Digest for sci.electronics.repair@googlegroups.com - 19 updates in 10 topics

"humbled survivor" <nobody@noreply.com>: Jan 13 11:18AM -0500

There's a couple of holes on the board to put an electrolytic capacitor.
Beside one of the holes is a white dot. Is that where the positive of the
capacitor goes?
N_Cook <diverse@tcp.co.uk>: Jan 13 04:35PM

On 13/01/2015 16:18, humbled survivor wrote:
> There's a couple of holes on the board to put an electrolytic capacitor.
> Beside one of the holes is a white dot. Is that where the positive of
> the capacitor goes?
 
No standard on that, compare with other caps/dots on the same pcb
Huge <Huge@nowhere.much.invalid>: Jan 05 10:27PM

>> very poor, and have switched back to incandescents in a few places (I
>> imagine we're about 30% CFL, 30% halogen and 30% GLS (incandescent)) now.
 
> 10% sunlight?
 
*grin*
 
 
--
Today is Setting Orange, the 5th day of Chaos in the YOLD 3181
Celebrate Mungday
I don't have an attitude problem. If you have a problem with my attitude,
that's your problem.
bleachbot <bleachbot@httrack.com>: Jan 13 02:50PM +0100

bv4bv4bv4@gmail.com: Jan 13 05:50AM -0800

Muhammad (saws): A Role Model for a New Millennium
 
 
The human need for role models
 
Have you ever heard of Moses, Jesus, Confucius, Krishna or the Buddha? How about Gandhi, Mother Theresa or Martin Luther King? If you live in the West, there's a good chance that you know a bit about these people and their accomplishments. In man's eternal search for immortality and meaning, many leaders and heroes, both true and false, have made their appearance on the world stage. The respect and reverence shown to such figures among people of every nationality, in every age, points to a deep human need to believe in someone greater than oneself, in an attempt to transcend the confines of one's own limited existence. We see this theme recur in world myths, legends, hero stories, and in the idealisation of people who have been raised by their followers to superhuman or godly status.

Most educated people today are sceptics,
 
and view such stories as the charming remnants of a simpler age. And with globalisation and the steady stream of new religions and ideologies that people are exposed to, it may be hard to know what to believe. Some find it easier to ignore spiritual questions altogether, focusing instead on their relationships, careers and 'getting ahead'. Yet we know that excessive materialism stifles the mind and spirit; despite technological advances, the deep yearning to believe in a Higher Power, true leadership, and an ultimate purpose in life remains. In this day and age, who can be trusted as a guide in both spiritual and worldly matters?

There is one leader,
 
still largely unknown to the West, who is an extraordinary role model that people of all backgrounds can relate to: the Prophet Muhammad. The details of Muhammad's remarkable life have been carefully preserved and have been subjected to the scrutiny of historians, east and west. In contrast to others who have achieved renown for their accomplishments in a limited sphere of activity, Muhammad's achievements span all major areas of life. The historian Michael H. Hart wrote:
My choice of Muhammad to lead the list of the world's most influential persons may surprise some readers and be questioned by others, but he was the only man in history who was supremely successful on both the religious and secular levels. Hart, Michael, The 100: A Ranking of the Most Influential Persons in History.

Why does the average European or American

know so little about a man whose life was so exceptional? Irrational fears and negative propaganda, dating back to the Crusades and exaggerated by the media, have created a 'mental block' for many people against all things Arab or Islamic, and the two terms are often mistakenly confused. As we enter the age of the global village, is it not time for those who pride themselves on being unprejudiced, independent thinkers to put aside these mental relics from a bygone era? We invite you to take a few minutes to explore a new understanding of religious leadership, and in so doing, to catch a glimpse of a man who is loved by one-fifth of the people on this planet.

