sci.electronics.repair@googlegroups.com

Today's topics:

* Notebook freezing when connected to external power supply - 7 messages, 4
authors
http://groups.google.com/group/sci.electronics.repair/t/5ce5b775904c6f5d?hl=en
* Detectron Geiger Counter - 10 messages, 5 authors
http://groups.google.com/group/sci.electronics.repair/t/172aa0a4a231f69a?hl=en
* Picture tube degaussing - 2 messages, 2 authors
http://groups.google.com/group/sci.electronics.repair/t/a6f0cc34cbf52c0b?hl=en
* wholesale nike dunk sb shoes (www.sourcesoso.com ) - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/506561bd2e2e77db?hl=en
* wholesale Burberry shirt (paypal payment) - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/4b5cefc2624fe49e?hl=en
* cheap wholesale, ED hardy ,hat (paypal payment) - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/28df11e5415d944b?hl=en
* RoHS/PbF for customers - 3 messages, 3 authors
http://groups.google.com/group/sci.electronics.repair/t/be6b5e1bdd1355e9?hl=en

==============================================================================
TOPIC: Notebook freezing when connected to external power supply
http://groups.google.com/group/sci.electronics.repair/t/5ce5b775904c6f5d?hl=en
==============================================================================

== 1 of 7 ==
Date: Sat, Apr 24 2010 10:33 pm
From: Mike De Petris

On Apr 25, 5:05 am, "hr(bob) hofm...@att.net" <hrhofm...@att.net>
wrote:
> On Apr 24, 4:46 pm, "William Sommerwerck" <grizzledgee...@comcast.net>
> wrote:
>
> > You said that this problem didn't occur with certain software -- only BIOS
> > and W7. Which suggests a software problem.
>
> > Toshiba notebooks have not generally have this problem. You could push and
> > pull the AC adapter's plug all day long, and the computer didn't mind.
>
> > I suspect the software interprets the tiny "glitch" when the plug is
> > inserted (or removed) as a power loss, or a command to switch to
> > Sleep/Standby.
>
> Does the hard drive light come on solid when it freezes, indicating it
> is in some sort of loop, or does it go out, or does it flash
> intermittently indicating it is not locked up?

it stays turned off, after lock up I see glowing these LED:
- power on
- power connected
- battery charging (if battery present)

== 2 of 7 ==
Date: Sun, Apr 25 2010 8:13 am
From: Meat Plow

On Sun, 25 Apr 2010 04:42:58 -0400, Jamie
<jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net>wrote:

> some Laptops have a partition on the HD that has special set up
>software at boot time to configure the proprietary onboard chips..
> This also could be an issue..

What laptop(s) would have this feature?

== 3 of 7 ==
Date: Sun, Apr 25 2010 12:57 pm
From: Jeffrey D Angus

Meat Plow wrote:
> On Sun, 25 Apr 2010 04:42:58 -0400, Jamie
> <jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net>wrote:
>
>> some Laptops have a partition on the HD that has special set up
>> software at boot time to configure the proprietary onboard chips..
>> This also could be an issue..
>
> What laptop(s) would have this feature?

Compaq, they were nortorious for having a special partition they would
fail to boot if they didn't find.

Jeff

--
"Egotism is the anesthetic that dulls the pain of stupidity."
Frank Leahy, Head coach, Notre Dame 1941-1954

http://www.stay-connect.com

== 4 of 7 ==
Date: Sun, Apr 25 2010 1:24 pm
From: Meat Plow

On Sun, 25 Apr 2010 14:57:49 -0500, Jeffrey D Angus
<jangus@suddenlink.net>wrote:

>Meat Plow wrote:
>> On Sun, 25 Apr 2010 04:42:58 -0400, Jamie
>> <jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net>wrote:
>>
>>> some Laptops have a partition on the HD that has special set up
>>> software at boot time to configure the proprietary onboard chips..
>>> This also could be an issue..
>>
>> What laptop(s) would have this feature?
>
>Compaq, they were nortorious for having a special partition they would
>fail to boot if they didn't find.

I've never owned a Compaq laptop but working in the industry when
Compaq was the workstation of choice I would have thought I'd read
about it somewhere. This must have been really proprietary as I've
never heard of a chipset needing to load code from a fixed drive
during boot. Can you give me an example of a model number and year
and what operating system? Not that I don't believe you I'm just a bit
taken back that onboard chips could be so proprietary that they
couldn't be produced with their own non-volitile embedded instruction
sets.

== 5 of 7 ==
Date: Sun, Apr 25 2010 1:42 pm
From: Jeffrey D Angus

Meat Plow wrote:
> On Sun, 25 Apr 2010 14:57:49 -0500, Jeffrey D Angus
> <jangus@suddenlink.net>wrote:
>
>> Meat Plow wrote:
>>> On Sun, 25 Apr 2010 04:42:58 -0400, Jamie
>>> <jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net>wrote:
>>>
>>>> some Laptops have a partition on the HD that has special set up
>>>> software at boot time to configure the proprietary onboard chips..
>>>> This also could be an issue..
>>> What laptop(s) would have this feature?
>> Compaq, they were nortorious for having a special partition they would
>> fail to boot if they didn't find.
>
> I've never owned a Compaq laptop but working in the industry when
> Compaq was the workstation of choice I would have thought I'd read
> about it somewhere. This must have been really proprietary as I've
> never heard of a chipset needing to load code from a fixed drive
> during boot. Can you give me an example of a model number and year
> and what operating system? Not that I don't believe you I'm just a bit
> taken back that onboard chips could be so proprietary that they
> couldn't be produced with their own non-volitile embedded instruction
> sets.
>

The Compaq Presario series comes to mind. They had a special 1-2 meg
partition on the hard drive that the bios looked for and not finding,
would hang the system. "OS NOT FOUND"

I found out the hard way, loading SCO Unix on one, going through the
entire ordeal of loading the operating system (and mistaking wiping
the service partition, then rebooting and finding I had to (a) replace
the service partition and reload the service software and (b) start
from scratch again with SCO Unix install.

