Aug 05 04:51PM -0300

On Thu, 4 Aug 2016 20:13:16 -0400, Aardvarks wrote:
 
> Do you think this Firefox battery-status fingerprinting also works for
> laptops?
 
Some factual updates...
 
The battery-status API privacy exploit works on multiple browsers and on
multiple operating systems, including all the well known operating systems
for both mobile devices and computers.
 
Setting the following "about:config" option in Firefox should prevent the
exploit that Jeff kindly informed us about:
 
Change from: dom.battery.enabled;true
Change to: dom.battery.enabled;false
 
I'm not sure where the user.js file is located on iOS or in Android, but on
your computer desktops and laptops, it will be located in "about:profiles".
Jolly Roger <jollyroger@pobox.com>: Aug 06 12:25AM


> The battery-status API privacy exploit works on multiple browsers and on
> multiple operating systems, including all the well known operating systems
> for both mobile devices and computers.
 
Does the exploit work in Safari?
 
--
E-mail sent to this address may be devoured by my ravenous SPAM filter.
I often ignore posts from Google. Use a real news client instead.
 
JR
Aardvarks <aardvarks@a.b.c.com>: Aug 05 10:05PM -0300

On 6 Aug 2016 00:25:17 GMT, Jolly Roger wrote:
 
> Does the exploit work in Safari?
 
In a quick read of these references...
https://www.theguardian.com/technology/2015/aug/03/privacy-smartphones-battery-life
http://www.independent.co.uk/life-style/gadgets-and-tech/news/phone-batteries-can-be-used-to-spy-on-their-owners-could-track-people-around-the-internet-10435578.html
https://it.slashdot.org/story/15/08/03/1728255/privacy-alert-your-laptop-or-phone-battery-could-track-you-online
http://www.wired.co.uk/article/privacy-hole-in-firefox
http://www.ibtimes.co.uk/smartphone-laptop-batteries-compromise-web-browser-privacy-suggest-security-experts-1513979
http://mashable.com/2015/08/04/battery-privacy-html5/
http://www.telegraph.co.uk/technology/internet-security/11782851/Can-your-battery-life-give-away-your-identity.html
http://www.belfasttelegraph.co.uk/technology/mobile-phone-batteries-can-be-used-to-spy-on-their-owners-could-track-people-around-the-internet-31423953.html
http://www.theinquirer.net/inquirer/news/2420547/phone-batteries-can-track-you-around-the-internet
http://blogs.wsj.com/digits/2015/08/04/7-ways-youre-being-tracked-online-and-how-to-stop-it/
http://eprint.iacr.org/2015/616.pdf
http://betanews.com/2015/08/03/privacy-alert-your-laptop-or-phone-battery-could-track-you-online/
http://www.dailymail.co.uk/sciencetech/article-3185191/Are-tracked-using-smartphone-s-BATTERY-LIFE-Information-harvested-make-websites-energy-efficient-identify-web-users.html
http://www.repubblica.it/tecnologia/sicurezza/2015/08/05/news/privacy_batteria_telefono-120471082/
http://www.liberation.fr/direct/element/quand-le-niveau-de-batterie-de-votre-telephone-devient-un-mouchard_14537/
http://tecnologia.elpais.com/tecnologia/2015/08/04/actualidad/1438686007_043163.html
http://www.nzz.ch/nicht-nur-der-akku-verraet-nutzer-ld.1278
http://www.police.be/fed/fr/actualites/298-surfons-tranquille-api-battery-status-un-espion-insoupconne
etc. (the last few are not in English though)
 
It seems it's "a little-known feature of the HTML5 specification" which
Firefox, Opera and Chrome support and it was "introduced by the World Wide
Web Consortium (W3C, the organisation that oversees the development of the
web's standards) in 2012".
 
Here's a quote from the first article:
 
https://www.theguardian.com/technology/2015/aug/03/privacy-smartphones-battery-life
"The researchers point out that the information a website receives is
surprisingly specific, containing the estimated time in seconds that the
battery will take to fully discharge, as well the remaining battery
capacity expressed as a percentage. "
 
"Worse still, on some platforms, the researchers found that it is possible
to determine the maximum battery capacity of the device with enough
queries, creating a semi-permanent metric to compare devices".
Jolly Roger <jollyroger@pobox.com>: Aug 06 02:46AM

> On 6 Aug 2016 00:25:17 GMT, Jolly Roger wrote:
 
>> Does the exploit work in Safari?
 
