sci.electronics.repair@googlegroups.com

Today's topics:

* Opened laptop battery to replace lithium ion cells (Lenovo X61 tablet PC) --
Where do I get replacement battery cells? - 3 messages, 3 authors
http://groups.google.com/group/sci.electronics.repair/t/b825f0a2f4a3f913?hl=en
* Cracking open a Galaxy Audio PA amp - 11 messages, 6 authors
http://groups.google.com/group/sci.electronics.repair/t/8c5766cd3739b009?hl=en
* HP 214B Pulse Generator repair question - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/c99ffb38a259a6ba?hl=en
* SPAM - This is NOT a *forsale* group - 2 messages, 2 authors
http://groups.google.com/group/sci.electronics.repair/t/08b256a98db97e59?hl=en
* Advent Powered Loudspeaker and counterfeit transistors - 1 messages, 1
author
http://groups.google.com/group/sci.electronics.repair/t/978224ae2080569f?hl=en
* Cable box is making a ticking noise - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/be39a9de968f64c0?hl=en
* Sony KPR46CX10 tracking problem - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/4919fbb25549d24c?hl=en
* Discount Wholesale Roca Wear Jeans <free shipping paypal payment>Discount
Wholesale ZEN Jeans (http://www.cntrade09.com/) - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/b815229a86538909?hl=en

==============================================================================
TOPIC: Opened laptop battery to replace lithium ion cells (Lenovo X61 tablet
PC) -- Where do I get replacement battery cells?
http://groups.google.com/group/sci.electronics.repair/t/b825f0a2f4a3f913?hl=en
==============================================================================

== 1 of 3 ==
Date: Fri, Sep 17 2010 12:44 pm
From: Joe Schmoe

On Thu, 16 Sep 2010 19:46:39 -0600, WW wrote:
>> Here are the pictures of the operation on a Lenovo X61 tablet PC 8-cell
>> 4500 amp-hour battery kidney-transplant operation.
>> http://yfrog.com/4ylenovox61tlaptopbatteryjx
>>
>> The outside of the IBM Lenovo X61 tablet PC battery pack has the part
>> numbers:
>> - FRU 42T4507
>> - ASM 42T5209
>>
>> And the batteries themselves, seem to have numbers on them of: -
>> cylinders BCM 3A6 72653
>> - rectangles C 3 171353
>>
>> Any idea where to obtain these lithium ion replacement batteries?

> I just bought 2 lap top batteries, one for Dell and one for HP. Found
> them at Mobile Track Power. Good warranty and good prices. Why mess
> with what you have? WW

The question of why is a good one ... the answer is it's sheer cost! :)

The factory new battery is on the web for about $150.
I'm worried about the knockoffs which cost around $50 to $75.

BTW, I found some more references of successful rebuild DIYs which I'm
going through now as my biggest problem at the moment is finding the
replacement cells (later it will be fitting it all back together).

- HOW-TO: Rebuild your laptop battery by Engadget
http://www.engadget.com/2005/06/28/how-to-rebuild-your-laptop-battery/

- Rebuilding a Laptop Battery Oct 05, 2008 by Phil Hughes
http://www.linuxjournal.com/content/rebuilding-laptop-battery

- Refilling laptop batteries! February 17th, 2007 in Projects, Technology
http://www.summet.com/blog/2007/02/17/laptop-battery-refill/

- Can laptop batteries be repaired? by Isidor Buchmann Cadex Electronics,
December 2001
http://www.buchmann.ca/article21-page1.asp

- DIY Laptop Battery Rebuild: by Kevin O'Brien, NotebookReview.com on
1/30/2008
http://www.notebookreview.com/default.asp?newsID=4224