Jeff

--
"Egotism is the anesthetic that dulls the pain of stupidity."
Frank Leahy, Head coach, Notre Dame 1941-1954

http://www.stay-connect.com

== 6 of 7 ==
Date: Sun, Apr 25 2010 2:06 pm
From: Baron

Jeffrey D Angus Inscribed thus:

> Meat Plow wrote:
>> On Sun, 25 Apr 2010 14:57:49 -0500, Jeffrey D Angus
>> <jangus@suddenlink.net>wrote:
>>
>>> Meat Plow wrote:
>>>> On Sun, 25 Apr 2010 04:42:58 -0400, Jamie
>>>> <jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net>wrote:
>>>>
>>>>> some Laptops have a partition on the HD that has special set
>>>>> up
>>>>> software at boot time to configure the proprietary onboard chips..
>>>>> This also could be an issue..
>>>> What laptop(s) would have this feature?
>>> Compaq, they were nortorious for having a special partition they
>>> would fail to boot if they didn't find.
>>
>> I've never owned a Compaq laptop but working in the industry when
>> Compaq was the workstation of choice I would have thought I'd read
>> about it somewhere. This must have been really proprietary as I've
>> never heard of a chipset needing to load code from a fixed drive
>> during boot. Can you give me an example of a model number and year
>> and what operating system? Not that I don't believe you I'm just a
>> bit taken back that onboard chips could be so proprietary that they
>> couldn't be produced with their own non-volitile embedded instruction
>> sets.
>>
>
> The Compaq Presario series comes to mind. They had a special 1-2 meg
> partition on the hard drive that the bios looked for and not finding,
> would hang the system. "OS NOT FOUND"
>
> I found out the hard way, loading SCO Unix on one, going through the
> entire ordeal of loading the operating system (and mistaking wiping
> the service partition, then rebooting and finding I had to (a) replace
> the service partition and reload the service software and (b) start
> from scratch again with SCO Unix install.
>
> Jeff
>

I remember those ! Caused all sorts of mayhem. If I recall the trick
was to wipe the MBR and sys the drive from a floppy boot disk.

--
Best Regards:
Baron.

== 7 of 7 ==
Date: Sun, Apr 25 2010 4:42 pm
From: Meat Plow

On Sun, 25 Apr 2010 15:42:49 -0500, Jeffrey D Angus
<jangus@suddenlink.net>wrote:

>Meat Plow wrote:
>> On Sun, 25 Apr 2010 14:57:49 -0500, Jeffrey D Angus
>> <jangus@suddenlink.net>wrote:
>>
>>> Meat Plow wrote:
>>>> On Sun, 25 Apr 2010 04:42:58 -0400, Jamie
>>>> <jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net>wrote:
>>>>
>>>>> some Laptops have a partition on the HD that has special set up
>>>>> software at boot time to configure the proprietary onboard chips..
>>>>> This also could be an issue..
>>>> What laptop(s) would have this feature?
>>> Compaq, they were nortorious for having a special partition they would
>>> fail to boot if they didn't find.
>>
>> I've never owned a Compaq laptop but working in the industry when
>> Compaq was the workstation of choice I would have thought I'd read
>> about it somewhere. This must have been really proprietary as I've
>> never heard of a chipset needing to load code from a fixed drive
>> during boot. Can you give me an example of a model number and year
>> and what operating system? Not that I don't believe you I'm just a bit
>> taken back that onboard chips could be so proprietary that they
>> couldn't be produced with their own non-volitile embedded instruction
>> sets.
>>
>
>The Compaq Presario series comes to mind. They had a special 1-2 meg
>partition on the hard drive that the bios looked for and not finding,
>would hang the system. "OS NOT FOUND"
>
>I found out the hard way, loading SCO Unix on one, going through the
>entire ordeal of loading the operating system (and mistaking wiping
>the service partition, then rebooting and finding I had to (a) replace
>the service partition and reload the service software and (b) start
>from scratch again with SCO Unix install.

Wel that's really odd. OS not found usually means the BIOS can't find
the MBR or the bootloader can't find the partition, the directory of
executables including the OS kernel as described in the boot.ini file
of a Windows OS. I'll have to do some research and find out just what
chips are uploaded code from this 'service' partition just to satisfy
my curiosity.

==============================================================================
TOPIC: Detectron Geiger Counter
http://groups.google.com/group/sci.electronics.repair/t/172aa0a4a231f69a?hl=en
==============================================================================

== 1 of 10 ==
Date: Sun, Apr 25 2010 12:53 am
From: Ian Jackson

In message <7f86t556ufr4kvg5kr9fsv8tk5gavleadd@4ax.com>, Jeff Liebermann
<jeffl@cruzio.com> writes
>On Sat, 24 Apr 2010 09:02:32 +0100, "N_Cook" <diverse@tcp.co.uk>
>wrote:
>
>>Does USA "kludge" = UK "bodge" ?
>
>I think so. Also sometimes spelled kluge.
><http://en.wikipedia.org/wiki/Kludge>
>
Be aware that, while "bodge" and "botch" tend to get used
interchangeably, "bodging" and "botching" are not the same thing.

A "bodger" is a skilled, itinerant wood worker.
http://en.wikipedia.org/wiki/Bodging

A "botcher" is someone who fakes doing a proper job of something.

If a kludge provides a functionally adequate (but inelegant) solution,
I'm not sure whether it is really a bodge or a botch.
--
Ian

== 2 of 10 ==
Date: Sun, Apr 25 2010 7:58 am
From: "Chris F."