The concept of Prophethood in Islam
 
For a Muslim, a Prophet does not primarily imply someone able to foretell the future - although most of Muhammad's predictions have already been fulfilled in astonishing ways - but a man sent by God to call people to repent, have faith, and dedicate their lives to doing good, thereby helping them rediscover the purpose for which they were created. Prophets are not considered to be Divine, and are not prayed to or worshipped - though they were men of outstanding character and spirituality who were protected from committing sins, performed miracles, received revelation and communed with God. Islam teaches that God is One, without partner or associate; no human being can share in any of the qualities that are unique to the Intelligent Creator and Sustainer of our vast and complex universe. Muhammad was no more than God's honoured servant and Messenger, yet he embodied the best of human potential, and that is what continues to make him so appealing and accessible today. Last in a line of Prophets and Messengers sent by God to all people on earth - including Noah, Abraham, Moses and Jesus - who effected the large-scale transformation of individuals and society, Muhammad was unsurpassed as teacher and guide. Speaking of his own role as the last true Prophet before Judgement Day, he said:
'The parable of me in relation to the Prophets who came before me is that of a man who built a house beautifully and well, except that one brick in its corner was missing. The people went around it and wondered at its beauty, but said: "If only that brick were put in its place!" I am that brick, and I am the last of the Prophets.'

Muhammad's personal life

Muhammad was born in 570 AD to a noble family of Makkah, and was a descendant of the Prophet Abraham. Orphaned at six, Muhammad was a thoughtful youth who worked as a shepherd and helped his uncle with the trade caravans. As a teenager he rejected the immoral customs of his people, who had become steeped in idolatry, and joined a chivalrous order, earning the nickname 'The Trustworthy'. At age 25 he found employment with a wealthy widow of 40 named Khadijah, managing her business. Impressed by his honesty and character, Khadijah proposed marriage and he accepted. Despite their age difference, they were happily married for 25 years, and were blessed with six children. After Khadijah's death Muhammad married several women for political and humanitarian reasons, as was expected of a man of his position; all but one were widows and divorcees. He was a loving and considerate husband and father, and his family was devoted to him despite his voluntary poverty, for he put into practice his own advice, 'the best of you is the one who is best to his own family.'

Muhammad, the Prophet

Muhammad received his first revelation from God at 40, through the Angel Gabriel. He continued to receive revelations for 23 years, on topics ranging from the Oneness of God and His wondrous handiwork, to stories of earlier prophets, morality and ethics, and life after death. These revelations became collectively known as the Qur'an, and are considered by Muslims to be the literal word of God; the Prophet's own words were collected separately. Muhammad's call to monotheism and social reform was heavily opposed by the Makkan elite; after enduring thirteen years of intense persecution, he and his followers were invited to relocate to Madinah, a town to the north that had been torn apart by generations of intertribal warfare. Muhammad successfully settled their differences and forged a bond of brotherhood between the two warring factions, as well as between the locals and the new emigrants. For Arab tribal society, this was an amazing accomplishment. The early Muslims learned to implement the golden rule under the Prophet's tutelage: 'No one truly believes until he desires for his brother what he desires for himself.'