== 2 of 3 ==
Date: Fri, Sep 17 2010 2:19 pm
From: Allodoxaphobia

On Fri, 17 Sep 2010 19:44:32 +0000 (UTC), Joe Schmoe wrote:
>
> BTW, I found some more references of successful rebuild DIYs which I'm
> going through now as my biggest problem at the moment is finding the
> replacement cells (later it will be fitting it all back together).
>
> - HOW-TO: Rebuild your laptop battery by Engadget
> http://www.engadget.com/2005/06/28/how-to-rebuild-your-laptop-battery/
>
> - Rebuilding a Laptop Battery Oct 05, 2008 by Phil Hughes
> http://www.linuxjournal.com/content/rebuilding-laptop-battery
>
> - Refilling laptop batteries! February 17th, 2007 in Projects, Technology
> http://www.summet.com/blog/2007/02/17/laptop-battery-refill/
>
> - Can laptop batteries be repaired? by Isidor Buchmann Cadex Electronics,
> December 2001
> http://www.buchmann.ca/article21-page1.asp
>
> - DIY Laptop Battery Rebuild: by Kevin O'Brien, NotebookReview.com on
> 1/30/2008
> http://www.notebookreview.com/default.asp?newsID=4224

Thanks for those references!

Jonesy
--
Marvin L Jones | jonz | W3DHJ | linux
38.24N 104.55W | @ config.com | Jonesy | OS/2
* Killfiling google & XXXXbanter.com: jonz.net/ng.htm

== 3 of 3 ==
Date: Fri, Sep 17 2010 10:52 pm
From: isw

In article
<5450da0e-f842-43dd-a943-125edd917e58@c21g2000vba.googlegroups.com>,
trader4@optonline.net wrote:

--snippety--

> I just rebuilt a Nicad battery pack for my 20+ year old Milwaukee
> cordless driver drill. I found the batteries on Ebay for $21, so
> decided it was worth a try. I was successful and it's working
> great. But I do agree there are some real issues. In particular, I
> was very lucky that I got it to fit back into the battery housing.
> In the factory, the metal tab conductors are spot welded directly to
> the batteries and go from one to the next. When you DIY, you have to
> solder them

Google around and you can find references to building a simple
spot-welder for batteries -- check the RC model airplane folks.

Isaac

==============================================================================
TOPIC: Cracking open a Galaxy Audio PA amp
http://groups.google.com/group/sci.electronics.repair/t/8c5766cd3739b009?hl=en
==============================================================================

