sci.electronics.repair@googlegroups.com

Today's topics:

* Today's lead free story, and a "Mr Cook" moment ... - 2 messages, 2 authors
http://groups.google.com/group/sci.electronics.repair/t/8924a25c81bfe18e?hl=en
* RCA P60928 PTK195 Chassis no power - 9 messages, 3 authors
http://groups.google.com/group/sci.electronics.repair/t/0e7ca98063672b91?hl=en
* Microwave Oven: Noisy, shuts down sometimes? - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/8dc6fa75132215e7?hl=en
* help needed with nikko 230 distortion - 3 messages, 2 authors
http://groups.google.com/group/sci.electronics.repair/t/e502374142af0b1b?hl=en
* Technics SL-1350 tonearm does not drop vertically. - 3 messages, 3 authors
http://groups.google.com/group/sci.electronics.repair/t/275776b57680ec4f?hl=en
* 2010 HOT UPDATES - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/1f2a40d1559ead9e?hl=en
* Looking for Hitachi hybrid module - 3 messages, 2 authors
http://groups.google.com/group/sci.electronics.repair/t/6708cf71ea7b9ed4?hl=en
* InovaBrasil - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/2f7505014be9bc73?hl=en
* Schematic for Nutone IK-25 intercom - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/0c147f8059c5a160?hl=en
* Need base diagram for 140NB4/CT496 Sony CRT - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/a476e0a9943c56d7?hl=en

==============================================================================
TOPIC: Today's lead free story, and a "Mr Cook" moment ...
http://groups.google.com/group/sci.electronics.repair/t/8924a25c81bfe18e?hl=en
==============================================================================

== 1 of 2 ==
Date: Fri, Oct 1 2010 7:58 pm
From: "Michael A. Terrell"

tm wrote:
>
> "Michael A. Terrell" <mike.terrell@earthlink.net> wrote in message
> news:xK2dnZIVAb4b9zvRnZ2dnUVZ_rmdnZ2d@earthlink.com...
> >
> > William Sommerwerck wrote:
> >>
> >> > There are traces of lead in some plastics used to make wire.
> >> > I think it is part of the plasticiser needed to make the insulation
> >> > flexible.
> >>
> >> Right. The cord on the tuner/remote for my Sony Discman has such a
> >> warning.
> >>
> >> I'm all in favor in "getting the lead out", especially in products that
> >> kids
> >> come in contact with. Ideally, warnings should be based on the likely
> >> exposure, not the mere presence of lead (or anything else). In practice,
> >> it's easier simply to condemn everything.
> >>
> >> Considering that the blender's cord would rarely be touched (and then
> >> only
> >> at the plug end), there doesn't seem much point.
> >>
> >> > California isn't know as the land of fruits & nuts for nothing. :(
> >>
> >> Watch it...
> >
> >
> > I was talking about their politicians. :)
> >
>
> That were put there by the, wait for it, "fruits and nuts".
>
> Who else would vote for pelosi.

Someone voted for her? Then they didn't to spend all that money on
ACORN, after all.

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

== 2 of 2 ==
Date: Sat, Oct 2 2010 3:42 am
From: Meat Plow

On Fri, 01 Oct 2010 10:07:18 -0400, Michael A. Terrell wrote:

> George Herold wrote:
>>
>> My wife bought another kitchen appliance (hand blender) the other day.
>> Attached to the power cord was a warning... which I will paraphrase.
>> "Warning this power cord contains lead. Lead is known to the State of
>> California to cause cancer and birth defects. Wash your hands after
>> using." My nine year old son dutifully washed his hands. (He wanted to
>> play with the new gadget.) I had a mini-rant in the kitchen.
>>
>> This is wrong in so many ways it just boggles the mind.
>
>
> There are traces of lead in some plastics used to make wire. I think
> it is part of the plasticiser needed to make the insulation flexible.
>
> California isn't know as the land of fruits & nuts for nothing. :(

Aint that the troof.