At this point, I think you're right - it's probably issue with the B+
supply, probably a combination of poor filtering and inadequate output
current. After tracing out the schematic that's about the only conclusion I
can come to. I'm going to take a break from this for a while, and then try
building a better power supply, and I will post back with the results.
There was something of interest in those links you posted; one specified a
15-volt C battery (for the tube bias) - I was only using about 4.5V. Don't
know if that would have much effect on things, but it's worth a try.
Thanks for the advice.

"Jeff Liebermann" <jeffl@cruzio.com> wrote in message
news:6a37t5hbf22hf1dum9vs77e80hc8p80a33@4ax.com...
> On Sat, 24 Apr 2010 10:45:48 -0700, "Chris F." <zappyman@hotmail.com>
> wrote:
>
>>> Did you figure out where the yellow electrolytic in the photo was
>>> connected? Power supply filter or meter integrator?
>>
>>It's connected across the meter.
>
> Ok, ignore it. I was hopeing for power supply.
>
>>> Find an oscilloscope that can tolerate some high voltage (i.e. 100x
>>> probe). Look at the power supply line. Got pulses? If so, get rid
>>> of them with a filter cap.
>>
>>Already tried that.... or are you talking about the AC line feeding my
>>transformer/rectifier/cap power supply?
>
> No. I meant high voltage battery positive lead. If there's
> motorboating there, then the power supply may need to be filtered.
>
> If that shows nothing useful, follow the signal path from the GM tube
> (after the coupling capacitor so that you're not looking at 900VDC) to
> the first grid, to that tube's plate, to the next grid, and so on. You
> should be able to see the motorboating.
>
>>I might do that. Can't think of anything else it might be, as it's really
>>a
>>rather basic circuit.
>
> Then, trace it out. From the photo, it looks simple enough.
>
>>BTW that small tube with the 2 leads I mentioned is a
>>5841 (voltage regulator), and I don't have a sub for it.
>
> It's a 900VDC regulator. Same as Victoreen GV3A-900.
> <http://www.logwell.com/tech/app_notes/VictoreenCatalog.pdf>
> See if there's any oscillations cross the tube with a high-voltage
> probe. It could be acting as a relaxation oscillator (as in a
> neon-lamp oscillator). Solid state replacement:
> <http://www.logwell.com/products/Codatron_Corotron.html>
>
> More for the collection (but nothing useful):
> <http://www.orau.org/ptp/collection/surveymeters/Detectrondg7.htm>
> <http://www.nukeworker.com/pictures/displayimage-442-47.html>
> <http://www.orau.org/ptp/collection/surveymeters/Detectrondg2.htm>
> <http://www.dvq.com/geiger/detdg7.jpg>
> <http://www.vex.net/~flint/geigerboy/page3.htm>
>
> Here's an eBay listing that has expired.
> <http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=270535217184>
>
> --
> Jeff Liebermann jeffl@cruzio.com
> 150 Felker St #D http://www.LearnByDestroying.com
> Santa Cruz CA 95060 http://802.11junk.com
> Skype: JeffLiebermann AE6KS 831-336-2558

== 3 of 10 ==
Date: Sun, Apr 25 2010 8:14 am
From: Jeff Liebermann

On Sun, 25 Apr 2010 08:53:38 +0100, Ian Jackson
<ianREMOVETHISjackson@g3ohx.demon.co.uk> wrote:

>In message <7f86t556ufr4kvg5kr9fsv8tk5gavleadd@4ax.com>, Jeff Liebermann
><jeffl@cruzio.com> writes
>>On Sat, 24 Apr 2010 09:02:32 +0100, "N_Cook" <diverse@tcp.co.uk>
>>wrote:
>>
>>>Does USA "kludge" = UK "bodge" ?
>>
>>I think so. Also sometimes spelled kluge.
>><http://en.wikipedia.org/wiki/Kludge>

>Be aware that, while "bodge" and "botch" tend to get used
>interchangeably, "bodging" and "botching" are not the same thing.
>
>A "bodger" is a skilled, itinerant wood worker.
>http://en.wikipedia.org/wiki/Bodging
>
>A "botcher" is someone who fakes doing a proper job of something.
>
>If a kludge provides a functionally adequate (but inelegant) solution,
>I'm not sure whether it is really a bodge or a botch.

Ok, I'm lost in the translation. However, it's good to know that the
Kings English has multiple names for what I do naturally when
confronted with a technical problem. Such multiple names are a sign
of sophistication and tends to identify what a society considers
important. For example, the Eskimo's have multiple names for
different types of snow. In Yiddish, we have multiple names for the
different types of "idiot". In government, there are multiple names
for the different types of taxation.

I'm sure something profound can be extracted from all this, but I
don't want to ruin a nice weekend by attempting to think.

--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

== 4 of 10 ==
Date: Sun, Apr 25 2010 9:17 am
From: Baron

Chris F. Inscribed thus:

> At this point, I think you're right - it's probably issue with the B+
> supply, probably a combination of poor filtering and inadequate output
> current. After tracing out the schematic that's about the only
> conclusion I can come to.

Since you get clicks when the tube is not connected, have you checked
the EHT supply. It probably has bad caps in there. Something breaking
down as the EHT rises.

--
Best Regards:
Baron.