== 1 of 11 ==
Date: Fri, Sep 17 2010 12:57 pm
From: Ron

On 17/09/2010 19:47, Michael A. Terrell wrote:
>
> Ron wrote:
>>
>> On 17/09/2010 11:51, Michael A. Terrell wrote:
>>>
>>> Ron wrote:
>>>>
>>>> On 16/09/2010 19:26, Michael A. Terrell wrote:
>>>>>
>>>>> Ron wrote:
>>>>>>
>>>>>> On 16/09/2010 17:43, Michael A. Terrell wrote:
>>>>>>>
>>>>>>> Ron wrote:
>>>>>>>>
>>>>>>>> On 16/09/2010 16:15, thanatoid wrote:
>>>>>>>>> David Nebenzahl<nobody@but.us.chickens> wrote in
>>>>>>>>> news:4c91a6a6$0$2405$822641b3@news.adtechcomputers.com:
>>>>>>>>>
>>>>>>>>> <snip>
>>>>>>>>>
>>>>>>>>>> Thanks for the first and only really helpful reply in this
>>>>>>>>>> whole damn thread.
>>>>>>>>>>
>>>>>>>>>> You, sir, are a gentleman and a scholar. Sure enough,
>>>>>>>>>> removing the nut from the phone jack allowed the whole unit
>>>>>>>>>> to slip rather easily out of the case (I used a heavy knife
>>>>>>>>>> blade betwixt the case and chassis to start it).
>>>>>>>>>
>>>>>>>>> WHAT? You did NOT do that when you removed all the screws? I
>>>>>>>>> have not been reading the thread carefully ever since you
>>>>>>>>> ignored my request for a photograph, but DUUH!
>>>>>>>>>
>>>>>>>>>> The amp appears to be fine; there's either a problem with
>>>>>>>>>> the XLR mike input jack, or with the mike cable we were
>>>>>>>>>> using. (Can't test because I have no XLR plugs.)
>>>>>>>>>
>>>>>>>>> WHERE are you (as in, forest, garage with NO tools, an audio
>>>>>>>>> shop run by Scientologists who believe the e-meter is the only
>>>>>>>>> piece of electronic test equipment anyone needs) ????????
>>>>>>>>>
>>>>>>>>> SIGH.
>>>>>>>>>
>>>>>>>>> BTW, I have learned over the last 4 decades that it's ALWAYS the
>>>>>>>>> cable (and if it's not, you **still** test any cables FIRST
>>>>>>>>> before you do ANYTHING, including attempting to open an audio
>>>>>>>>> box [when you should let your friends open your canned food for
>>>>>>>>> you] let alone flooding an NG with clueless posts for a week),
>>>>>>>>> and /had/ you posted like a person with a clue, I would have
>>>>>>>>> told you to try another cable - I know you don't have one, BUY
>>>>>>>>> one!
>>>>>>>>>
>>>>>>>>> !!!!!!
>>>>>>>>>
>>>>>>>> In the world of professional audio, it`s hardly ever the cable!
>>>>>>>
>>>>>>>
>>>>>>> That depends on the quality of the materials and who made them.
>>>>>>
>>>>>>>
>>>>>>>> In the world of professional audio, it`s hardly ever the cable!
>>>>>>
>>>>>> Professional quality cable, professional quality connectors and
>>>>>> professional quality workmanship.
>>>>>
>>>>>
>>>>> There is a wide variation in all three.
>>>>>
>>>>>
>>>>
>>>> In your world maybe.
>>>
>>>
>>> If it makes you happy to think so. I've seen some real crap on the
>>> market that was called 'professional quality'. BTW, I owned a
>>> commercial sound business for about 15 years. I also saw equipment&
>>> cabling that was 20 years old and still working fine. I see more and
>>> more crap being made overseas that claim to be high quality or
>>> professional quality that will be lucky to not be in a landfill in a
>>> couple years.
>>>
>>>
>>
>> There you go then. You are confusing crap chinese, prepacked cables with
>> the words 'Professional' on the packet, for cables which are hand made
>> using the finest quality cable and connectors. There is very little 'on
>> the market' that is anywhere near professional quality. Most pro
>> companies either build their own cabling or have it made by companies
>> specialising in producing cabling for industry use. When your livelihood
>> depends on performance, you don't use 'Monster' cables!
>>
>> In my forty some years experience of working in professional audio, I
>> have found that it's very rare for a properly made cable to fail without
>> outside intervention.
>
>
> I made all of my own cables. Some are still good, after 40 years.
>
> I was a broadcast engineer at three TV stations and several radio
> stations during that time. We NEVER bought cables. I preferred
> Switchcraft connectors and Belden wire. I've had idiots drive over a
> pair of mated Switchcraft XLR connectors on concrete. All it did was
> scratch the finish.
>
>
>
I rest my case milud

== 2 of 11 ==
Date: Fri, Sep 17 2010 2:05 pm
From: "Michael A. Terrell"

Ron wrote:
>
> I rest my case milud

So, the 'Preparation H' finally worked for you?

--
Politicians should only get paid if the budget is balanced, and there is
enough left over to pay them.

== 3 of 11 ==
Date: Fri, Sep 17 2010 5:56 pm
From: thanatoid

"A. Baum" <50kiloton@net.not> wrote in
news:pan.2010.09.17.15.48.07@50kilotons.net.not:

<snip>

>>> Yep that's the best that the Nebenzahl troll-bot imbecile
>>> can do. What did you expect from someone who let a simple
>>> 1/4 jack nut defeat him for days LMAO!
>>
>> You did make me laugh, but go easy on the guy. He seems
>> OK. Not everyone knows everything, especially people who
>> post for help in groups like this.
>
> He posts his know-it-all shit in other groups yet can't
> figure out that you really need to remove every last
> visible nut/screw/bolt/fastener before giving up. Sorry but
> I find him an idiot and not just someone who knows less
> than someone else.

I am new to these groups and I have not seen the other posts you
refer to.

I will withhold further comments besides stating that he does
not /appear/ to be "an idiot", which of course does not mean he
is /not/ one. But the same goes for everyone else, myself and
yourself included.

