sci.electronics.repair@googlegroups.com

Today's topics:

* AVO 8 Mk 4 ... - 9 messages, 7 authors
http://groups.google.com/group/sci.electronics.repair/t/a0ca6d125e6a7e97?hl=en
* Foregoing warranty rights - 6 messages, 3 authors
http://groups.google.com/group/sci.electronics.repair/t/db33289fb500ca5c?hl=en
* world meti nano dna - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/f46cadf348a9d7a8?hl=en
* LJ44-00092C - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/aadca16cb07e5e34?hl=en
* Viewsonic G810 with weird horizontal problem - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/fb407eb5e24f82b2?hl=en
* Recommendation for electronics forums? - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/a2a97ca7806d8277?hl=en

==============================================================================
TOPIC: AVO 8 Mk 4 ...
http://groups.google.com/group/sci.electronics.repair/t/a0ca6d125e6a7e97?hl=en
==============================================================================

== 1 of 9 ==
Date: Sat, Apr 2 2011 9:04 am
From: Ian Jackson

In message <YMGlp.2602$9h6.1532@newsfe02.ams2>, Arfa Daily
<arfa.daily@ntlworld.com> writes
>
>
>"Ian Jackson" <ianREMOVETHISjackson@g3ohx.demon.co.uk> wrote in message
news:CZnwdpQd1vlNFw2E@g3ohx.demon.co.uk...
>>

>>
>> http://www.vintage-radio.net/forum/showthread.php?t=756
>> ---->
>> http://www.g1jbg.co.uk/service.htm
>> Any good?
>> -- Ian
>
>Yep. Been to all those places Ian. Thanks anyway
>
Ah! The Mk 4 is an AVO Multiminor - not an Avo 8. Sorry!
--
Ian

== 2 of 9 ==
Date: Sat, Apr 2 2011 10:27 am
From: "Ian Field"

"Arfa Daily" <arfa.daily@ntlworld.com> wrote in message
news:ucGlp.2500$cx.984@newsfe24.ams2...
>
>
> "Ian Field" <gangprobing.alien@ntlworld.com> wrote in message
> news:I2Flp.7637$5t2.6791@newsfe06.ams2...
>>
>> "Arfa Daily" <arfa.daily@ntlworld.com> wrote in message
>> news:HaClp.2679$Pi.398@newsfe22.ams2...
>>>
>>>
>>> "Ian Field" <gangprobing.alien@ntlworld.com> wrote in message
>>> news:c1rlp.2624$Pi.960@newsfe22.ams2...
>>>>
>>>> "Arfa Daily" <arfa.daily@ntlworld.com> wrote in message
>>>> news:5Rqlp.4508$o81.2161@newsfe28.ams2...
>>>>>
>>>>>
>>>>> "Robin" <see@sig.sep> wrote in message
>>>>> news:97olp.1305$bT6.318@newsfe05.ams2...
>>>>>> Arfa Daily wrote:
>>>>>>> Anybody got a copy of the schematic that's in the back of the user
>>>>>>> guide that they can scan for me, please ? I've searched all my files
>>>>>>> and drawers high and low, and can't find my book anywhere ... I
>>>>>>> thought that the 'net would be awash with copies of the schematic,
>>>>>>> but it seems only for the Mk 2, which is totally different to the MK
>>>>>>> 4.
>>>>>>> TIA
>>>>>>>
>>>>>> Is it the circuit diagram at
>>>>>> http://www.radiomuseum.org/r/avo_universal_avometer_8_mk_i.html ?
>>>>>> (Registration necessary for download. I have not done it as mine's a
>>>>>> Mk II.)
>>>>>> --
>>>>>> Robin
>>>>>> PM may be sent to rbw0{at}hotmail{dot}com
>>>>>>
>>>>>
>>>>> Hi Robin, thanks for that. It would appear to be the correct one.
>>>>> Looks as though you need to pay to become a member, so I will hold off
>>>>> for now until all the feelers that I have out, run dry. It's really
>>>>> annoying because I have owned the meter from new when I was an
>>>>> apprentice, and I have the book, which has the schematic in it,
>>>>> carefully filed away somewhere, but I'm buggered if I can now find it.
>>>>> It is in a box file, but said boxfile is not where I know it should
>>>>> be. Even more annoying is that I have damaged the meter by my own
>>>>> stupidity, so now have the need to fix it ... :-(
>>>>
>>>> There may be an outside chance its turned up on
>>>> alt.binaries.e-book.technical at some time or other.
>>>>
>>>> Whether I'd have downloaded it is another matter, and it would take a
>>>> while to search my archives.
>>>>
>>>> You could try a REQ: on that group while I try to remember where I put
>>>> all the unsorted stuff.
>>>>
>>>
>>> Thanks Ian. Be appreciated if you were able to have a quick look.
>>> Wouldn't have been a problem back in our old TeleMag days. John would
>>> have flung an ad in "Help Wanted" for me ... :-)
>>
>>
>> All I found is the AVO 8 MKII user manual with schematic and a document
>> claiming to be the AVO 8 service manual, its a collection of pages in
>> typewriter font describing servicing proceedures - no illustrations.
>>
>> If you want them name a binaries I can upload to.
>>
>> Have you tried BAMA? - I haven't been there since they changed their
>> website to stop people like me leeching the whole lot - they've
>> undoubtedly added new stuff since then.
>>
> A friend of mine has access to Model 8 I, II, III, V, VI, and VII , but no
> IV. Curious ... Interestingly, I have now found my book, which I was
> absolutely certain was issued to me with the meter, and it's for a
> Mk III , which is entirely different. Hmmm ...
>
> I just went and looked at a BAMA mirror site, and lo ! I have found a file
> that says it's for the Mk IV. I've downloaded it, but now need to find
> some software to open it. It says that it is .DJVU format ??