== 5 of 10 ==
Date: Sun, Apr 25 2010 9:28 am
From: Baron

Jeff Liebermann Inscribed thus:

> On Fri, 23 Apr 2010 16:00:06 +0100, "N_Cook" <diverse@tcp.co.uk>
> wrote:
>
>>Now there is no thorium loaded gas mantles around these days
>
> Ummm... check out the gas and kerosene mantles from China. Some are
> hot:
>
<http://www.tradevv.com/chinasuppliers/yansong_p_4e599/china-Gas-mantle.html>
> Incidentally, I once sacrificed one of my radioactive thorium Coleman
> lantern mantles and ran a side by side comparison of the brightness
> with a current non-radioactive zirconium mantle. The radioactive
> mantle was MUCH brighter.
>
>>nor radium
>>dials , what is commonly around to give an above background check that
>>they are working ?
>
> I like to use KCL (potassium salt, lite salt, or low-sodium salt). The
> Potassium 40 is radioactive (450pCi/gram):
> <http://802.11junk.com/jeffl/crud/salt.jpg>
> <http://www.angelfire.com/electronic/cwillis/rad/nosalt.html>
> It's not very hot but works well enough with a GM tube. Also lots of
> fun going to the market with my 1950's GM counter. I once found some
> brand of sea salt that was really hot, but it had been withdrawn or
> recalled before I could return to buy some.
>
> While at the market, try brazil nuts, acorns, and bananas. K-40 but
> only when grown with massive overkill doses of fertilizer. Also try
> cat litter. They all show up hot with my scintillation counter, but
> are very weak with the GM tube.
>
> If you go to the hardware store, check out the high phosphate
> fertilizer. The stuff has uranium, K-40, thorium, radium, and who
> know what else in it.
>
> While at the hardware store, see if they have any tungsten stick arc
> electrodes. They have some Thorium mixed in.
>
> At home, if you have a dark colored granite counter top, you'll find
> it somewhat radioactive from uranium.
>
<http://greenbuildingelements.com/2009/03/27/granite-showrooms-continue-selling-radioactive-granite/>
> The problem isn't so much the radiation. It's the radon gas that it
> produces.
>
> Got any pottery or kitchen plates with a yellow or bright orange glaze
> (Fiestaware)? If so, they're uranium oxide.
>
> Got any old cameras or eyeglasses made between WWII and about 1980?
> Most lenses have thorium mixed into the glass to increase the index of
> refraction. These are really weak and will only show up on my
> scintillation counter.
>
> Got a heavy scotch tape dispenser with a sand-epoxy mix in the base?
> The sand has thorium mixed in.
>
> Got an old static eliminator for removing the static electricity from
> old vinyl records? If so, it's quite hot with Polonium.
>
> More:
> <http://www.kronjaeger.com/hv-old/radio/src/index.html>
> <http://www.anythingradioactive.com/radsamples.htm>
> <http://www.physics.isu.edu/radinf/natural.htm> See section on food.

Hey Jeff,
I've several old valves (Tubes) that are marked as containing "Radio
Active Material" with a "Do not Break Glass" and a yellow sticker on
them. CV number marking. Any ideas ?
They are stored in a box somewhere. If I can find them I'll come back
with the CV numbers.

--
Best Regards:
Baron.

== 6 of 10 ==
Date: Sun, Apr 25 2010 10:39 am
From: "Chris F."

Actually, the way this circuit is designed, any ripple or pulses in the DC
supply will be picked up and amplified the same way as pulses from the GM
tube. I guess it was never designed to operate on an AC power supply, but
I'm sure there's some way areound the problem.
I've replaced most of the capacitors (all are high voltage ceramics).

"Baron" <baron.nospam@linuxmaniac.nospam.net> wrote in message
news:hr1pta$uog$1@news.eternal-september.org...
> Chris F. Inscribed thus:
>
>> At this point, I think you're right - it's probably issue with the B+
>> supply, probably a combination of poor filtering and inadequate output
>> current. After tracing out the schematic that's about the only
>> conclusion I can come to.
>
> Since you get clicks when the tube is not connected, have you checked
> the EHT supply. It probably has bad caps in there. Something breaking
> down as the EHT rises.
>
> --
> Best Regards:
> Baron.
>

== 7 of 10 ==
Date: Sun, Apr 25 2010 10:43 am
From: "Chris F."

> Hey Jeff,
> I've several old valves (Tubes) that are marked as containing "Radio
> Active Material" with a "Do not Break Glass" and a yellow sticker on
> them. CV number marking. Any ideas ?
> They are stored in a box somewhere. If I can find them I'll come back
> with the CV numbers.
>
> --
> Best Regards:
> Baron.

Probably cold-cathode rectifier tubes, equivalent to types like 0A2, 0D3,
etc. I have at least one American-made 0A2 that has a radioactive symbol on
the box, and the tube itself says "Contains less than 0.03 microcuries of
Krypton".

== 8 of 10 ==
Date: Sun, Apr 25 2010 11:17 am
From: Baron

Chris F. Inscribed thus:

> Actually, the way this circuit is designed, any ripple or pulses in
> the DC supply will be picked up and amplified the same way as pulses
> from the GM tube. I guess it was never designed to operate on an AC
> power supply, but I'm sure there's some way areound the problem.
> I've replaced most of the capacitors (all are high voltage ceramics).

Sods Law ! It will be the one that you didn't replace. :-)

--
Best Regards:
Baron.

== 9 of 10 ==
Date: Sun, Apr 25 2010 12:23 pm
From: "tm"

Did you read the information in this link? Scroll down to the
discussion on the regulator tube.

http://www.dvq.com/geiger/heath_rc1.pdf

The 900 volt regulator tube operates in three regions; corona,
glow, and arc. It is sensitive to the high voltage supply conditions,
i.e. ripple can cause it to oscillate between the modes. Also, it is
sensitive to the filter capacitance.

== 10 of 10 ==
Date: Sun, Apr 25 2010 2:13 pm
From: Jeff Liebermann

On Sun, 25 Apr 2010 17:28:31 +0100, Baron
<baron.nospam@linuxmaniac.nospam.net> wrote:

>Hey Jeff,

You rang?

>I've several old valves (Tubes) that are marked as containing "Radio
>Active Material" with a "Do not Break Glass" and a yellow sticker on
>them. CV number marking. Any ideas ?

Tubes are what you roll the toilet paper upon. Valves are what
controls the flushing. What more do you need to know?