--
"Anytime I hear the word "culture", I reach for my iPad."
- 21st Century Humanoid

== 4 of 11 ==
Date: Fri, Sep 17 2010 6:42 pm
From: "Arfa Daily"

"David Nebenzahl" <nobody@but.us.chickens> wrote in message
news:4c92c1a9$0$2406$822641b3@news.adtechcomputers.com...
> On 9/16/2010 6:03 PM Arfa Daily spake thus:
>
>> "Michael A. Terrell" <mike.terrell@earthlink.net> wrote in message
>>
>>> And you still don't get American humor. ;-)
>>
>> Wot ! You mean there is such a thing ... ? d:-}
>
> Nah, all our humor comes from the UK: Monty Python, Dame Edna, Eddy
> Izzard, Tracy Ullman, etc.
>
> Ackshooly, I've been saying for years that there are two types of
> Americans distinguishable by their taste for Brit humor. One one side we
> have the PBS-type humor, exemplified by "Are You Being Served?" (which I
> despise); on the other are those who like Benny Hill. I'm in the latter
> camp myself. (Hey, what's better than total slapstick? Worked for Chaplin
> ...)
>
>

You really shouldn't dis 'Are You Being Served ?' It was an absolute
classic up there with the likes of Fawlty Towers ... The double entendre
with things like Mrs Slocombe's pussy, were really quite risque for British
TV at the time. Although I used to really enjoy Benny Hill for its pure
slapstick, the humour was much cruder than that of AYBS.

Arfa

== 5 of 11 ==
Date: Fri, Sep 17 2010 6:44 pm
From: "Arfa Daily"

"Jamie" <jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net> wrote in message
news:5izko.5471$2D5.4757@newsfe08.iad...
> Arfa Daily wrote:
>
>>
>>
>> "Michael A. Terrell" <mike.terrell@earthlink.net> wrote in message
>> news:c-6dnXqYAI-4gQ_RnZ2dnUVZ_vWdnZ2d@earthlink.com...
>>
>>>
>>> Arfa Daily wrote:
>>>
>>>>
>>>> "Michael A. Terrell" <mike.terrell@earthlink.net> wrote in message
>>>> news:W-CdnYkpfYV8rQzRnZ2dnUVZ_rKknZ2d@earthlink.com...
>>>> >
>>>> > Arfa Daily wrote:
>>>> >>
>>>> >> "Michael A. Terrell" <mike.terrell@earthlink.net> wrote in message
>>>> >> news:BNCdnXxrdILq2Q3RnZ2dnUVZ_uadnZ2d@earthlink.com...
>>>> >> >
>>>> >> > David Nebenzahl wrote:
>>>> >> >>
>>>> >> >> I inherited a repair job that I can't get started because I
>>>> can't >> >> get
>>>> >> >> the damn amp open.
>>>> >> >>
>>>> >> >> It's a Galaxy Audio Core PA5X140 all-in-one PA. It's a tough
>>>> little
>>>> >> >> unit, with a die-cast metal chassis set into a thick rugged
>>>> plastic
>>>> >> >> (polypropylene?) case, that can sit on top of a mike stand.
>>>> Similar >> >> to
>>>> >> >> this one: http://galaxyaudio.com/MSPA.jsp. The front of the
>>>> chassis
>>>> >> >> has
>>>> >> >> 6 screws into the case, and there's one on the back I removed,
>>>> but >> >> I
>>>> >> >> still can't get the chassis out of the case. I tried prying the
>>>> >> >> case,
>>>> >> >> thinking there might be some cast-in lugs I could open, but no
>>>> >> >> luck,
>>>> >> >> and
>>>> >> >> I didn't want to risk chewing up the edge of the case.
>>>> >> >>
>>>> >> >> Does anyone have any idea how to open up this unit?
>>>> >> >
>>>> >> >
>>>> >> > At least no one has suggested a Plsma Cutter! ;-)
>>>> >> >
>>>> >>
>>>> >> Nah! "Angle grinder" as they always say over on uk.d-i-y :-)
>>>> >
>>>> >
>>>> > Angle grinders are for amateurs and wimps. It takes a real prow to
>>>> > cut something open with a plasma cutter and still have anything
>>>> left to
>>>> > repair. :)
>>>> >
>>>> >
>>>>
>>>> It's a standing joke on that group Michael. "Angle grinder" is the
>>>> 'silly'
>>>> answer when anyone asks for instance how to dismantle a ceramic
>>>> cartridge
>>>> shower valve to clean it, or anything referring to a 'delicate' job.
>>>> British
>>>> humour, and all that ... :-)
>>>
>>>
>>>
>>> And you still don't get American humor. ;-)
>>>
>>>
>>
>> Wot ! You mean there is such a thing ... ? d:-}
>>
>> Arfa
>>
>>
> Sure, look who get elected as our leaders :)
>