Lizardtech DJVU is a PITA but it produces small files - the main problems
are lack of scrolling and you can't set it to restore last viewed page next
time you open it.

What I do is open the DJVU with the IE pluggin and hit print with Cutepdf
installed (creates a virtual printer which is actually a PDF file), you have
to jump to the last page in the DJVU and when the settings box opens reset
the from box to 1.

== 3 of 9 ==
Date: Sat, Apr 2 2011 10:56 am
From: Meat Plow

On Sat, 02 Apr 2011 10:45:22 +0100, Arfa Daily wrote:

> "Meat Plow" <mhywattt@yahoo.com> wrote in message
> news:pan.2011.04.01.21.02.25@lmao.lol.lol...
>> On Fri, 01 Apr 2011 21:46:53 +0100, Arfa Daily wrote:
>>
>>> "Robin" <see@sig.sep> wrote in message
>>> news:97olp.1305$bT6.318@newsfe05.ams2...
>>>> Arfa Daily wrote:
>>>>> Anybody got a copy of the schematic that's in the back of the user
>>>>> guide that they can scan for me, please ? I've searched all my files
>>>>> and drawers high and low, and can't find my book anywhere ... I
>>>>> thought that the 'net would be awash with copies of the schematic,
>>>>> but it seems only for the Mk 2, which is totally different to the MK
>>>>> 4. TIA
>>>>>
>>>> Is it the circuit diagram at
>>>> http://www.radiomuseum.org/r/avo_universal_avometer_8_mk_i.html ?
>>>> (Registration necessary for download. I have not done it as mine's a
>>>> Mk II.)
>>>> --
>>>> Robin
>>>> PM may be sent to rbw0{at}hotmail{dot}com
>>>>
>>>>
>>> Hi Robin, thanks for that. It would appear to be the correct one.
>>> Looks as though you need to pay to become a member, so I will hold off
>>> for now until all the feelers that I have out, run dry. It's really
>>> annoying because I have owned the meter from new when I was an
>>> apprentice, and I have the book, which has the schematic in it,
>>> carefully filed away somewhere, but I'm buggered if I can now find it.
>>> It is in a box file, but said boxfile is not where I know it should
>>> be. Even more annoying is that I have damaged the meter by my own
>>> stupidity, so now have the need to fix it ... :-(
>>>
>>> Arfa
>>
>> That's too bad. I have some old gear I used as an apprentice that have
>> a high value in the nostalgia department. An old EICO 232 VTVM, B&K
>> 1801 freq. counter, Beckman Tech 310 DVM, Amprobe Amp Clamp and some
>> other things that I can't think of right now.
>>
>>
>>
>>
> Yes, Meat. It's very frustrating. I cut my 'professional' teeth with
> that meter, and it has served me faithfully over the years without
> serious mishap. It is still in weekly use, but not quite the daily use
> that it once was. For some types of repair, the swinging needle of a
> quality instrument like this, is so much more appropriate than a digital
> type ...
>
> Arfa
>> --