Muhammad's legacy: the Madinan model

For Muhammad, religion was not a matter of personal conviction alone but a complete way of life, and Madinah flourished under his leadership. The Madinan model of government, based on justice, respect for human dignity and God-consciousness, became the template to which Muslims have looked for guidance and inspiration ever since. The Prophet drew up the world's first constitution in which the rights of religious minorities were protected, and entered into treaties and alliances with neighbouring tribes. He sent letters to the rulers of the Persians, Egyptians, Abyssinians and Byzantines, announcing his message of pure monotheism and inviting them to accept Islam. For the first time in history, women, children, orphans, foreigners and slaves were granted extensive rights and protection. Many of the Prophet's concerns seem surprisingly 'modern': he condemned racism and nationalism, saying 'there is no superiority of an Arab over a non-Arab, or a white man over a black man, except in righteousness.' He established laws protecting animals, trees and the environment. He encouraged free trade and ethical investments, but secured workers' rights and forbade usury. He worked for peace, but defined the parameters of the judicious use of force, when force was needed. He convinced people to give up alcohol, drugs, prostitution and crime, and promoted healthy living. He condemned domestic violence, encouraged his wives to speak their own mind, and granted Muslim women many rights not dreamed of in Europe until centuries later, including the right to own property, reject arranged marriages, and seek divorce because of incompatibility. And the Prophet encouraged his followers to seek beneficial knowledge wherever it could be found, with the result that Muslims never experienced a conflict between science and religion, and led the world in many fields of learning for centuries afterwards. Although his enduring legacy can be observed in everything from art to politics, Muhammad's greatest achievement by far was to re-establish pure monotheism. As simple and straightforward to understand as the nucleus at the centre of an atom, the concept of One God lies at the heart of Islamic culture. Muslims turn to their Creator for guidance, without the need for intermediaries, or the loss of dignity that idolatry and superstition bring.
The Prophet accomplished all this through the strength of his character and personal example; he inspired in his followers a love, devotion and sense of awe that was unparalleled. While other men would have been corrupted by the absolute power that he wielded in his later years, Muhammad remained humble, ever aware of the Source of his blessings. 'I am just God's servant,' he said, and 'I have only been sent as a teacher.' Although he spent his days in serving people and his nights in prayer, he preached religious moderation and balance; he forbade his followers to adopt a monastic lifestyle and preferred that they establish strong families and engage themselves in bettering the world around them, while remaining deeply conscious of God.
In the brief space of one generation and during his own lifetime, the Prophet Muhammad* successfully transformed the faith, mentality and culture of the people of Arabia; within 100 years his message had touched the hearts and lives of millions in Africa, Asia and parts of Europe. The Prophet foretold that each succeeding generation would be worse than the one before it, and true to his prediction, Muslims have not always understood or honoured his example. But Muhammad's teachings, speeches and customs were carefully noted down by his Companions, and compiled into books of authentic sayings which are available in translation. Along with the Qur'an, they form the holistic foundation of a satisfying way of life for practising Muslims, while for others, they provide a fascinating glimpse into the heart and mind of an exceptional man and role model from whom much can be learned.
 
http://www.islamhouse.com/401719/en/en/articles/Muhammad_Peace_be_Upon_Him:_A_Role_Model_for_a_New_Millennium
"Rod Speed" <rod.speed.aaa@gmail.com>: Jan 05 01:49PM +1100

Arfa Daily <arfa.daily@ntlworld.com> wrote
 
>>> Arfa is an intelligent and knowledgeable person.
 
>> He clearly isn't on that particular question.

> What particular question ?
 
The stupid claim that article he posted made about the
purported problem with a lot more components in a LED light
instead of the single one with the incandescent it replaced.

>> they used to be even tho they have vastly more components than
>> they used to have. In spades with computer cpus and memory alone.

> You are unbelievable.
 
We'll see...
 
> How did you manage to extrapolate that
> mindless crap from my original post ?
 
The article you mindlessly posted clearly claimed that
when there are lots more components in the LED light
than in the incandescent light it replaced, that that was
absolutely certain to guarantee that it would have a shorter
life than the incandescent it replaced. Pigs arse it does.
 
<reams of your puerile shit any 2 year old could
leave for dead flushed where it belongs>
"Rod Speed" <rod.speed.aaa@gmail.com>: Jan 07 05:25AM +1100

Adrian Tuddenham <adrian@poppyrecords.invalid.invalid> wrote
> a storage element; usually this is found on the HV side of the
> inverter. This brings back the reliability problem: it is asking
> a lot of a big capacitor to survive for many years
 
PC power supplys done like that last fine.
 
> when it is potentially exposed to occasional
> mains glitches from one side
 
It isnt hard to stop those getting to the cap.
 
> and continuously exposed to the
> switching current waveform on the other.
 
That doesn't happen either with the big cap.
 
> For a given energy storage capacity, capacitors are smaller,
> lighter and cheaper than metal-cored chokes, but it is a lot
> more difficult to make them as reliable in the long term.
 