--
Live Fast, Die Young and Leave a Pretty Corpse

==============================================================================
TOPIC: RCA P60928 PTK195 Chassis no power
http://groups.google.com/group/sci.electronics.repair/t/0e7ca98063672b91?hl=en
==============================================================================

== 1 of 9 ==
Date: Sat, Oct 2 2010 3:44 am
From: Meat Plow

On Fri, 01 Oct 2010 07:55:40 -0700, Tmachcinsk@aol.com wrote:

> I had a power surge that killed my TV and microwave. PTK 195 chassis. I
> get no picture no sound no attempt to power on. No clicking. Nothing.
> Main fuse is ok power is ok just past the fuse. Any ideas. Thanks Ted

My ideas depend on your experience in electronics repairs.

--
Live Fast, Die Young and Leave a Pretty Corpse

== 2 of 9 ==
Date: Sat, Oct 2 2010 5:46 am
From: "Tmachcinsk@aol.com"

Thanks John. I have no problem going to component level. I do a lot of
work on arcade game monitors. I have not realy worked on projections.
I do not know where some of the components are located on the
projection. You are correct about the flyback as I have replaced that
years ago otherwise no other problems with the tv. Thanks that gives
me a good starting point. Ted

== 3 of 9 ==
Date: Sat, Oct 2 2010 5:52 am
From: "Tmachcinsk@aol.com"

OK looks like the 5 volts is good. Where is the micro reset circut
located. Thanks Ted

== 4 of 9 ==
Date: Sat, Oct 2 2010 7:20 am
From: Meat Plow

On Sat, 02 Oct 2010 05:52:08 -0700, Tmachcinsk@aol.com wrote:

> OK looks like the 5 volts is good. Where is the micro reset circut
> located. Thanks Ted

The micro/eeprom reset is a service function.

--
Live Fast, Die Young and Leave a Pretty Corpse

== 5 of 9 ==
Date: Sat, Oct 2 2010 12:16 pm
From: "Tmachcinsk@aol.com"

ok so how do I get into service mode if I cant power on the set. Is
there a service switch on the pcb somewhere. Thanks Ted

== 6 of 9 ==
Date: Sat, Oct 2 2010 1:00 pm
From: Meat Plow

On Sat, 02 Oct 2010 12:16:08 -0700, Tmachcinsk@aol.com wrote:

> ok so how do I get into service mode if I cant power on the set. Is
> there a service switch on the pcb somewhere. Thanks Ted

Hey, have you tried to get some service literature on the 195 chassis?
Might want to wait around for PlainBill to chime back in. He works on a
lot more of these than I. I switched my service genre to vintage guitar
amps and other pro sound/studio equipment a while back.

You've already replaced a flyback in this thing so obviously you know
something about them. My experience is limited to convergence amps, a
common failure in some sets. But in my youth I worked for a multi-brand
warranty center and was always handed the tough dog sets.

--
Live Fast, Die Young and Leave a Pretty Corpse

== 7 of 9 ==
Date: Sat, Oct 2 2010 1:05 pm
From: John-Del

On Oct 2, 8:52 am, "Tmachci...@aol.com" <Tmachci...@aol.com> wrote:
> OK looks like the 5 volts is good. Where is the micro reset circut
> located. Thanks Ted

You said there is no power on attempt (no clicking ). The 195 is very
quiet when attempting a start as it has no relays. In a quiet room,
start the TV from the remote listening carefully in the back of the
TV. If you hear anything (chirp), the system control is okay, at
least the basic stuff. If it's truly dead, check the micro reset
voltage: On the main micro U13101, check pin 51 for 5 volts.

== 8 of 9 ==
Date: Sat, Oct 2 2010 2:23 pm
From: "Tmachcinsk@aol.com"

OK I have 5 volts on pin 51. I know its very quite but I dont hear
anything at all. Are you thinking U13101 may be bad? Thanks Ted

== 9 of 9 ==
Date: Sat, Oct 2 2010 4:05 pm
From: "Tmachcinsk@aol.com"

OK I have even put an amp meter on the line comming in and I am
getting around 300 milli amps when pluged in but no change at all when
I hit the remote. I get a slight chirp when I first plug it in but no
change again with the remote. Thanks Ted

==============================================================================
TOPIC: Microwave Oven: Noisy, shuts down sometimes?
http://groups.google.com/group/sci.electronics.repair/t/8dc6fa75132215e7?hl=en
==============================================================================

== 1 of 1 ==
Date: Sat, Oct 2 2010 3:51 am
From: Meat Plow

On Fri, 01 Oct 2010 11:03:05 -0700, William Sommerwerck wrote:

>>>> One source of noise can be the windings of the transformer rattling
>>>> against one another due to the serious currents.
>
>>> Would the amperage drawn by the lamp in the oven be considered a
>>> "lighter" current?
>
>> Anything is possible. A supermarket near me has free-range sausages for
>> sale.
>
> I can just see the pork-boys roundin' 'em up...