>They are stored in a box somewhere. If I can find them I'll come back
>with the CV numbers.

My guess(tm) is a gas filled thyratron or regulator
tube/valve/whatever, where the gas is slightly radioactive to decrease
the ionization voltage. The cathodes were also made with thorium:
<http://www.angelfire.com/electronic/cwillis/rad/tubes.html>
<http://www.tubecollector.org/documents/radioactive.htm>
The 5841 voltage regulator is one of those that is filled with some
radioactive gas. The differences between the various versions, which
breakdown at different voltages, is the amount and type of radioactive
gas or material.

--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

==============================================================================
TOPIC: Picture tube degaussing
http://groups.google.com/group/sci.electronics.repair/t/a6f0cc34cbf52c0b?hl=en
==============================================================================

== 1 of 2 ==
Date: Sun, Apr 25 2010 8:15 am
From: Meat Plow

On Sun, 25 Apr 2010 12:41:11 +1000, "Phil Allison"
<phil_a@tpg.com.au>wrote:

>
>"Ron Weston"
>
>
>> I'm afraid the degaussing circuit in the TV is not working.
>
>** Now he tells us ......
>
>Did he never guess that the failure of the degaussing circuit CAUSED the
>green patches to appear ??
>

I wonder how someone who would ask these question about degaussing
determine the internal degauss wasn't working?

== 2 of 2 ==
Date: Sun, Apr 25 2010 9:52 am
From: stratus46@yahoo.com

On Apr 25, 8:15 am, Meat Plow <mhyw...@yahoo.com> wrote:
> On Sun, 25 Apr 2010 12:41:11 +1000, "Phil Allison"
> <phi...@tpg.com.au>wrote:
>
>
>
> >"Ron Weston"
>
> >> I'm afraid the degaussing circuit in the TV is not working.
>
> >**  Now he tells us ......
>
> >Did he never guess that the failure of the degaussing circuit  CAUSED  the
> >green patches to appear ??
>
> I wonder how someone who would ask these question about degaussing
> determine the internal degauss wasn't working?

I had a TV with a failed degaussing system which caused a serious
color blotch as Phil described. This one failed because of a relay
contact flexing the solder joint on the PCB which eventually failed. I
removed all the old solder and re-soldered it. It went 8 years before
the first failure.

G²

==============================================================================
TOPIC: wholesale nike dunk sb shoes (www.sourcesoso.com )
http://groups.google.com/group/sci.electronics.repair/t/506561bd2e2e77db?hl=en
==============================================================================

== 1 of 1 ==
Date: Sun, Apr 25 2010 9:51 am
From: wholesale shoes

Air max shoes:

air max90
air 90
air 180
nike max
airmax tn
max trainers
air stab
max bw
max 90
air turbulence
air shox
airmax 95s
nike airmax
air shoes
airmax 90
airmax 87
airmax ltd
airmax 2009
air 95
max 180
airmax shoes
airmax 360
airmax 95
max tn
max 95
discount nike air
nike air trainers
max shoes
nike max shoes
air nike
buy nike air
cheap nike air
air huarache
air foamposite
air penny
max trainer
airmax running shoes
air zoom
nike air shoes
airmax trainers
max 360
buy airmax
airmax 1
air retro
airmax
airmax 95's
airmax 180
shoes lebron
nike trainers

jordan shoes :

jordan shoes
jordan sneaker
jordans
jordan 23
jordan shoe
jordan shoes for sale
new jordan shoes
retro jordan
jordan sneakers
jordan dub zero
jordan kids
jordan xiii
air jordon
jordan xi
jordan iv
jordan brand
nike jordan
nike shoes
jordan kicks
jordan 4
jordan 11
jumpman23
air shox
buy jordan shoes
all jordan shoes
airjordan shoes
authentic jordan shoes
jordan retro shoes
authentic jordan
jordans shoe
airjordan
jordan kids shoes
retro jordans
jordan xx
jordan xix
jordan jumpman
jordan xii
jordan vii
rare jordan
cheap jordan shoes
jordans shoes
jordan size
new jordans
air retro
wholesale jordan shoes
nike jordan shoes
cheap jordan
authentic jordans
wholesale jordan
cheap jordans
wholesale jordans
discount jordan shoes

Nike shox shoes:

nike shox r4
nike shox nz
nike shoe
shox oz
shox monster
shox turbo
nike shoes
shox nike
shox women
shox r4
mens shox
shox shoes
shox sneakers
air shox
shox trainers
nike nz
shox running shoes
shox nz
shox tl
running shox
womens shox
kids shox
women's shox
shox sale
shox r4 torch
nike r4
shox tl3
nike shox classic
women shox shoes
nike shox tl1
shox r4 shoes
adidas shoes
shoes
men's shox
classic shox
air shox shoes
shox shoe
nike air force 1
nike air force
nike air force one
nike air max
shox nz shoes
nike basketball
nike trainers
shox turbo oz
shox nz premium
shox tl 3
nike air jordan
cheap shox
shox tl1
nike air
nikeshox
cheap shox shoes
buy shox
shox online
new shox
shox tz
shox on sale
nike running shoes
shox r5
discount shox
nike shocks
nike running
discount nike shoes
shox turb
shox outlet
women shox r4
shox r2
shoxs
shox clearance
nike sneakers
air force one shoes
air jordans
shox size 10
shox size 11
shox size 7
red and black shox
men shox
shox pink
red shox
black shox
silver shox
nike women
shox size 9
shox sneaker
white shox
shox r4 white
nike shox r2
nike size
nike classic
nike sale
basketball shox
nike airmax
nike dunk shoes
nike retro
nike footwear
nike jordan
nike dunks
nike adidas
shox basketball shoes
nike air force ones
puma nike
new nike shoes
ladies shox
nike basketball shoes
shox rival
nike dunk
nike air jordans
nike sb
nike shop
cheap nike shoes
nike dunk low
nike tennis
jordan women
nike men shoes
nike sneaker
air shoes
air max 95
air max 97
air max 360
dunk shoes
red puma shoes
air force 1
sneakers
air force one
air force ones
air jordan shoes
jordan shoes
air jordan 1
air jordan 13
air jordan 2
air jordan 20
air jordan 22
air jordan 11
air jordan 21
air jordan 3
air jordan 4
air jordan 7
air jordan 10
air jordan 6
air jordan 8
air jordan
air jordan 12
air jordan 9
air jordan 14
jordan sneakers
air jordan5
shoes basketball
jordans
jordan original
puma men shoes
sport shoes
eastbay
supra shoes
eastbay outlet
nike shoes
nike shox
mens shox
shox sneakers
air shox
shox trainers
shox women
shox r4
air force one shoes
basketball shoes
cheap nike shox
shox oz
shox monster
shox turbo
nike shox r4
classic shox
men shox
black shox
nikeshox
shoes
women's shox
air force 1 shoes
shox sale
dunk shoes
shox r4 torch
shox tl3
kids shox
womens shox
shox r2
women's nike shox
nike air max
jordan shoes
running shox
shox nz
shox tl
shox tl1
cheap shox
nike shox monster
nike shox turbo
air max 90 shoes
white shox
nike air max shoes
air max 95 shoes
yellow shoes
airmax shoes
blue shoes
men's shox
shox rival
air shoes
basketball shox
nike dunks shoes
classic shoes
shox nike
mens shox r4
nike dunk shoes
nike shox classic
air nike shox
white shoes
shox r4 black
shox r4 white
nikes shoes
shox r4 2009
dunks shoes
nike shoe
mens shoes
women shoes
pink shoes
air force shoes
nike air shox
buy shox
new shox
shox turb
shox tz
shox eu
nike shox tl3
puma shoes
black shoes
shox outlet
mens nike shox
retro shoes
af1 shoes
trainers shoes
sneaker shoes
sneakers shoes
nike sb shoes
silver shoes
air force ones shoes
lebron shoes
buy nike shox
air jordan shoes
new jordan shoes
shoxs
r4 shoes
shox tl 3
shox on sale
shox nz premium
air force one
nz shoes
running shoes
nike shox flight
jordans shoes
nike shox tl
nike shox nz
nikeshox r4
rival shox
shoes size
suede shoes
nike shox discount
adidas shoes
nba shoes
reebok shoes
sport shoes
tn shoes
leather shoes
nike shoes discount
sports shoes
bape shoes
discount shox
converse shoes
new balance shoes
air force ones
air jordans
men shoes
air force 1 wholesale
air jordans wholesale
cheap air force ones

Air force one shoes:

air force ones shoes
nike air force one shoes
air force one shoes
air force 1 shoes
wholesale air force one shoes
air force one shoe
air force one low
air force ones
air force one mid
air force 1 low
authentic air force ones
wholesale air force one
cheap air force ones
custom air force ones
custom air force 1
air force ones shoe
buy air force one shoes
new air force one shoes
jordan shoes air force one
air force one sneakers
air force one sneaker
air force one nike
buy air force 1 shoes
nike air force 1 shoes
buy air force one
air force one's
new air force one
air force one high
air force shoes
air force 1 shoe
nike air force shoes
nike air force ones
air force 1 for sale
air force shoe
air force one tennis shoes
air force 1 sneakers
air force 1 sneaker
new air force 1
air force 1 25
air force 1 lebron
air force 1's
nike air force 1
air force 1 sale
white air force one
all air force ones
buy air force ones
new air force ones
air force ones for sale
all white air force ones
air force ones sneakers
black air force ones
white air force ones
air force ones low
air force ones mid
air forces shoes
nike af1 shoes
air force one nikes
af1 shoes
shoes for sale
air force jordan
supra shoes
air force 1 obama
white air force 1
nike air forces
wholesale shoes
air force 1 mid
shox shoes
airforce one
dunk shoes
white shoes
air force ones for kids
pink shoes
cheap air force one shoes
custom air force one shoes
custom air force ones shoes
nike air jordan
air forces
cheap air force one
cheap air force 1 shoes
jordans and air force ones
clear air force one
custom air force one
air force ones jordans
nike shox shoes
air force one kicks
air force ones for cheap
wholesale air force ones
nike af1
exclusive air force ones
rare air force ones
clear air force ones
customized air force ones
air force 1s shoes
cheap air force 1
air force 1 wholesale
cheap jordan shoes
clear air force 1
wholesale jordan shoes
air force 1 kicks
sneakers shoes

==============================================================================
TOPIC: wholesale Burberry shirt (paypal payment)
http://groups.google.com/group/sci.electronics.repair/t/4b5cefc2624fe49e?hl=en
==============================================================================