I got used to the LCD after using one for 25 years but it took awhile
after using the EICO and a Simpson. The Beckman 310 was the first LCD I
owned. I found a benchtop Beckman with LED's back in the 90's I used for
several years before it failed beyond repair. Now using my faithful Fluke
77. This is one that had a touch hold button in the middle of the
selector. It's hard to put aside the tools you've learned to trust after
decades.

--
Live Fast Die Young, Leave A Pretty Corpse

== 4 of 9 ==
Date: Sat, Apr 2 2011 5:58 pm
From: "Arfa Daily"

"Robin" <see@sig.sep> wrote in message
news:iaHlp.2408$Ir.2384@newsfe13.ams2...
>> I just went and looked at a BAMA mirror site, and lo ! I have found a
>> file that says it's for the Mk IV. I've downloaded it, but now need
>> to find some software to open it. It says that it is .DJVU format ??
>>
> The site has links to viewers: see eg http://bama.edebris.com/manuals/avo
> FWIW I use Irfan. And you will need then the djvu plug-in (from the same
> site). But I am sorry to have to tell you that if you have downloaded
> mk4elect.djvu it is the manual for the Avo Electronic Testmeter Mark 4.
> (I know 'cos I got some of my manuals from BAMA and looked there yesterday
> when you first asked: I am *really* looking for excuses not to get back to
> crawling around in the loft!)
>
> --
> Robin
> PM may be sent to rbw0{at}hotmail{dot}com
>

I got me a viewer (I actually have Irfan as well, but didn't realise it did
these djvu's) and yes, you are quite right, it is the wrong one, even though
it appears to be listed as one of the 8's. Anyways, meter is now fixed - see
my later post ! :-)

Arfa

== 5 of 9 ==
Date: Sat, Apr 2 2011 6:02 pm
From: "Arfa Daily"

"Meat Plow" <mhywattt@yahoo.com> wrote in message
news:pan.2011.04.02.17.56.07@lmao.lol.lol...
> On Sat, 02 Apr 2011 10:45:22 +0100, Arfa Daily wrote:
>
>> "Meat Plow" <mhywattt@yahoo.com> wrote in message
>> news:pan.2011.04.01.21.02.25@lmao.lol.lol...
>>> On Fri, 01 Apr 2011 21:46:53 +0100, Arfa Daily wrote:
>>>
>>>> "Robin" <see@sig.sep> wrote in message
>>>> news:97olp.1305$bT6.318@newsfe05.ams2...
>>>>> Arfa Daily wrote:
>>>>>> Anybody got a copy of the schematic that's in the back of the user
>>>>>> guide that they can scan for me, please ? I've searched all my files
>>>>>> and drawers high and low, and can't find my book anywhere ... I
>>>>>> thought that the 'net would be awash with copies of the schematic,
>>>>>> but it seems only for the Mk 2, which is totally different to the MK
>>>>>> 4. TIA
>>>>>>
>>>>> Is it the circuit diagram at
>>>>> http://www.radiomuseum.org/r/avo_universal_avometer_8_mk_i.html ?
>>>>> (Registration necessary for download. I have not done it as mine's a
>>>>> Mk II.)
>>>>> --
>>>>> Robin
>>>>> PM may be sent to rbw0{at}hotmail{dot}com
>>>>>
>>>>>
>>>> Hi Robin, thanks for that. It would appear to be the correct one.
>>>> Looks as though you need to pay to become a member, so I will hold off
>>>> for now until all the feelers that I have out, run dry. It's really
>>>> annoying because I have owned the meter from new when I was an
>>>> apprentice, and I have the book, which has the schematic in it,
>>>> carefully filed away somewhere, but I'm buggered if I can now find it.
>>>> It is in a box file, but said boxfile is not where I know it should
>>>> be. Even more annoying is that I have damaged the meter by my own
>>>> stupidity, so now have the need to fix it ... :-(
>>>>
>>>> Arfa
>>>
>>> That's too bad. I have some old gear I used as an apprentice that have
>>> a high value in the nostalgia department. An old EICO 232 VTVM, B&K
>>> 1801 freq. counter, Beckman Tech 310 DVM, Amprobe Amp Clamp and some
>>> other things that I can't think of right now.
>>>
>>>
>>>
>>>
>> Yes, Meat. It's very frustrating. I cut my 'professional' teeth with
>> that meter, and it has served me faithfully over the years without
>> serious mishap. It is still in weekly use, but not quite the daily use
>> that it once was. For some types of repair, the swinging needle of a
>> quality instrument like this, is so much more appropriate than a digital
>> type ...
>>
>> Arfa
>>> --
>
> I got used to the LCD after using one for 25 years but it took awhile
> after using the EICO and a Simpson. The Beckman 310 was the first LCD I
> owned. I found a benchtop Beckman with LED's back in the 90's I used for
> several years before it failed beyond repair. Now using my faithful Fluke
> 77. This is one that had a touch hold button in the middle of the
> selector. It's hard to put aside the tools you've learned to trust after
> decades.
>
>