> In a quick read of these references...
 
[seemingly endless list of URLs followed by zero substance omitted]
 
Is that a "yes" or a "no"? Because if Safari's WebKit is unaffected, that
means most of the entire iOS platform is unaffected - which leads one to
wonder: why are you posting this to misc.phone.mobile.iphone?...
#obvioustroll #lame
 
--
E-mail sent to this address may be devoured by my ravenous SPAM filter.
I often ignore posts from Google. Use a real news client instead.
 
JR
Aardvarks <aardvarks@a.b.c.com>: Aug 06 12:40AM -0300

On 6 Aug 2016 02:46:43 GMT, Jolly Roger wrote:
 
 
> Is that a "yes" or a "no"? Because if Safari's WebKit is unaffected, that
> means most of the entire iOS platform is unaffected - which leads one to
> wonder: why are you posting this to misc.phone.mobile.iphone?...
 
What?
Why do you troll so much?
 
Is this a safari-only newsgroup?
 
Or, are you really so stuck in the stone age that you actually think that
the primitive and restrictive Safari is the *only* browser on iOS?
 
Or, are you so limited in your choices of browsers, that you can't imagine
anyone using a modern browser that supports the latest HTML5 specification
(even though it is a few years old by now).
 
Sheesh.
 
You say "I" troll, but Jeff kindly brought this topic up, and he wasn't
trolling when he brought it up. I was simply responding to Jeff ... so, as
always, *you* are the troll accusing me of bringing this topic up when all
I did was flesh it out (every single time - the troll is *always* you!).
 
You add *zero* value.
And you accuse people who do add value of things that only you do!
 
It's funny, but you don't even *remember* how this was brought up - that's
how little you count to the discussion!
 
Anyway, despite your childish lack of usable memory and your constantly
annoying trolling behavior, my response to your specific Safari question is
that I don't know anything about the primitive Safari app since I wouldn't
be caught dead using such a restrictive browser.
 
Therefore, I don't know whether Safari supports the latest battery api in
the HTML5 specification or not - so it behooves you to figure out whether
Safari has been updated to support HTML5 components such as the battery
API.
 
Apple is so slow to update their apps that I'd guess being five years
behind everyone else is pretty normal for them - so you might actually be
safe with the primitive Safari app after all.
 
I mean, the most important thing in the world to you is for Apple to keep
you safe, isn't it? So, this time, Apple may have saved you from the modern
HTML5 specification. Sometimes, doing nothing to improve your apps works
out for the best.
 
In fact, knowing how primitive and restrictive Safari is, I'd take a guess
that Safari probably does not yet support this relatively recent (2012)
HTML5 component, since Safari is still stuck in the stone age, so, you're
probably safe this time due to the primitive nature of Apple products
(which would be a good thing in this case so I congratulate you on your
choice of browsers).
 
If my guess is right that Safari is still stuck in the stone age, then the
topic that Jeff brought up about the HTML5 specification Battery API is
still relevant to the more modern browsers that are available on iOS.
 
But, you're probably safe if you stick with Safari (which was probably
never updated to the latest HTML5 specification, knowing Apple).
Jolly Roger <jollyroger@pobox.com>: Aug 06 02:42PM

>> means most of the entire iOS platform is unaffected - which leads one to
>> wonder: why are you posting this to misc.phone.mobile.iphone?...
 
> Is this a safari-only newsgroup?
 
[more useless troll blather omitted]
 
So most of iOS is unaffected. Thanks for playing! : )
 
Troll on.
 
--
E-mail sent to this address may be devoured by my ravenous SPAM filter.
I often ignore posts from Google. Use a real news client instead.
 
JR
nospam <nospam@nospam.invalid>: Aug 06 10:54AM -0400

In article <e0mbbeFevmtU1@mid.individual.net>, Jolly Roger
 
> [more useless troll blather omitted]
 
> So most of iOS is unaffected. Thanks for playing! : )
 
> Troll on.
 
it's amazing how much useless nonsensical spew he can generate without
ever finding the very 'facts' he claims to seek.
 