Well yes, but by the same token, we've just gotten rid of one load of jokers
in Blair followed by Brown and their cronies. The jury is still out on their
replacements, but not looking too promising so far ...

Arfa

== 6 of 11 ==
Date: Fri, Sep 17 2010 6:46 pm
From: "Arfa Daily"

>> >>
>> >
>> > Wot ! You mean there is such a thing ... ? d:-}
>> >
>> > Arfa
>> >
>> >
>>
>> The American equivalent is, "Get a bigger hammer".
>
>
> If you need a bigger hammer, you ARE a redneck.
>
>

Nah, that can't be right. A tour guide in Nevada told me that you could
recognise a redneck by his paddling pool being dug into the ground ...
:-)

Arfa

== 7 of 11 ==
Date: Fri, Sep 17 2010 6:51 pm
From: "Arfa Daily"

"Michael A. Terrell" <mike.terrell@earthlink.net> wrote in message
news:EfOdncPXBpejRQ7RnZ2dnUVZ_vadnZ2d@earthlink.com...
>
> Ron wrote:
>>
>> I rest my case milud
>
>
> So, the 'Preparation H' finally worked for you?
>
>
> --
Ah ! American humour. Right ? :-)

Arfa

== 8 of 11 ==
Date: Fri, Sep 17 2010 6:59 pm
From: "Arfa Daily"

"A. Baum" <50kiloton@net.not> wrote in message
news:pan.2010.09.17.15.48.07@50kilotons.net.not...
> On Fri, 17 Sep 2010 15:14:07 +0000, thanatoid wrote:
>
>> "A. Baum" <50kiloton@net.not> wrote in
>> news:pan.2010.09.17.12.10.43@50kilotons.net.not:
>>
>>> On Fri, 17 Sep 2010 03:30:00 +0000, thanatoid wrote:
>>>
>>>>> Look, you little fuck
>>>>
>>>> Is that the BEST you can do? C'mon! Work with me here!
>>>
>>> Yep that's the best that the Nebenzahl troll-bot imbecile can do. What
>>> did you expect from someone who let a simple 1/4 jack nut defeat him
>>> for days LMAO!
>>
>> You did make me laugh, but go easy on the guy. He seems OK. Not everyone
>> knows everything, especially people who post for help in groups like
>> this.
>
> He posts his know-it-all shit in other groups yet can't figure out that
> you really need to remove every last visible nut/screw/bolt/fastener
> before giving up. Sorry but I find him an idiot and not just someone who
> knows less than someone else.
>

And sometimes ones that are not visible. Just this week, I had a Sony
sort-of-portable thing on the bench. I took out every last obvious screw,
and no movement of the case halves at all. Then I discovered that the
speaker baffle was removable, and when removed, found two more screws behind
rubber bungs, When these were out, the case halves moved, but would still
not split. The final thing holding it together was the fact that the volume
pot was part of a board that remained in the rear case half, so its nut had
to come off. This fooled me for a few minutes, because I was expecting that
the control was part of the front board, and would come away with the front.

Arfa

== 9 of 11 ==
Date: Fri, Sep 17 2010 7:18 pm
From: "Michael A. Terrell"

Arfa Daily wrote:
>
> "Michael A. Terrell" <mike.terrell@earthlink.net> wrote in message
> news:EfOdncPXBpejRQ7RnZ2dnUVZ_vadnZ2d@earthlink.com...
> >
> > Ron wrote:
> >>
> >> I rest my case milud
> >
> >
> > So, the 'Preparation H' finally worked for you?
> >
> >
> > --
> Ah ! American humour. Right ? :-)

Or a hemorrhoid treatment commercial. ;-)

--
Politicians should only get paid if the budget is balanced, and there is
enough left over to pay them.