Watch it...

--
Live Fast, Die Young and Leave a Pretty Corpse

==============================================================================
TOPIC: help needed with nikko 230 distortion
http://groups.google.com/group/sci.electronics.repair/t/e502374142af0b1b?hl=en
==============================================================================

== 1 of 3 ==
Date: Sat, Oct 2 2010 4:40 am
From: "Mark Zacharias"

"james moffat" <kallispamta@shaw.ca> wrote in message
news:f3uca61pr4k5h2nbrl2mn0bec2vbv7v32v@4ax.com...
>
> HI all!
> I have a nikko alpha 230 amp that is distorting one channel <just
> enough to annoy my ears>
> and was wondering if anyone has any advise on what to check for / and
> or replace to get rid of the noise.
> If it makes any difference to the diagnosis the music is fine at the
> headphones, and is only distorted on the left channel.
> I have enough knowledge to make me dangerous, and some test
> equipment<no o-scope>
> so if someone is willing to help me learn a little more please blast
> away.
> thanks for your time
> remove the spam to e-mail me.
> james
> If you really want to talk to me - just eat the spam

Could be a bias problem, but if you aren't good with amps it would be pretty
easy to blow up the thing and cause a much more expensive repair.
That said, could be a bad bias transistor, flaky bias pot, open resistor,
etc.
Unless there were a common problem on this model which someone here just
happens to know about (and Nikko's aren't the most common amps by a long
shot) then real troubleshooting by a qualified technician is your best bet.

Mark Z.

Mark Z.

== 2 of 3 ==
Date: Sat, Oct 2 2010 1:59 pm
From: james moffat

On Sat, 2 Oct 2010 02:01:07 +0100, "Arfa Daily"
<arfa.daily@ntlworld.com> wrote:

>
>
>"james moffat" <kallispamta@shaw.ca> wrote in message
>news:f3uca61pr4k5h2nbrl2mn0bec2vbv7v32v@4ax.com...
>>
>> HI all!
>> I have a nikko alpha 230 amp that is distorting one channel <just
>> enough to annoy my ears>
>> and was wondering if anyone has any advise on what to check for / and
>> or replace to get rid of the noise.
>> If it makes any difference to the diagnosis the music is fine at the
>> headphones, and is only distorted on the left channel.
>> I have enough knowledge to make me dangerous, and some test
>> equipment<no o-scope>
>> so if someone is willing to help me learn a little more please blast
>> away.
>> thanks for your time
>> remove the spam to e-mail me.
>> james
>> If you really want to talk to me - just eat the spam
>
>
>
>I suppose that you've done the obvious, and swapped the speakers between
>channels ?
>
>Arfa

swapped the speakers, changed the source , and used different wires
to make sure that it was in fact the amp the was the cause. the left
speakers on both the a and b outputs have the same distortion....
kinda like gargling......
thanks for your time.
me
If you really want to talk to me - just eat the spam

== 3 of 3 ==
Date: Sat, Oct 2 2010 2:02 pm
From: james moffat

On Sat, 2 Oct 2010 06:40:06 -0500, "Mark Zacharias"
<mark_zacharias@sbcglobal.net> wrote:

>"james moffat" <kallispamta@shaw.ca> wrote in message
>news:f3uca61pr4k5h2nbrl2mn0bec2vbv7v32v@4ax.com...
>>
>> HI all!
>> I have a nikko alpha 230 amp that is distorting one channel <just
>> enough to annoy my ears>
>> and was wondering if anyone has any advise on what to check for / and
>> or replace to get rid of the noise.
>> If it makes any difference to the diagnosis the music is fine at the
>> headphones, and is only distorted on the left channel.
>> I have enough knowledge to make me dangerous, and some test
>> equipment<no o-scope>
>> so if someone is willing to help me learn a little more please blast
>> away.
>> thanks for your time
>> remove the spam to e-mail me.
>> james
>> If you really want to talk to me - just eat the spam
>
>
>Could be a bias problem, but if you aren't good with amps it would be pretty
>easy to blow up the thing and cause a much more expensive repair.
>That said, could be a bad bias transistor, flaky bias pot, open resistor,
>etc.
>Unless there were a common problem on this model which someone here just
>happens to know about (and Nikko's aren't the most common amps by a long
>shot) then real troubleshooting by a qualified technician is your best bet.
>
>Mark Z.
>
>Mark Z.

the amp was free... so I am treating it as a learning experience
rather than "I must get it working" . If I am unable to repair it then
it will simply be tossed.
thanks for the advise , I will look into that.
me
If you really want to talk to me - just eat the spam

==============================================================================
TOPIC: Technics SL-1350 tonearm does not drop vertically.
http://groups.google.com/group/sci.electronics.repair/t/275776b57680ec4f?hl=en
==============================================================================

== 1 of 3 ==
Date: Sat, Oct 2 2010 6:39 am
From: josephkk <>

On Mon, 27 Sep 2010 02:00:10 +0100, "Arfa Daily" <arfa.daily@ntlworld.com>
wrote:

>
>
>"David Farber" <farberbear.unspam@aol.com> wrote in message
>news:i7opr8$klo$1@news.eternal-september.org...
>>
>> "William Sommerwerck" <grizzledgeezer@comcast.net> wrote in message
>> news:i7oea7$djo$1@news.eternal-september.org...
>>> I'm confused.
>>>
>>> While the arm is being lowered, it should be in contact (somewhere,
>>> above-
>>> or below-deck) with the lifting mechanism, right? Should there not be
>>> sufficient friction between the arm and the lifter to keep the
>>> anti-skating
>>> force from moving the arm?
>>>
>>>
>>
>> Yes, that is the crux of the problem. The rubber portion of the arm lifter
>> which contacts the tone arm seems to have lost its grip. There isn't
>> enough frictional force to counteract the anti-skating force.
>>
>> Thanks for your reply.
>> --
>> David Farber
>> Los Osos, CA
>>
>>
>
>A thin piece of rubber such as from a balloon maybe, superglued to the
>underside of the tonearm above the lifter ?? A very slight 'dent' filed into
>the lifter perhaps ??
>
>Arfa

Superglue (cyanoacrilate) is rather brittle and not recommended for
bonding resilient surfaces. Try any flexible glue, such as vinyl cement.

== 2 of 3 ==
Date: Sat, Oct 2 2010 6:45 am
From: josephkk

On Wed, 29 Sep 2010 07:25:13 -0700, "William Sommerwerck"
<grizzledgeezer@comcast.net> wrote:

>> Are there even Blu-ray audio discs being made?
>
>Absolutely. Both 2L and Naxos have issued them. The appeal is the
>availability of extremely high fidelity multi-channel sound, in a format
>less-likely to be abandoned than SACD. The 2L recordings, in particular,
>have exceptionally high-quality sound.
>

I do not think SACD is going away any time soon, i can master them on my
home linux box. It is not missing from the MSWin world either.

== 3 of 3 ==
Date: Sat, Oct 2 2010 7:20 am
From: "William Sommerwerck"

>>> Are there even Blu-ray audio discs being made?

>> Absolutely. Both 2L and Naxos have issued them. The appeal
>> is the availability of extremely high fidelity multi-channel sound,
>> in a format less-likely to be abandoned than SACD. The 2L
>> recordings, in particular, have exceptionally high-quality sound.

> I do not think SACD is going away any time soon, I can master
> them on my home linux box. It is not missing from the MSWin
> world either.

Your ability to master SACDs has nothing to do with the music industry.

We don't know how long SACD will last. Some audiophiles consider it the
best-possible currently available sound, but its multi-channel capability is
not only of no interest, but anathema to a large percentage of audiophiles
who claim to want good sound quality, but persistently reject the industry's
attempts to provide it. In a world where too many listeners consider
phonograph records the height of sound quality, there are no guarantees.