== 1 of 1 ==
Date: Sun, Apr 25 2010 10:23 am
From: world-trade

(paypal payment)( http://www.jordanonline06.com/ ) wholesale D&G T-
shirt
(paypal payment)( http://www.jordanonline06.com/ ) wholesale Polo T-
shirt
(paypal payment)( http://www.jordanonline06.com/ ) wholesale ED T-
shirt
(paypal payment)( http://www.jordanonline06.com/ ) wholesale ARMANI T-
shirt
(paypal payment)( http://www.jordanonline06.com/ ) wholesale BAPE T-
shirt
(paypal payment)( http://www.jordanonline06.com/ ) wholesale BBC T-
shirt
(paypal payment)( http://www.jordanonline06.com/) wholesale BOSS T-
shirt
(paypal payment)( http://www.jordanonline06.com/ ) wholesale Burberry
T-shirt
(paypal payment)( http://www.jordanonline06.com/ ) wholesale CA T-
shirt
(paypal payment)( http://www.jordanonline06.com/) wholesale Burberry t
shirt
(paypal payment)( http://www.jordanonline06.com/) wholesale COOGI T-
shirt
(paypal payment)( http://www.jordanonline06.com/ ) wholesale Lacoste
shirt
(paypal payment)( http://www.jordanonline06.com/) wholesale Ralph
lauren
(paypal payment)( http://www.jordanonline06.com/ ) wholesale Ralph
Lauren polo T-shirt
(paypal payment)( http://www.jordanonline06.com/) wholesale Ralph
lauren t shirt
(paypal payment)( http://www.jordanonline06.com/ ) wholesale
Abercrombie & fitch shirt
(paypal payment)( http://www.jordanonline06.com/ ) wholesale Burberry
shirt
(paypal payment)( http://www.jordanonline06.com/) wholesale Burberry t
shirt
(paypal payment)( http://www.jordanonline06.com/ ) wholesale NBA
sports jersey
paypal payment)( http://www.jordanonline06.com/ ) wholesale CRYSTAL
ROCK
(paypal payment)( http://www.jordanonline06.com/ ) wholesale DIESEL T-
shirt
(paypal payment)( http://www.jordanonline06.com/ ) wholesale DSQUARED
T-shirt men's
(paypal payment)( http://www.jordanonline06.com/ ) wholesale DSQUARED
T-shirt women's
(paypal payment)( http://www.jordanonline06.com/ ) wholesale Eck?
Unltd T-shirt
(paypal payment)( http://www.jordanonline06.com/ ) wholesale ED T-
shirt men's
(paypal payment)( http://www.jordanonline06.com/ ) wholesale ED T-
shirt women's
(paypal payment)( http://www.jordanonline06.com/ ) wholesale EVISU T-
shirt
(paypal payment)( http://www.jordanonline06.com/) wholesale GGG T-
shirt
(paypal payment)( http://www.jordanonline06.com/ ) wholesale G-STAR T-
shirt
(paypal payment)( http://www.jordanonline06.com/ ) wholesale HLST T-
Shirt
(paypal payment)( http://www.jordanonline06.com/) wholesale Lacoste T-
shirt
(paypal payment)( http://www.jordanonline06.com/ ) wholesale Lacoste T-
shirt women's
(paypal payment)( http://www.jordanonline06.com/ ) wholesale LRG T-
shirt
(paypal payment)( http://www.jordanonline06.com/) wholesale O&L T-
shirt
(paypal payment)( http://www.jordanonline06.com/) wholesale POLO 3 T-
shirt
(paypal payment)( http://www.jordanonline06.com/ ) wholesale 4 T-
shirt
(paypal payment)( http://www.jordanonline06.com/) wholesale POLO 5 T-
shirt
(paypal payment)( http://www.jordanonline06.com/) wholesale POLO T-
shirt men's

ARMANI,APE,BBC ,BOSS ,Burberry ,CA ,COOGI ,CRYSTAL
ROCK ,D&G ,DIESEL ,DSQUARED,DSQUAREDEck,Unltd ,ED ,EVISU ,GGG ,G-
STAR ,HLST ,Lacoste ,LRG ,O&Lm,POLO 3 ,4 ,POLO 5 ,POLO

==============================================================================
TOPIC: cheap wholesale, ED hardy ,hat (paypal payment)
http://groups.google.com/group/sci.electronics.repair/t/28df11e5415d944b?hl=en
==============================================================================

== 1 of 1 ==
Date: Sun, Apr 25 2010 10:40 am
From: world-trade

(paypal payment)(http://www.jordanonline06.com/ ) cheap wholesale
puma hat
(paypal payment)( http://www.jordanonline06.com/ ) cheap wholesale
bape hat
(paypal payment)( http://www.jordanonline06.com/ ) cheap wholesale
EDhardy hat
(paypal payment)( http://www.jordanonline06.com/ ) cheap wholesale
era NBA hat
(paypal payment)( http://www.jordanonline06.com/ ) cheap wholesale
era hat
(paypal payment)( http://www.jordanonline06.com/ ) cheap wholesale
Christan Audigier,hat
(paypal payment)( http://www.jordanonline06.com/ ) cheap wholesale
DG belt
(paypal payment)( http://www.jordanonline06.com/ ) cheap wholesale LV
belt
(paypal payment)(http://www.jordanonline06.com/ ) cheap wholesale
POLO belt
(paypal payment)( http://www.jordanonline06.com/ ) cheap wholesale
GUCCI belt
(paypal payment)(http://www.jordanonline06.com/ ) cheap
wholesale,BOSS, belt
(paypal payment)(http://www.jordanonline06.com/ ) cheap
wholesale,ARMANI, belt
(paypal payment)( http://www.jordanonline06.com/ ) cheap
wholesale,dunhill,belt
(paypal payment)( http://www.jordanonline06.com/ ) cheap
wholesale,LEVIS, belt
(paypal payment)( http://www.jordanonline06.com/ ) cheap
wholesale,Versace, belt
(paypal payment)( http://www.jordanonline06.com/ ) cheap
wholesale,BAPE, belt
(paypal payment)( http://www.jordanonline06.com/ ) cheap
wholesale,ED hardy, belt
(paypal payment)(http://www.jordanonline06.com/ ) cheap wholesale,
puma,hat
(paypal payment)( http://www.jordanonline06.com/ ) cheap
wholesale,bape ,hat
(paypal payment)( http://www.jordanonline06.com/ ) cheap wholesale,
era NBA ,hat
(paypal payment)( http://www.jordanonline06.com/ ) cheap
wholesale,era ,hat
(paypal payment)( http://www.jordanonline06.com/ ) cheap wholesale,
ED hardy ,hat
(paypal payment)(http://www.jordanonline06.com/ ) cheap wholesale,
Christan Audigier,hat
(paypal payment)( http://www.jordanonline06.com/ ) cheap
wholesale,DG belt
(paypal payment)( http://www.jordanonline06.com/ ) cheap
wholesale,LV ,belt
(paypal payment)(http://www.jordanonline06.com/ ) cheap
wholesale,POLO, belt
(paypal payment)( http://www.jordanonline06.com/ ) cheap
wholesale,GUCCI ,belt
(paypal payment)( http://www.jordanonline06.com/ ) cheap
wholesale,BOSS, belt
(paypal payment)( http://www.jordanonline06.com/ ) cheap
wholesale,ARMANI, belt
(paypal payment)( http://www.jordanonline06.com/ ) cheap
wholesale,dunhill, belt
(paypal payment)( http://www.jordanonline06.com/ ) cheap
wholesale,LEVIS, belt
(paypal payment)(http://www.jordanonline06.com/ ) cheap
wholesale,Versace, belt
(paypal payment)( http://www.jordanonline06.com/ ) cheap
wholesale,BAPE, belt
(paypal payment)(http://www.jordanonline06.com/ ) cheap wholesale,ED
hardy, belt
(paypal payment)( http://www.jordanonline06.com/ ) cheap wholesale,
puma,hat
(paypal payment)( http://www.jordanonline06.com/ ) cheap
wholesale,bape ,hat
(paypal payment)( http://www.jordanonline06.com/ ) cheap wholesale,
era NBA ,hat
(paypal payment)( http://www.jordanonline06.com/ ) cheap
wholesale,era ,hat
(paypal payment)( http://www.jordanonline06.com/ ) cheap wholesale,
ED hardy ,hat
(paypal payment)( http://www.jordanonline06.com/ ) cheap wholesale,
Christan
Audigier,hat