<http://caniuse.com/#feat=battery-status>
Jolly Roger <jollyroger@pobox.com>: Aug 06 03:14PM


> it's amazing how much useless nonsensical spew he can generate without
> ever finding the very 'facts' he claims to seek.
 
><http://caniuse.com/#feat=battery-status>
 
It's what he does best. And as usual, he falls flat on his face when
confronted with reality. He's a piss poor old troll.
 
--
E-mail sent to this address may be devoured by my ravenous SPAM filter.
I often ignore posts from Google. Use a real news client instead.
 
JR
"Danny D." <dannydiamico@yahoo.com>: Aug 05 10:54PM -0300

On Wed, 13 Jul 2016 07:52:43 -0400, Stormin Mormon wrote:
 
> Christopher A. Young
> learn more about Jesus
> . www.lds.org
 
To update this thread, I replaced the Kenmore with a Whirlpool long ago.
http://i.cubeupload.com/3yXHsM.jpg
 
When I opened the back of the Whirlpool, I was surprised to find a Kenmore
build sheet inside. Everything is almost exactly the same in the Whirlpool
as it was in the Kenmore, even down to the capacitor and relay.
 
Even the shelves and wire racks were the same.
 
So Whirlpool *is* Kenmore and Kenmore is Whirlpool.
 
The current in the Whirlpool was lower than the Kenmore though, at about
1.2 amps when the compressor was running (it was about 3 amps, as I recall,
with the older fridge).
http://i.cubeupload.com/Wgo5LG.jpg
 
The new Whirlpool uses what appears to be a similar Embraco compressor
which uses R134a but with a much lower LRA of 11.7 amps (as opposed to the
17 point something locked rotor amperage of the older Kenmore fridge).
http://i.cubeupload.com/vn8fws.jpg
 
I've already had a service call, because the Whirlpool fridge is *supposed*
to keep to between 37 and 40 degrees F with the freezer between 10 and 0
degrees F, but the thing is about 5 to 10 degrees F too warm when both
settings are in the minimum position.
http://i.cubeupload.com/3UkX69.jpg
 
Funny thing, when you put the *freezer* at the minimum setting, the
*fridge* gets more air through the vent at top left (in this side-by-side
refrigerator/freezer combination). That's because lowering the temperature
in the freezer simply makes the vent open more of the fan air to the
refrigerator.
http://i.cubeupload.com/3yXHsM.jpg
 
It's confusing, and it's counterintuitive that when you set the freezer to
colder, the refrigerator gets *less* air, hence it's warmer. I don't know
what changes when you set the refrigerator colder though.
 
This is all I think I know:
1. The compressor only runs at one speed.
2. Therefore the compressor is either on, or it's off.
3. There is a condenser fan on the bottom of the refrigerator.
4. That condenser fan also only has one speed.
5. There is a fan in the back of the freezer about mid way up.
6. That fan also has only one speed.
7. There is no fan in the refrigerator.
8. The refrigerator has no coils and has no fans.
9. The evaporator coils are only in the back of the freezer.
10. So the freezer is what cools the refrigerator.
11. That's why lowering the freezer temperature raises the refrig
temperature (according to the service guy anyway).
12. The freezer dial apparently only controls the louvers of the air that
is blow by the freezer fan from the freezer to the refrigerator.
13. I have no idea what the refrigerator dial does.
"Danny D." <dannydiamico@yahoo.com>: Aug 05 10:54PM -0300

On Sat, 9 Jul 2016 12:44:01 -0400, Stormin Mormon wrote:
 
> Christopher A. Young
> learn more about Jesus
> . www.lds.org
 
To update this thread, I replaced the Kenmore with a Whirlpool long ago.
http://i.cubeupload.com/3yXHsM.jpg
 
When I opened the back of the Whirlpool, I was surprised to find a Kenmore
build sheet inside. Everything is almost exactly the same in the Whirlpool
as it was in the Kenmore, even down to the capacitor and relay.
 
Even the shelves and wire racks were the same.
 
So Whirlpool *is* Kenmore and Kenmore is Whirlpool.
 