Yes, but in practice its long term enough with PC power supplys.
"Rod Speed" <rod.speed.aaa@gmail.com>: Jan 06 09:26AM +1100

Leif Neland <leif@neland.dk> wrote
 
> My Yaris ran on 3 cylinders. First I changed spark
> plugs, because that what usually worked on old cars.
> But even with a gap of 1.5mm, the spark was fine.
 
Because of all those other components that old cars didn't have.
 
I haven't even bothered to change mine after 10 years.
 
> So I hooked up the OBD-2 reader: Engine misfire cylinder 1.
> I exchanged two "spark plug caps" which is really the
> ignition coil and some electronics, one unit per cylinder.
 
Very unusual way to do things.
 
> running again. The car only had run 460000km, not
> sure when, if ever, the spark plugs had been changed.

> So new cars are MUCH more reliable.
 
Yep. Because they have vastly more components.
Leif Neland <leif@neland.dk>: Jan 06 08:44PM +0100

Rod Speed forklarede den 06-01-2015:
 
>> Price is USD 160, I got an used one for 24USD.
 
> I have considered the Yaris but don't thing I'll ever get one given that
> approach.
 
I find it a good approach, omitting a distributor and 5 cables which
can be attacked by moisture.
Here everything high voltage is sitting nice and dry almost inside the
engine, below a plastic cover.
 
>> Landcruiser outside the garage :-(
 
> Should be able to get one of those cheap too given that
> most of the writeoffs would be at the other end of the car.
 
I've sent off enquries to two dealers, including a whole car with front
damage for for 1000USD.
 
Leif
 
--
Husk kørelys bagpå, hvis din bilfabrikant har taget den idiotiske
beslutning at undlade det.
"Rod Speed" <rod.speed.aaa@gmail.com>: Jan 07 05:44AM +1100

Leif Neland <leif@neland.dk> wrote
 
> Here is the product page:

> http://www.thansen.dk/product.asp?pn=-831477966

> Price is USD 160, I got an used one for 24USD.
 
I have considered the Yaris but don't thing I'll ever get one
given that approach. I've got a Hyundai Getz myself but likely
won't be replacing it unless it breaks dramatically. The previous
VW Golf lasted me 35+ years and I only needed to replace that
when I was stupid enough to no do anything about a known
windscreen leak after a windscreen replacement and that
eventually rusted out the floor and I could be arsed fixing that.

> Alas, now it needs a new back door, because wife didn't
> see I parked the Landcruiser outside the garage :-(
 
Should be able to get one of those cheap too given that
most of the writeoffs would be at the other end of the car.
bob <sound@inetnebr.com>: Jan 05 02:15PM -0600

On 1/2/2015 8:56 AM, Arfa Daily wrote:
> EE Times article that came to me by email today
 
> http://www.electronics-eetimes.com/en/the-big-lie-about-led-lighting.html?cmp_id=7&news_id=222923405
 
> Arfa
Well, i can totally see that. Part of the reason is NOT the LED's
themselves, but the CAP's. If there is a modern multinational cartel
these days, its NOT oil but the manufacturer of small capacitors. They
build these dam things to fail in a few years anymore. Between the
elevated temps they operate at and lack of quality guts, capacitors are
the weak link. And that includes LED lights because they use them in the
power supplys.
 
Last year, i bought a bargain CFL lamp for $1 at the dollar store.
Worked for maybe a hour them ZBOOOM! TOOK it apart and sure enough,
capacitor guts all over.
 
It seems most modern LCD tv's have a life of two or three years then
they go haywire. I was all ready to get a new Sharp LED set before the
first of the year on sale and was about the push go, then figured
i better do some research first. Pages and pages of it failed soon
and the manufacturer would not help. I'm sure capacitors are one
of the major reasons for that also.
 
i just saw some 40W LED bulbs at a ACE US hardware store for $5.99 on
sale. almost got one, but held off for now. Its hard to beat the
simplicity of a incandescent lamp.
 
bob
N_Cook <diverse@tcp.co.uk>: Jan 13 12:49PM

The 3 vol pots , Egen marked J58 AK, heavy log, measuring now 380K ,
could not be easier to rennovate. Solid wiper spring arm fixed to a
paxolin disc by 2 tangs. Grind 1mm wide small slot into the paxolin on
the wiper-pip side of each tang , just enough to allow the tangs to move
forward 1mm . Fill the now voids on the other side of the tangs with
glue spots. Now the new track is 1mm larger radius than worn out middle
track.
 