Indeed it is. I have a hand portable DMM that is now the main workshop
workhorse, and I am very easy with it. I also have a bench true RMS 6 digit
job that is used fairly rarely. The AVO still gets used where I feel it is
the appropriate instrument for the job. I tend to be happier using it around
tube circuitry for measuring volts, and I prefer its ohms ranges for
measuring semiconductor junctions, even though the DMM has a diode test
facility

Arfa

== 6 of 9 ==
Date: Sat, Apr 2 2011 7:07 pm
From: H. Neary <£££nearyh£££@clara.co.uk>

On Sun, 3 Apr 2011 02:02:32 +0100, "Arfa Daily"
<arfa.daily@ntlworld.com> wrote:

>
>
>"Meat Plow" <mhywattt@yahoo.com> wrote in message
>news:pan.2011.04.02.17.56.07@lmao.lol.lol...
>> On Sat, 02 Apr 2011 10:45:22 +0100, Arfa Daily wrote:
>>
>>> "Meat Plow" <mhywattt@yahoo.com> wrote in message
>>> news:pan.2011.04.01.21.02.25@lmao.lol.lol...
>>>> On Fri, 01 Apr 2011 21:46:53 +0100, Arfa Daily wrote:
>>>>
>>>>> "Robin" <see@sig.sep> wrote in message
>>>>> news:97olp.1305$bT6.318@newsfe05.ams2...
>>>>>> Arfa Daily wrote:
>>>>>>> Anybody got a copy of the schematic that's in the back of the user
>>>>>>> guide that they can scan for me, please ? I've searched all my files
>>>>>>> and drawers high and low, and can't find my book anywhere ... I
>>>>>>> thought that the 'net would be awash with copies of the schematic,
>>>>>>> but it seems only for the Mk 2, which is totally different to the MK
>>>>>>> 4. TIA
>>>>>>>
>>>>>> Is it the circuit diagram at
>>>>>> http://www.radiomuseum.org/r/avo_universal_avometer_8_mk_i.html ?
>>>>>> (Registration necessary for download. I have not done it as mine's a
>>>>>> Mk II.)
>>>>>> --
>>>>>> Robin
>>>>>> PM may be sent to rbw0{at}hotmail{dot}com
>>>>>>
>>>>>>
>>>>> Hi Robin, thanks for that. It would appear to be the correct one.
>>>>> Looks as though you need to pay to become a member, so I will hold off
>>>>> for now until all the feelers that I have out, run dry. It's really
>>>>> annoying because I have owned the meter from new when I was an
>>>>> apprentice, and I have the book, which has the schematic in it,
>>>>> carefully filed away somewhere, but I'm buggered if I can now find it.
>>>>> It is in a box file, but said boxfile is not where I know it should
>>>>> be. Even more annoying is that I have damaged the meter by my own
>>>>> stupidity, so now have the need to fix it ... :-(
>>>>>
>>>>> Arfa
>>>>
>>>> That's too bad. I have some old gear I used as an apprentice that have
>>>> a high value in the nostalgia department. An old EICO 232 VTVM, B&K
>>>> 1801 freq. counter, Beckman Tech 310 DVM, Amprobe Amp Clamp and some
>>>> other things that I can't think of right now.
>>>>
>>>>
>>>>
>>>>
>>> Yes, Meat. It's very frustrating. I cut my 'professional' teeth with
>>> that meter, and it has served me faithfully over the years without
>>> serious mishap. It is still in weekly use, but not quite the daily use
>>> that it once was. For some types of repair, the swinging needle of a
>>> quality instrument like this, is so much more appropriate than a digital
>>> type ...
>>>
>>> Arfa
>>>> --
>>
>> I got used to the LCD after using one for 25 years but it took awhile
>> after using the EICO and a Simpson. The Beckman 310 was the first LCD I
>> owned. I found a benchtop Beckman with LED's back in the 90's I used for
>> several years before it failed beyond repair. Now using my faithful Fluke
>> 77. This is one that had a touch hold button in the middle of the
>> selector. It's hard to put aside the tools you've learned to trust after
>> decades.
>>
>>
>
>Indeed it is. I have a hand portable DMM that is now the main workshop
>workhorse, and I am very easy with it. I also have a bench true RMS 6 digit
>job that is used fairly rarely. The AVO still gets used where I feel it is
>the appropriate instrument for the job. I tend to be happier using it around
>tube circuitry for measuring volts, and I prefer its ohms ranges for
>measuring semiconductor junctions, even though the DMM has a diode test
>facility
>
>Arfa