The current in the Whirlpool was lower than the Kenmore though, at about
1.2 amps when the compressor was running (it was about 3 amps, as I recall,
with the older fridge).
http://i.cubeupload.com/Wgo5LG.jpg
 
The new Whirlpool uses what appears to be a similar Embraco compressor
which uses R134a but with a much lower LRA of 11.7 amps (as opposed to the
17 point something locked rotor amperage of the older Kenmore fridge).
http://i.cubeupload.com/vn8fws.jpg
 
I've already had a service call, because the Whirlpool fridge is *supposed*
to keep to between 37 and 40 degrees F with the freezer between 10 and 0
degrees F, but the thing is about 5 to 10 degrees F too warm when both
settings are in the minimum position.
http://i.cubeupload.com/3UkX69.jpg
 
Funny thing, when you put the *freezer* at the minimum setting, the
*fridge* gets more air through the vent at top left (in this side-by-side
refrigerator/freezer combination). That's because lowering the temperature
in the freezer simply makes the vent open more of the fan air to the
refrigerator.
http://i.cubeupload.com/3yXHsM.jpg
 
It's confusing, and it's counterintuitive that when you set the freezer to
colder, the refrigerator gets *less* air, hence it's warmer. I don't know
what changes when you set the refrigerator colder though.
 
This is all I think I know:
1. The compressor only runs at one speed.
2. Therefore the compressor is either on, or it's off.
3. There is a condenser fan on the bottom of the refrigerator.
4. That condenser fan also only has one speed.
5. There is a fan in the back of the freezer about mid way up.
6. That fan also has only one speed.
7. There is no fan in the refrigerator.
8. The refrigerator has no coils and has no fans.
9. The evaporator coils are only in the back of the freezer.
10. So the freezer is what cools the refrigerator.
11. That's why lowering the freezer temperature raises the refrig
temperature (according to the service guy anyway).
12. The freezer dial apparently only controls the louvers of the air that
is blow by the freezer fan from the freezer to the refrigerator.
13. I have no idea what the refrigerator dial does.
"Danny D." <dannydiamico@yahoo.com>: Aug 05 10:55PM -0300

On Fri, 8 Jul 2016 23:22:01 -0000 (UTC), Danny D. wrote:
 
> to the touch - but the coils are not.
 
> I think the solenoid at the compressor "bulb" is what is making the noise.
> Any debugging advice?
 
To update this thread, I replaced the Kenmore with a Whirlpool long ago.
http://i.cubeupload.com/3yXHsM.jpg
 
When I opened the back of the Whirlpool, I was surprised to find a Kenmore
build sheet inside. Everything is almost exactly the same in the Whirlpool
as it was in the Kenmore, even down to the capacitor and relay.
 
Even the shelves and wire racks were the same.
 
So Whirlpool *is* Kenmore and Kenmore is Whirlpool.
 
The current in the Whirlpool was lower than the Kenmore though, at about
1.2 amps when the compressor was running (it was about 3 amps, as I recall,
with the older fridge).
http://i.cubeupload.com/Wgo5LG.jpg
 
The new Whirlpool uses what appears to be a similar Embraco compressor
which uses R134a but with a much lower LRA of 11.7 amps (as opposed to the
17 point something locked rotor amperage of the older Kenmore fridge).
http://i.cubeupload.com/vn8fws.jpg
 
I've already had a service call, because the Whirlpool fridge is *supposed*
to keep to between 37 and 40 degrees F with the freezer between 10 and 0
degrees F, but the thing is about 5 to 10 degrees F too warm when both
settings are in the minimum position.
http://i.cubeupload.com/3UkX69.jpg
 
Funny thing, when you put the *freezer* at the minimum setting, the
*fridge* gets more air through the vent at top left (in this side-by-side
refrigerator/freezer combination). That's because lowering the temperature
in the freezer simply makes the vent open more of the fan air to the
refrigerator.
http://i.cubeupload.com/3yXHsM.jpg
 
It's confusing, and it's counterintuitive that when you set the freezer to
colder, the refrigerator gets *less* air, hence it's warmer. I don't know
what changes when you set the refrigerator colder though.
 