==============================================================================
TOPIC: RoHS/PbF for customers
http://groups.google.com/group/sci.electronics.repair/t/be6b5e1bdd1355e9?hl=en
==============================================================================

== 1 of 3 ==
Date: Sun, Apr 25 2010 12:13 pm
From: David Nebenzahl

On 4/24/2010 9:17 AM N_Cook spake thus:

> This is a reasonable start, certainly autoritive but nothing about
> in-service vibration and/or temperature on PbF embrittlement
>
> from 2006
> http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20080039268_2008037503.
> pdf
> DEVELOPING A NASA LEAD-FREE POLICY FOR ELECTRONICS
> LEARNED LESSONS
> Michael J. Sampson
> MD, 20771, USA
> National Aeronautics and Space Administration, Goddard Space Flight Center,
> Greenbelt,

[...]

> Pure tin termination finishes shall be avoided whenever possible and
> shall be carefully mitigated against the risk of whisker growth if
> their use is unavoidable.

So how the hell does one mitigate against the growth of tin whiskers?

--
The fashion in killing has an insouciant, flirty style this spring,
with the flaunting of well-defined muscle, wrapped in flags.

- Comment from an article on Antiwar.com (http://antiwar.com)

== 2 of 3 ==
Date: Sun, Apr 25 2010 12:55 pm
From: "N_Cook"

David Nebenzahl <nobody@but.us.chickens> wrote in message
news:4bd4a124$0$2364$822641b3@news.adtechcomputers.com...
> On 4/24/2010 9:17 AM N_Cook spake thus:
>
> > This is a reasonable start, certainly autoritive but nothing about
> > in-service vibration and/or temperature on PbF embrittlement
> >
> > from 2006
> >
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20080039268_2008037503.
> > pdf
> > DEVELOPING A NASA LEAD-FREE POLICY FOR ELECTRONICS
> > LEARNED LESSONS
> > Michael J. Sampson
> > MD, 20771, USA
> > National Aeronautics and Space Administration, Goddard Space Flight
Center,
> > Greenbelt,
>
> [...]
>
> > Pure tin termination finishes shall be avoided whenever possible and
> > shall be carefully mitigated against the risk of whisker growth if
> > their use is unavoidable.
>
> So how the hell does one mitigate against the growth of tin whiskers?
>
>
> --
> The fashion in killing has an insouciant, flirty style this spring,
> with the flaunting of well-defined muscle, wrapped in flags.
>
> - Comment from an article on Antiwar.com (http://antiwar.com)

Its called traditional eutectic Lead-Tin solder. Even the late-mediaeval
church organ builders were aware of tin-pest, even if they thought it was
the work of the devil. All RoHS compliant components are now tinned with 100
percent tin so the mitigation there is having to strip it off, mechanically,
or a nice "ring of death " develops.
The first time you go round minor components on a vibration/temperature
affected RoHS board giving a gentle tug, to the leads of 1/3 W resistors or
wire links say, with a pair of thin-nose pliers, is quite an eye opener.
Whether tin-pest (and consequential expansion) or lack of wetting I don't
know, but you never used to see that problem

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://diverse.4mg.com/index.htm

== 3 of 3 ==
Date: Sun, Apr 25 2010 2:23 pm
From: Jeff Liebermann

On Sun, 25 Apr 2010 12:13:52 -0700, David Nebenzahl
<nobody@but.us.chickens> wrote:

>So how the hell does one mitigate against the growth of tin whiskers?

Reflow to reduce internal stresses. See 4.3 in:
<http://www.sjsu.edu/faculty/selvaduray/page/papers/mate234/qiansun.pdf>

--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

==============================================================================

You received this message because you are subscribed to the Google Groups "sci.electronics.repair"
group.

To post to this group, visit http://groups.google.com/group/sci.electronics.repair?hl=en

To unsubscribe from this group, send email to sci.electronics.repair+unsubscribe@googlegroups.com

To change the way you get mail from this group, visit:
http://groups.google.com/group/sci.electronics.repair/subscribe?hl=en

To report abuse, send email explaining the problem to abuse@googlegroups.com

==============================================================================
Google Groups: http://groups.google.com/?hl=en