All valves test fine except one 6BQ5 (EL84) no CH/R problem and gain is
fine, but the balance point wavers across a range, so varying gain about
20% sensitive to vibration. What sort of effect would that have on the
sound output? Loose electrode?
amdx <nojunk@knology.net>: Jan 05 12:59PM -0600

On 1/5/2015 12:07 PM, John Robertson wrote:
 
> Not every parent has that luxury - being able to hire/train one's
> offspring - so it is not a panacea, but it is at least helping him.
 
> John :-#)#
 
Ya, just because you got a college degree doesn't guarantee a job.
(Obama economy)
We can put him to work in our small business, however, all he will learn
is what it's like to deal with the public! Oh, and maybe he would figure
out he could earn 4 x as much if he got a degree.
Mikek
 
---
This email has been checked for viruses by Avast antivirus software.
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Clifford Heath <no.spam@please.net>: Jan 13 10:25PM +1100

I recently acquired this 20yo Service Monitor (1GHz Spectrum Analyser,
etc) which does not boot. I don't wish to discuss its symptoms here,
just to ask whether anyone has any service documentation for it?
 
I've done extensive google searches and found operations manuals, and a
few other things including a supplement for the COM-120C variant
(including a block diagram) but no schematics - IFR/Aeroflex has kept
those really tight. The BatBoard discussion list has a number of other
folk who've also looked and found nothing, but I thought perhaps it was
worth asking here.
 
Clifford Heath <firstname.lastname@gmail.com>
Leif Neland <leif@neland.dk>: Jan 13 11:37AM +0100


> Anglais: Just include the URL (web address) right here where the photo is.
 
> français: Aussie d'indiquer l'URL (adresse WEB) ichi et maintenant pour
> obtenir le photo.
 
Well, the problem for Arnold(?) is where to put the image.
C:\images is not a valid answer :-)
 
The images could be stored on imgur or in dropbox with a public link.
 
--
Je suis Charlie
jurb6006@gmail.com: Jan 12 09:56PM -0800

Got one of these in and the customer seems hot to trot. It is onlty a single copy device so the bill can't really be big. Might be worh a couple hundred at best.
 
it must have worked because the burner drawer is not closing, and the eject button is out of the read drive. Figgure we will just change both drives and be done with it. The two of them might be fifty bucks total and I'llk be done in ten minutes.
 
However, DVD ROMs that do not burn, well on like the Bestbuy site they are a bit hard to find. there is one down the street so I figure instead of fucking wiht shipping and all that, just go there. I nbeed a read drive and a write drive and I need black fronts to match.
 
So I see a burner on there for $16. I mean, I won't put something in a box for $16. So can I just use two burners in the thing ?
 
It only has one little board on the bottom where the SATA cables connect, and a power supply and fan, and that's it.
 
There is absolutely no brand name or model num,ber on it and I can't find an FCC ID, even though I was pretty sure those things were a thing of the past I still looked.
 
Another question is, this isn't one of those deals where I have to get the drive from them is it ? (whoever they are) If they are using standard drives, maybe there is no hardware detection and it set to the OEM drives ?
 
Please advise. I just saw the $16 drives on the website, they might be out of them locally. I might have as much as $60 into them and do not want to waste money.
 
Another thing is it has audio outpout jacks. (not video) You (not you) mean to tell me that someone will take their DVD duplicator and listen to a CD on it ? I put CDROMs in PCs so people do not have to wear out their burner for reading, plus copying is alot smoother.
 
This thing, there is only a power button, no other controls. I assume that when you put in a DVD and a blank it just starts.
 