This is all I think I know:
1. The compressor only runs at one speed.
2. Therefore the compressor is either on, or it's off.
3. There is a condenser fan on the bottom of the refrigerator.
4. That condenser fan also only has one speed.
5. There is a fan in the back of the freezer about mid way up.
6. That fan also has only one speed.
7. There is no fan in the refrigerator.
8. The refrigerator has no coils and has no fans.
9. The evaporator coils are only in the back of the freezer.
10. So the freezer is what cools the refrigerator.
11. That's why lowering the freezer temperature raises the refrig
temperature (according to the service guy anyway).
12. The freezer dial apparently only controls the louvers of the air that
is blow by the freezer fan from the freezer to the refrigerator.
13. I have no idea what the refrigerator dial does.
Ed Pawlowski <esp@snet.net>: Aug 05 10:18PM -0400

On 8/5/2016 9:54 PM, Danny D. wrote:
 
> as it was in the Kenmore, even down to the capacitor and relay.
 
> Even the shelves and wire racks were the same.
 
> So Whirlpool *is* Kenmore and Kenmore is Whirlpool.
 
Don't bet money on that. Kenmore can also be Electrolux (formerly
Frigidaire) LG, Samsung, and just about any other appliance manufacturer.
http://www.appliance411.com/purchase/sears.shtml
Ed Pawlowski <esp@snet.net>: Aug 05 10:34PM -0400

On 8/5/2016 9:54 PM, Danny D. wrote:
 
 
 
> 10. So the freezer is what cools the refrigerator.
> 11. That's why lowering the freezer temperature raises the refrig
> temperature (according to the service guy anyway).
 
Short term I can see that, especially if just loaded up or in very ho
weather. The temperatures should be able to balance where you want
them, though it may take 24 hours or so.
 
The compressor has a limited capacity so if you extract more heat from
the freezer, it will take less from the refrigerator section. One the
freezer is at the desired temperature the fridge section should be able
to catch up.
 
Many new units have dual systems. My Samsung keep each setting,
freezer, refrigerator, center drawer at the exact set temperature.
Mike Jones <mikejones@gmail.com>: Aug 05 09:30PM -0500

On the inside of the refrig in the freezer compartment
there will be a panel that can be removed. Once
removed, you will see the evaporator coils. If they
are caked with ice, that is the problem. They are
supposed to be ice-free, where the accumulated
frost is melted during the defrost cycle.
If the coils are solid with ice, the system can
no longer cool. There are three possible
problems, listed here in order of likelihood:
 
1 Defrost thermostat has failed. This is a
ten dollar part you can replace yourself
easily.
 
2 Defrost heater has failed. This part is
around $15-20 on the internet, plus shipping.
It is easy to replace.
 
3 Defrost timer has failed. This is more
complicated and depends a LOT on the design
of the refrigerator.
 
You can learn all about this by going to
google with the following search string :
 
Kenmore refrigerator doesn't cool.
 
There will be links there describing possible
solutions, videos showing how to do the repair,
and sources for buying the parts......
 
It ain't rocket surgery, but it does take
a bit of self-education......
hellmelt@gmail.com: Aug 05 02:02PM -0700

My mower now works again! I had to change the board in the charging station.
 
/Ander
 
JW <none@dev.null>: Aug 05 02:48PM -0400

http://www.eevblog.com/forum/chat/mj15025-transistors-wrong-polarity!!!!!!!!!!/
 
You can guess from where...
jurb6006@gmail.com: Aug 05 12:40PM -0700

On Friday, August 5, 2016 at 1:48:36 PM UTC-5, JW wrote:
> http://www.eevblog.com/forum/chat/mj15025-transistors-wrong-polarity!!!!!!!!!!/
 
> You can guess from where...
 
I buy things like that from Digikey.
"Ian Field" <gangprobing.alien@ntlworld.com>: Aug 05 06:12PM +0100

<jurb6006@gmail.com> wrote in message
news:5da98753-3906-41a8-9433-42cad6a99d16@googlegroups.com...
>>"Put a diode in series with the battery lead. "
 
> Can't do that because then it won't charge. Maybe with two, one in each
> direction but then it'll probably never fully charge.
 
Its amazing how something as simple as using a diode as a gate confuses some
people.
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