== 10 of 11 ==
Date: Fri, Sep 17 2010 7:46 pm
From: David Nebenzahl

On 9/17/2010 6:42 PM Arfa Daily spake thus:

> "David Nebenzahl" <nobody@but.us.chickens> wrote in message
> news:4c92c1a9$0$2406$822641b3@news.adtechcomputers.com...
>
>> Ackshooly, I've been saying for years that there are two types of
>> Americans distinguishable by their taste for Brit humor. One one
>> side we have the PBS-type humor, exemplified by "Are You Being
>> Served?" (which I despise); on the other are those who like Benny
>> Hill. I'm in the latter camp myself. (Hey, what's better than total
>> slapstick? Worked for Chaplin
>> ...)
>
> You really shouldn't dis 'Are You Being Served ?' It was an absolute
> classic up there with the likes of Fawlty Towers ... The double entendre
> with things like Mrs Slocombe's pussy, were really quite risque for British
> TV at the time. Although I used to really enjoy Benny Hill for its pure
> slapstick, the humour was much cruder than that of AYBS.

Well, not to belabor the point *too* much, but Fawlty Towers was
absolutely sublime compared to either one of those other two shows.

And I have to hand it to your Brits: there has never been *anything* on
television to equal "The Prisoner", and I doubt there will be in my
lifetime.

--
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)

== 11 of 11 ==
Date: Fri, Sep 17 2010 11:49 pm
From: "Klaatu"

"David Nebenzahl" <nobody@but.us.chickens> wrote in message
news:4c92c1a9$0$2406$822641b3@news.adtechcomputers.com...
> On 9/16/2010 6:03 PM Arfa Daily spake thus:
>
>> "Michael A. Terrell" <mike.terrell@earthlink.net> wrote in message
>>
>>> And you still don't get American humor. ;-)
>>
>> Wot ! You mean there is such a thing ... ? d:-}
>
> Nah, all our humor comes from the UK: Monty Python, Dame Edna, Eddy
> Izzard, Tracy Ullman, etc.
>
> Ackshooly, I've been saying for years that there are two types of
> Americans distinguishable by their taste for Brit humor. One one side we
> have the PBS-type humor, exemplified by "Are You Being Served?" (which I
> despise); on the other are those who like Benny Hill. I'm in the latter
> camp myself. (Hey, what's better than total slapstick? Worked for Chaplin
> ...)
>
>
> --
> 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)

And where do those who like "Absolutely Fabulous" fit in?

==============================================================================
TOPIC: HP 214B Pulse Generator repair question
http://groups.google.com/group/sci.electronics.repair/t/c99ffb38a259a6ba?hl=en
==============================================================================

== 1 of 1 ==
Date: Fri, Sep 17 2010 12:48 pm
From: Richard Rasker

Jim Yanik wrote:

> Richard Rasker <spamtrap@linetec.nl> wrote in
> news:4c8a502b$0$733$7ade8c0d@textreader.nntp.internl.net:
>
>> Bob Pownall wrote:
>>
>>> OK, I got some responses but I'm not sure how useful they are.
>>>
>>>
>> http://cgi.ebay.com/HP-214B-Operating-Service-Manual-COMPLETE-/37016210
>> 1455?pt=BI_Books_Manuals&hash=item562f616ccf
>>> (or http://tinyurl.com/3xp4sa8)
>>> is an eBay listing for the HP 214B Operating and Service Manual. It
>>> claims to be 147 pages, and thus more complete than the 123 page
>>> manual available for download from the Agilent website
>>
>> OK, thanks, I think I'll give this one a go. The equipment is
>> definitely worth it, and besides, half an hour of my time is rather
>> more expensive than this.
>>
>> Richard Rasker
>
> don't forget you can ASK QUESTIONS of the seller on the eBay site,-before-
> making a bid or buy.