It's what you are used to. I started out with an AVO 7 I think it
was 500 Ohms per Volt. It certainly had an effect on circuits even in
the days before CMOS.

I could turn on transistors and generally interact with circuits using
it. Although a tool no doubt aimed at Electrical Engineers it proved a
useful diagnostic instrument in an electronics environment.

Oddly enough the AVO eight was potentially more accurate than todays
digital afferings. At 20 K to the Volt, The AVO took half the current
of the modern DMM.

It was a dashed big needle to shift too.

My gripe with the AVO was that although it was a robust instrument,
you could buy around fifteen less robust meters for the same price.
Similar accuracy, smaller scale though and at a major price reduction.
Plus of course the fact that you could buy batteries to keep the Ohm
fires burning at your local newsagent. I seem to recollect tht The AVO
needed some kind of battery / inverter replacement when Ever Ready
stopped producing their very expensive box of volts.

Incidentally the final AVOs were not robust. They weighed about as
much as two of the £12-00 Tandy meters that I used to use at that
time.

That was prety light! I zapped a new AVO with one jab at a line output
valve topcap. Around 800 V p-p at 15 khz.

I still operate using the same philosophy today. I can pay a hundred
or so for a Fluke, or throw £20-00 across the counter at Maplin. Both
meters do the same at an acceptable accuracy and both share the same
fate when I forget to go from mA to volts when measuring across
phases. Both meters also tend to go green & gungy when exposed to
liquids. At least I do not feel too bad with a defunct £20-00 Tandy

HN

== 7 of 9 ==
Date: Sat, Apr 2 2011 10:27 pm
From: spam-no-spam@Onetel.net.uk.invalid (Windmill)

Mike Tomlinson <mike@jasper.org.uk> writes:

>In article <5Rqlp.4508$o81.2161@newsfe28.ams2>, Arfa Daily
><arfa.daily@ntlworld.com> writes
>> Even more annoying is that I have damaged the
>>meter by my own stupidity
>Measured the resistance of the mains?

You too, eh?
But they are indeed tough beasts; apart from a shaky ohms-adjust pot
it's still working 25 years later.

Doubtful if you could do that with a modern DVM and get away with it.

--
Windmill, Use t m i l l
TiltNot@Nonetel.com @ O n e t e l
. c o m

== 8 of 9 ==
Date: Sat, Apr 2 2011 11:25 pm
From: Mike Tomlinson

In article <LJ29u8.5vD@freebie.onetel.net.uk>, Windmill <spam-no-
spam@Onetel.net.uk.invalid> writes

>Doubtful if you could do that with a modern DVM and get away with it.

The one I measured the mains with was a mid-range ISO-Tech something or
other. It blew the internal fuse and worked OK after replacement. But
doubt many of the five quid cheapies would survive.