Harmonia-Mundi has almost completely stopped new SACD releases (even of what
are probably multi-ch masters), and is not re-pressing older ones. (This is
not altogether surprising. By not adopting a single-inventory system, H-M
effectively shot itself in the foot.)

Other companies, such as BIS, PentaTone, and several orchestra labels, have
been successful with SACD.

==============================================================================
TOPIC: 2010 HOT UPDATES
http://groups.google.com/group/sci.electronics.repair/t/1f2a40d1559ead9e?hl=en
==============================================================================

== 1 of 1 ==
Date: Sat, Oct 2 2010 9:59 am
From: SAILAJA LOVES U

AMISHAPATEL HOT BOOBS

http://babes-devi.blogspot.com/2010/07/amishpatel-latest-photos.html

ARCHANA UNSEENED EXPOSING PHOTOS

http://babes-devi.blogspot.com/2010/07/archana-unseened-photos.html

KATRINA KAIF HOT SEXY PHOTOS

http://babes-devi.blogspot.com/2010/07/katrina-sexy-looking-photos.html

THISHA HOT WET PHOTOS

http://babes-devi.blogspot.com/2010/06/thrisha-hot-wet-photos.html

SEXY CHARMI IN A BATHROOM

http://babes-devi.blogspot.com/2010/06/charmi-in-bath.html

KAJALAGARWAL IN A ROMANTIC FEEL

http://babes-devi.blogspot.com/2010/06/kajal-hot-photos.html

NAMITHA IN A BEACH

http://babes-devi.blogspot.com/2010/06/nayagarala-namitha.html

==============================================================================
TOPIC: Looking for Hitachi hybrid module
http://groups.google.com/group/sci.electronics.repair/t/6708cf71ea7b9ed4?hl=en
==============================================================================

== 1 of 3 ==
Date: Sat, Oct 2 2010 12:39 pm
From: "Antonio Vernucci"

Does any one know where to find the Hitachi hybrid circuit PF0310A, which is the
RF power driver for the Yaesu FT-847 transceiver?

On the Internet I (perhaps) only found a PF0310 (without the A), but it is
somewhat different.

Thanks & regards.

Tony I0JX
Rome, Italy

== 2 of 3 ==
Date: Sat, Oct 2 2010 1:14 pm
From: Meat Plow

On Sat, 02 Oct 2010 21:39:08 +0200, Antonio Vernucci wrote:

> Does any one know where to find the Hitachi hybrid circuit PF0310A,
> which is the RF power driver for the Yaesu FT-847 transceiver?
>
> On the Internet I (perhaps) only found a PF0310 (without the A), but it
> is somewhat different.
>
> Thanks & regards.
>
> Tony I0JX
> Rome, Italy

Well in the USA if I need an RF part I look at http://www.rfparts.com/.

--
Live Fast, Die Young and Leave a Pretty Corpse

== 3 of 3 ==
Date: Sat, Oct 2 2010 2:07 pm
From: "Antonio Vernucci"

I already tried there but they only have the PF0310 without the A. It requires a
higher voltage on the driver stage with respect to the PF0310A.

Thanks

Tony

"Meat Plow" <mhywatt@yahoo.com> ha scritto nel messaggio
news:pan.2010.10.02.20.13.49@lmao.lol.lol...
> On Sat, 02 Oct 2010 21:39:08 +0200, Antonio Vernucci wrote:
>
>> Does any one know where to find the Hitachi hybrid circuit PF0310A,
>> which is the RF power driver for the Yaesu FT-847 transceiver?
>>
>> On the Internet I (perhaps) only found a PF0310 (without the A), but it
>> is somewhat different.
>>
>> Thanks & regards.
>>
>> Tony I0JX
>> Rome, Italy
>
> Well in the USA if I need an RF part I look at http://www.rfparts.com/.
>
>
>
> --
> Live Fast, Die Young and Leave a Pretty Corpse

==============================================================================
TOPIC: InovaBrasil
http://groups.google.com/group/sci.electronics.repair/t/2f7505014be9bc73?hl=en
==============================================================================