OK, thanks for the tip , but I just ordered the manual -- and it did indeed
contain the parts list. I hope to get to work on it next week. And oh, the
fuse was 3 amps slow, and the end tubes were 7534 (E130L, nothing like the
PL519 at all).

So in all, I got the information I needed, and now I just hope that I won't
need to hunt down new end tubes ...

Anyway, thanks again, best regards,

Richard Rasker
--
http://www.linetec.nl

==============================================================================
TOPIC: SPAM - This is NOT a *forsale* group
http://groups.google.com/group/sci.electronics.repair/t/08b256a98db97e59?hl=en
==============================================================================

== 1 of 2 ==
Date: Fri, Sep 17 2010 2:22 pm
From: JeffM

Michael Kennedy wrote:
>[...]and the person isn't even a regular around here either
>
FYI: Your "newsreader" does a really horrible job of blockquoting.

It would be a lot less horrible
if you would apply *all* the patches available for it:
http://google.com/search?q=inurl:jain+%22+OE.doesn't.exactly.feature.the.most.intelligent.quoting.algorithm%22

== 2 of 2 ==
Date: Fri, Sep 17 2010 11:53 pm
From: "Michael Kennedy"

"JeffM" <jeffm_@email.com> wrote in message
news:921b8dff-e07c-4204-a066-8c60378f0adc@t3g2000vbb.googlegroups.com...
> Michael Kennedy wrote:
>>[...]and the person isn't even a regular around here either
>>
> FYI: Your "newsreader" does a really horrible job of blockquoting.
>
> It would be a lot less horrible
> if you would apply *all* the patches available for it:
> http://google.com/search?q=inurl:jain+%22+OE.doesn't.exactly.feature.the.most.intelligent.quoting.algorithm%22

Thats my work pc.. I couldnt figure out what it was doing.. First it was in
HTML.. Anyhow I havent done much to that pc since its in Japanese.

==============================================================================
TOPIC: Advent Powered Loudspeaker and counterfeit transistors
http://groups.google.com/group/sci.electronics.repair/t/978224ae2080569f?hl=en
==============================================================================

== 1 of 1 ==
Date: Fri, Sep 17 2010 5:14 pm
From: "Wild_Bill"

Kudos to you Mark, and others, that are inquisitive enough to closely
examine faulty/counterfeit parts, and report the incidents.

The previous instances of fake components that I've heard about were
epoxy-bodied parts.. from the early PC cache-RAM that was just epoxy and
pins, to power transistors and audio power amp modules more recently.

So much for global trade. As distributors source components, they're rarely
certain about the quality anymore, and possibly more concerned with only the
cost difference of various sources.

I think the chances of finding fake components is more likely when they're
purchased from a mega-huge supplier like present-day MCM.
Fakes from smaller suppliers can happen too, because the fakes seem to be
getting into numerous supply chains.

Everything has changed with China as a mainstream source of almost
everything. Another aspect might be that there is always an abundance of
surplus and transporting it globally is fairly inexpensive.
So what does a guy do with 3 million excess empty TO-3 cases? Scrap value
might not be very much.

I don't recall hearing of fake components being found in ECG/NTE packaging.
As I'm sure you know, the cost difference isn't because of the individual
packaging in the plastic bag.

I've purchased some hardware parts (coaxial power connectors) from some
China sellers on eBay recently, and the poor quality is surprising.
The difference in quality is far below that of (RS) that shack store, who's
parts aren't anywhere near high quality (but some of their products are from
Taiwan, not China).

Chinese manufacturers can produce decent quality parts, but they don't need
to when their parts are found in supply chains (not that I'm saying that
eBay is a supply chain for reliable parts).

--
Cheers,
WB
.............