--
(\__/)
(='.'=)
(")_(")

== 9 of 9 ==
Date: Sun, Apr 3 2011 12:31 am
From: Ian Jackson

In message <vCPlp.3200$Dj5.343@newsfe10.ams2>, Arfa Daily
<arfa.daily@ntlworld.com> writes
>
>
>"Robin" <see@sig.sep> wrote in message
>news:iaHlp.2408$Ir.2384@newsfe13.ams2...
>>> I just went and looked at a BAMA mirror site, and lo ! I have found a
>>> file that says it's for the Mk IV. I've downloaded it, but now need
>>> to find some software to open it. It says that it is .DJVU format ??
>>>
>> The site has links to viewers: see eg
>>http://bama.edebris.com/manuals/avo FWIW I use Irfan. And you will
>>need then the djvu plug-in (from the same site). But I am sorry to
>>have to tell you that if you have downloaded mk4elect.djvu it is the
>>manual for the Avo Electronic Testmeter Mark 4. (I know 'cos I got
>>some of my manuals from BAMA and looked there yesterday when you
>>first asked: I am *really* looking for excuses not to get back to
>>crawling around in the loft!)
>>
>> -- Robin
>> PM may be sent to rbw0{at}hotmail{dot}com
>>
>
>I got me a viewer (I actually have Irfan as well, but didn't realise it
>did these djvu's) and yes, you are quite right, it is the wrong one,
>even though it appears to be listed as one of the 8's. Anyways, meter
>is now fixed - see my later post ! :-)
>
You can get your own DJVU maker (+viewer) here (and several other
interesting things):
http://www.tuberadio.it/
http://www.tuberadio.it/utils.htm
http://www.tuberadio.it/download/dvs31.exe
--
Ian

==============================================================================
TOPIC: Foregoing warranty rights
http://groups.google.com/group/sci.electronics.repair/t/db33289fb500ca5c?hl=en
==============================================================================

== 1 of 6 ==
Date: Sat, Apr 2 2011 9:46 am
From: Jeff Liebermann

On Fri, 01 Apr 2011 20:06:04 -0700, Smitty Two
<prestwhich@earthlink.net> wrote:

>In article <dm2dp6pteut9tnbknl4vbk5furp1lgq0hg@4ax.com>,
> Jeff Liebermann <jeffl@cruzio.com> wrote:
>
>> Incidentally, LG phones are generally good quality, fairly easy to
>> fix, and tend to survive.
>
>As I was leaning over a railing, talking on it, my LG slipped from my
>hand and fell 14 feet onto concrete. It landed flat. Back came off,
>battery popped out. Nary a scratch and works perfectly since.

Have you noticed that most cell phones have rounded corners and
bottoms? The rounded corner distributes the inpact load over a larger
area of the case than it would if it were more box shaped. However,
that doesn't seem to be a design feature in smartphones, which more
closely resemble a box due to the requirement of having a large
rectangular screen. Drop a smart phone, and they're history. The
number of cracked screens on the iPhone and Droid should offer a clue.
They do have somewhat rounded corners, but with a metal frame, any
edge impact transfers directly to the glass screen.

There are some better ideas, but these will need to wait for a change
in public acceptance of what a cell phone should look like:
<http://gadgetsin.com/bugatty-cell-phone-shaped-as-bugatti-veyron.htm>
<http://www.porhomme.com/2008/12/the-concept-handgun-with-built-in-cellphone/>
<http://www.thedesignblog.org/entry/dya-cell-phone-slides-diagonally-to-make-or-receive-a-call/>
<http://www.cellfoam.com>
etc...

--
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

== 2 of 6 ==
Date: Sat, Apr 2 2011 9:58 am
From: Jeff Liebermann

On Sat, 2 Apr 2011 14:09:39 +1100, "Phil Allison" <phil_a@tpg.com.au>
wrote:

>Why is it that no maker ever gives advice on what to do if your pocket
>digital wonder gets accidentally immersed or suffers a spillage ??

Because they want you to destroy their product so that you'll buy a
new one. Every product that is repaired is one less product that is
sold.
<http://www.ifixit.com/Manifesto>
If you're into ecology and conservation, repair is a good thing. If
you're into designed obsolescence, then it's a bad thing.

>Get the damn battery OUT immediately - then rinse and dry it pronto.