Also, if these things respect copyguard the job could get blown off. If the guy wants to copy protected material and it won't do it we would rather not ha ve the animousity that could bring. maybe I should talk to him. but when I do that I would like to lknow about this deal. CanI just use two burners in there or will something screw that up ? Computers, ;well sometimes I have told people "We are doing that becvause I do not know" meaning that I am dong what I KNOW will work rather than what I merely think will work. I ain't got all day.
 
Absolutely no model or brand on the thing. If you need, I could look at the board and see the chip number or whatever. What's more, the power supply has one old style connector on it. However no IDE at all. Could this be a stripped down PC power supply ? I don't see an ATX connector on it but wires can be cut.
 
That reminds me I have a PC PS to fix so I got a better PC at work. I ordered caps for its PS and they turned up too big. I did get the guy into Digikey though so now I can fix that.
 
If, IF there is a reason that replacement drive might niot work then I will o=look into the prospect of fixing the ones in there.
 
How the hell do you break the eject button ? I know how. By being an asshole and pushing the button before the disk is done burning and finalizing harder and harder because they are the same type of people who put 25 amp fuses in where a 6 came out. Just had that happen with a guitar amp. I guess there are assholes in this business as well.
 
Anyway, I want to know if there are any hitches involved with just throwing in regular DVD drives in there.
 
Thanks in advance.
Ian Malcolm <See.My.Sig.for.email@totally.invalid>: Jan 13 06:10AM

jurb6006@gmail.com wrote in
 
> Anyway, I want to know if there are any hitches involved with just
> throwing in regular DVD drives in there.
 
> Thanks in advance.
 
If you've got any spare used drives handy, its probably best to try it to
avoid unpleasant surprises before quoting the job.
 
Replacement drives may need to have region free firmware or it will
bounce when they unknowingly lock the region by copying imports.
 
--
Ian Malcolm. London, ENGLAND. (NEWSGROUP REPLY PREFERRED)
ianm[at]the[dash]malcolms[dot]freeserve[dot]co[dot]uk
[at]=@, [dash]=- & [dot]=. *Warning* HTML & >32K emails --> NUL
jurb6006@gmail.com: Jan 12 11:28PM -0800

Oh shit, that's right. Thanks for telling me. that changes the whole game. If they have to be region free then thsat is only ot make copies all over the world ?
 
And what if both drives at region one ? That should work right ?
 
I think I better talk to the customer in this. If he is bringing in DVDs from England or some shit I can see how......
 
Wait a minute, doesn't the regiopn only affect thge playback not the data ? Imena like a PAL disk will not play on an NTSC machine or wsomething ?
 
But then even PC DVDs had regions. I HAD one on which the region was never set and I made a point not to. You oculd only set it five times IIRC. The software it came with reqwuired you to set it. I refused and used it as a DVD ROM,l nd whatever. I do not know what happened to it actually. It might be around here somewhere.
 
I gotta talk to the dude I guess. If he is not dealing wiht international DVDs, most likely two drives set to region one willl work fine, unless there ar ehardware issuies. thatis wha tI was asking. Bt actuyally nex tI work I might just trer into that hting again and see if it is maybe region free. Look up the model numbers and all that.
 
Tell you this much, the customer did not set the region. ;this thing only has a power button and an eject button on each drive. not much to it at all.
John Robertson <spam@flippers.com>: Jan 12 10:01AM -0800

On 01/11/2015 6:58 PM, Arfa Daily wrote:
> I would have thought that anyone would have been willing to pay at least
> a tenner for such a part ??
 
> Arfa
 
I suspect the Chinese must be subsidizing the postage of orders like
this - the ones I get have tracking numbers, and Canada Post charges
around $20 minimum for a tracked international package.
 
If this is the case then international action may be needed to bring
China into line on this. Interestingly China has agreed to drop the
embargo on exporting Rare Earths - of course they may have been worried
about loosing the somewhat exclusive market they had (China has 20% of
world reserves, but 90% of the sales) as I suspect the other countries
that had rare earths were busy getting all sorts of offers from mining
companies and refiners to fill the gap!
 
John :-#(#
 
--
(Please post followups or tech inquiries to the newsgroup)
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
(604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."
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