== 1 of 1 ==
Date: Sat, Oct 2 2010 1:55 pm
From: Rogerio

As mais lidas da semana em http://inovabrasil.blogspot.com

1. UFRJ: Pesquisadores descobrem possível tratamento para Alzheimer
2. MCT e BID: Acordo beneficiará incubadoras, micro e pequenas
empresas
3. EUA tem interesse em manter cooperação bilateral com o Brasil
4. Curso redação científica on-line e gratuíto
5. Canadá: Programa Vanier oferece bolsas de pós-graduação
6. Distrito Federal ganha Universidade Regional de Brasília e
Entorno - URBE
7. CNPq: Edital contempla avaliação de programas vinculados ao MDS
8. Fapemig: R$25 milhões em 3 novos editais
9. Revolta Paulista: Revolução de 1924 ganha exposição on-line
10. Saem os vencedores do Prêmio Nacional do Empreendedorismo
Inovador
11. Estudo analisa como alunos com desvantagens econômicas ingressam
e permanecem na USP
12. Restrição alimentar e estresse durante a gestação podem resultar
em prole com órgãos menores
13. Unifesp desenvolve técnicas de recuperação da superfície dos
olhos
14. CNPq : inscrições abertas para habilitação de Organização Rep.
Pesquisa Clínica - ORCP
15. Finep: inscrições abertas para programa de inovação entre Brasil
e França
16. Gargalos na Lei Estadual de Inovação de São Paulo
17. A importância das novas técnicas de prospecção de moléculas para
a produção de alimentos
18. Ompi lança o Wipo Lex que disponibiliza leis e tratados sobre PI
- Propriedade Intelectual
19. Os perigos de só comer alimentos crus - "Life Food"
20. SECTES: Minas inaugurará parque tecnológico no próximo mês
21. Cidade Cantada – Educação e experiência estética
22. Incubadora IFES: Workshop de Inovação e Propriedade Industrial
23. Instituto de Estudos Avançados de Lucca (Itália) abre inscrições
para doutorado
24. 1956: instalado o primeiro cabo telefônico através do Atlântico
25. ABM: 14º Seminário de Automação de Processos
26. Brasil e Coreia: acordo para promoção da propriedade industrial
27. Contaminantes encontrados na água de abastecimento afetam a
saúde
28. Energia para o Desenvolvimento Sustentável no Século 21
29. L'Oréal - ABC - Unesco : Programa Mulheres na Ciência premia
pesquisadoras
30. Pesquisadores mapeiam os transcriptomas de três tipos de
diabetes e demonstram que eles são diferentes

Assine, apóie e divulgue o InovaBrasil.

Assinaturas Gratuítas : inovabrasil.assina@gmail.com
Twitter: @Inovabrasil2010

==============================================================================
TOPIC: Schematic for Nutone IK-25 intercom
http://groups.google.com/group/sci.electronics.repair/t/0c147f8059c5a160?hl=en
==============================================================================

== 1 of 1 ==
Date: Sat, Oct 2 2010 4:59 pm
From: Todescos

Does anyone have a schematic for the Nutone IK-25 door intercom. The
product is not sold by Nutone anymore, however, there are millions of
them in existence. And, they are still being sold by many companies
that have existing stock. Nutone told me that they don't even have a
schematic. I'm not sure I believe that, but they did say they
purchase the unit as-is. I'd like to make a few changes in the way it
operates. I'd like the indoor station to indoor station to be non-
private, just like it is to the door station. Any ideas?

==============================================================================
TOPIC: Need base diagram for 140NB4/CT496 Sony CRT
http://groups.google.com/group/sci.electronics.repair/t/a476e0a9943c56d7?hl=en
==============================================================================

== 1 of 1 ==
Date: Sat, Oct 2 2010 5:00 pm
From: "Brenda Ann"

I need the above base diagram so that I can convert a Sony 5-307W. The set
has a 140CB4 CRT in it, which is dead. I have a brand new CT496 CRT, which
has a different base (at least the heater pins are 1 and 3, rather than 3
and 4 on the 140CB4).

TIA

Brenda Ann

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