"Mark Zacharias" <mark_zacharias@sbcglobal.net> wrote in message
news:4c93500b$0$10271$c3e8da3@news.astraweb.com...
> First, thanks to Chuck Hart for mailing me the schematics.
>
> OK, well, there's this bi-amped powered loudspeaker. The tweeter amp is
> blown.
> The outputs are 2N6284 and 2N6287 Darlington TO-3 package transistors.
> Pretty obscure these days. The schematic info also included NTE subs but
> those were nearly 20.00 each, with no guarantee in my mind as to quality,
> etc.
>
> So I ordered the 2N numbers from MCM. More like 5.00 each and I've had
> pretty good luck with MCM lately. When I received them, they were
> mismatched
> vendor markings, and one looked like cheap crap so I tested them right
> away.
> Actually, the one that looked like crap was OK, but the "2N6287" with
> Thomson ST markings was SHORTED emitter-base right out of the chute. I
> called MCM - "Oh, gee we're sorry" and they sent me another, no need to
> return the bad one.
> So I cut it open. It wasn't even a Darlington, just a single emitter base
> junction and the die was only 2mm instead of 5mm. There was a visible gash
> across the die, so obviously the thing was never tested in manufacture.
>
> So I receive the replacement. I test it, and this one is OPEN emitter
> base.
> Once again I call MCM, got credit and no need to return them, so I cut
> this
> one open as well. Here's the fun part:
>
> The transistor case was EMPTY. No die, no leads, just an empty case. I've
> emailed pics to MCM.
>
> With a little more research I was able to get the Onsemi MJ versions from
> Allied, so all is well, and the repair worked out OK.
>
> Those on the group using a binary server should see the pics. Anyone else
> interested, I can email them to you.
>
> Mark Z.
>

==============================================================================
TOPIC: Cable box is making a ticking noise
http://groups.google.com/group/sci.electronics.repair/t/be39a9de968f64c0?hl=en
==============================================================================

== 1 of 1 ==
Date: Fri, Sep 17 2010 5:32 pm
From: mike@nowhere.nope

On Mon, 13 Sep 2010 19:15:46 -0400, mike@nowhere.nope wrote:

>Have a Scientific Atlanta Explorer 3200 cable box that yesterday
>started making a ticking noise when it's on. The ticking noise is
>coming from the box itself, not the TV speakers. If I remove the
>coaxial cable that's coming from outside the noise goes away, screw
>the cable back in the noise comes back. No problem with the TV
>picture or sound. I presume it's a component inside the box that's
>dying, and when it does picture and sound will die as well. Anyone
>have any ideas what could be causing this?
>
>And no, I don't think the box is about to explode. At least I hope
>it's not. :)

I always hate it when someone posts a message asking for help, gets
replies and then doesn't bother to post what happened. Well, that
someone isn't me...
I gave up on that Explorer 3200 cable box. So I've re-connected the
box I'd been using before I bought the 3200 (it's an Explorer 940 - no
display or buttons on the front, and cheaply made - the box itself is
plastic - it's a piece of crap, but it works and doesn't tick...).
Thanks to everyone for trying to help.

==============================================================================
TOPIC: Sony KPR46CX10 tracking problem
http://groups.google.com/group/sci.electronics.repair/t/4919fbb25549d24c?hl=en
==============================================================================

== 1 of 1 ==
Date: Fri, Sep 17 2010 8:20 pm
From: stratus46@yahoo.com

On Sep 16, 5:53 pm, Jeff <Kahlu...@aol.com> wrote:
> Hello,
>
>      I have a friend that has one of these. She says that from time to
> time the picture will scroll. So I know that this is a horizontal
> tracking issue. When I worked on tv's years ago they had a knob that
> you could adjust them. But that went away years ago.
> Is their still a way to make a minor adjustment. She said that
> sometimes it will go a weekend with out a problem and sometimes it
> comes and goes. She also told me that it never did that when the Wii
> was connected to the tv.
>
> Any Ideas...
>
> Thank you,
> Jeff

What do you mean by 'scroll'? What is 'horizontal tracking'? It
appears this is a CRT based rear projector. Do you think it's worth
the bother to repair? I would bet there are dried out electrolytic
capacitors in there likely disrupting the sync processing but this TV
is not the place to learn about electronics repair. The parts cost
next to nothing but the skill and tools to do the job are pretty
serious. I ask again. Is it worth the bother?

G²

==============================================================================
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http://groups.google.com/group/sci.electronics.repair/t/b815229a86538909?hl=en
==============================================================================

== 1 of 1 ==
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