The common perception among cell phone vendors and manufacturers is
that the condition and disposition of the phone, AFTER IT'S SOLD, is
not their problem. If you trash the phone, unless you've purchased
the overpriced extended equipment warranty, it's your problem, not
theirs. In most cases, they don't even bother to repair the wet
phone, and simply issue a replacement (or try to sell you an upgrade).
I suppose safety might be a possible justification for removing the
battery, but selling the customer a new phone is far more profitable.

I suppose we could include some verbage in the voluminous book of
legal disclaimers and limitations of responsibility that seems to be
included with all consumer products these days. Removing the battery
would fit nicely between "Do not eat the phone" and "Do not go
swimming with your cell phone".

--
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 6 ==
Date: Sat, Apr 2 2011 9:50 pm
From: "Michael A. Terrell"

Jeff Liebermann wrote:
>
> On Sat, 2 Apr 2011 14:09:39 +1100, "Phil Allison" <phil_a@tpg.com.au>
> wrote:
>
> >Why is it that no maker ever gives advice on what to do if your pocket
> >digital wonder gets accidentally immersed or suffers a spillage ??
>
> Because they want you to destroy their product so that you'll buy a
> new one. Every product that is repaired is one less product that is
> sold.
> <http://www.ifixit.com/Manifesto>
> If you're into ecology and conservation, repair is a good thing. If
> you're into designed obsolescence, then it's a bad thing.
>
> >Get the damn battery OUT immediately - then rinse and dry it pronto.
>
> The common perception among cell phone vendors and manufacturers is
> that the condition and disposition of the phone, AFTER IT'S SOLD, is
> not their problem. If you trash the phone, unless you've purchased
> the overpriced extended equipment warranty, it's your problem, not
> theirs. In most cases, they don't even bother to repair the wet
> phone, and simply issue a replacement (or try to sell you an upgrade).
> I suppose safety might be a possible justification for removing the
> battery, but selling the customer a new phone is far more profitable.
>
> I suppose we could include some verbage in the voluminous book of
> legal disclaimers and limitations of responsibility that seems to be
> included with all consumer products these days. Removing the battery
> would fit nicely between "Do not eat the phone" and "Do not go
> swimming with your cell phone".

Or, "Do not swim while eating your cell phone..." ;-)

--
You can't fix stupid. You can't even put a Band-Aid™ on it, because it's
Teflon coated.

== 4 of 6 ==
Date: Sat, Apr 2 2011 10:19 pm
From: "Geoffrey S. Mendelson"

Michael A. Terrell wrote:
>
> Or, "Do not swim while eating your cell phone..." ;-)

Best one IMHO was the directions I got with a stainless steel coffee
percolator:

"Do Not Use In A Microwave Oven."

Geoff.
--
Geoffrey S. Mendelson N3OWJ/4X1GM
Those who cannot remember the past are condemned to misquote it.

== 5 of 6 ==
Date: Sat, Apr 2 2011 10:43 pm
From: Jeff Liebermann

On Sat, 2 Apr 2011 14:09:39 +1100, "Phil Allison" <phil_a@tpg.com.au>
wrote:

>Why is it that no maker ever gives advice on what to do if your pocket
>digital wonder gets accidentally immersed or suffers a spillage ??

One vendor tries to be ummmm... helpful:
<http://www.printingchoice.com/8-examples-of-horrific-fine-print/>
Near the bottom of the page:
"Motorola Razr: Do not try to dry your phone in a microwave"
Well, it's a start.
--
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

== 6 of 6 ==
Date: Sat, Apr 2 2011 11:58 pm
From: "Michael A. Terrell"

"Geoffrey S. Mendelson" wrote:
>
> Michael A. Terrell wrote:
> >
> > Or, "Do not swim while eating your cell phone..." ;-)
>
> Best one IMHO was the directions I got with a stainless steel coffee
> percolator:
>
> "Do Not Use In A Microwave Oven."

Sure, but that because you would have to lay it on it's side. ;-)

--
You can't fix stupid. You can't even put a Band-Aid™ on it, because it's
Teflon coated.

==============================================================================
TOPIC: world meti nano dna
http://groups.google.com/group/sci.electronics.repair/t/f46cadf348a9d7a8?hl=en
==============================================================================

== 1 of 1 ==
Date: Sat, Apr 2 2011 11:32 am
From: bhaskar b

http://worldbankgroup-kavi.blogspot.com/
http://meticulous-kavi.blogspot.com/
http://nanotechnologyfire-kavi.blogspot.com/
http://dnasequencing-kavi.blogspot.com/

==============================================================================
TOPIC: LJ44-00092C
http://groups.google.com/group/sci.electronics.repair/t/aadca16cb07e5e34?hl=en
==============================================================================

== 1 of 1 ==
Date: Sat, Apr 2 2011 12:01 pm
From: "Eike Lantzsch, ZP6CGE"

eltron wrote:
> Hello guys,
> Please i need your assistance with this board [Samsung, LJ44-00092C].
> There is a voltage shortage at VG out =15volt and D5v out =5.2v. The
> current voltage i have here coming out from VG=15volt is 13volt and
> D5v=5.2volt is 3volt. Every other dc outlets are outputing perfectly
> fine. I have changed the voltage regulators 7815 for 15volt and
> Lm2576t which is responsible for 5volt but yet i still get the same
> 13volt and 3volt out. Can someone tell me what exactly is responsible
> for this shortage? i'll really welcome your contributions.
> Thanks guys hope to hear from you sooner.
> eltron.

I don't know the board.
What is the input voltage for the regulators? I guess it's about 13V and 3V -
so no regulation. Is it a switched PS? If switched is the chopper a
push-pull arrangement or single ended? Is the transformer hot? Is there
extreme ripple on the input voltages of the regulators? Is there a
thermistor in series with the line input? Are both regulators on the
same rectifier or do they have their own transformer winding, rectifier
and capacitor? Last but not least: Do you operate a 230V PS on 120V?
Not enough data to suggest a solution.

Kind regards, Eike
--
"The adventures may be mad, but the adventurer must be sane."
- G. K. Chesterton (1908)

==============================================================================
TOPIC: Viewsonic G810 with weird horizontal problem
http://groups.google.com/group/sci.electronics.repair/t/fb407eb5e24f82b2?hl=en
==============================================================================

== 1 of 1 ==
Date: Sat, Apr 2 2011 12:20 pm
From: "Eike Lantzsch, ZP6CGE"

Dani wrote:
> Replace the flyback transformer part # Tlfa01365, & resolder the
> horizontal drive, & power supply section. Hope this helps.

Thank you so much for your suggestion. I'm still not sure if the flyback
is bad. Lets see if I can get a new one locally. Probably not a
PANASONIC - might be second source junk too. I'm in Paraguay.
If so I'll trash the monitor - not worth it.
The problem is not with the horizontal deflection but the video signal
is partly blanked (masked) out. The unit had no problems with the video signal
when the picture started to wobble horizontally. So I still guess that I
made a more or less dumb mistake when replacing the fried plug. But I
marked the four wires and the fault is the same either way they are
connected - beats me.
Good advice to resolder the horizontal stage and the power supply. I
already had to resolder the complete video board on the neck of the CRT
at an earlier occasion when sporadically colors were missing. The whole
PCB seems to be soldered very badly. One can't even see the difference
between a cold solder joint and a good one. What kind of solder did they
use? Not lead-less I think because the unit is so old.
Man I love the old Tektronics which came with a roll of silver solder
and the warning not to use anything else for repairs.

Kind regards, Eike

==============================================================================
TOPIC: Recommendation for electronics forums?
http://groups.google.com/group/sci.electronics.repair/t/a2a97ca7806d8277?hl=en
==============================================================================

== 1 of 1 ==
Date: Sat, Apr 2 2011 10:12 pm
From: "Michael A. Terrell"

Wiebe Cazemier wrote:
>
> Michael A. Terrell wrote:
>
> >> >> >>
> >> >> >> > The subject of my current research is the ins and
> >> >> >> > outs of op amps.
> >> >> >>
> >> >> >> A little pun, there?
> >> >> >
> >> >> > A bit bipolar, if you ask me...
> >> >>
> >> >> I dunno, but then again I may be biased.
> >> >
> >> >
> >> > I figured that you were a little off center. :)
> >> >
> >> >
> >>
> >> Now that's unfair feedback :)
> >
> >
> > Not if you're at unity gain... :)
>
> But then you'll run into oscillation

Everyone needs to exercise. :)

--
You can't fix stupid. You can't even put a Band-Aid™ on it, because it's
Teflon coated.

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

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