sci.electronics.repair - 16 new messages in 8 topics - digest

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

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Today's topics:

==============================================================================
TOPIC: Washing machine motor won't start, bad triac ?
http://groups.google.com/group/sci.electronics.repair/t/96d2b3fb706b3e62?hl=en
==============================================================================

== 1 of 3 ==
Date: Mon, Feb 28 2011 1:04 pm
From: Baron

Michael A. Terrell Inscribed thus:

>
> Baron wrote:
>>
>> Andre Majorel Inscribed thus:
>>
>> ? On 2011-02-26, Baron ?baron@linuxmaniac.net? wrote:
>> ?? Sylvia Else Inscribed thus:
>> ??
>> ??? I'd have to wonder whether one of the rotor windings has failed
>> ??? open-cicuit. I think that could even account for the sparks. The
>> ??? magnetic field for a winding that is becoming disconnected by the
>> ??? brush action has to collapse because the broken winding that's
>> being ??? connected cannot maintain the field.
>> ??
>> ?? Sounds like OC segments on the comm...
>> ?
>> ? The old man and I don't know enough about motors to be sure but
>> ? we did suspect something along the same lines.
>>
>> Its easy enough to test. In the old days a buzz box was used,
>> nowadays no one bothers ! Its far cheaper just to throw it in the
>> scrap box and buy a new one.
>
>
> A 'Growler' was used to test the armature in a brush type motor.
>

Wow ! I haven't heard that term for a long time. Same kit or similar
though.

--
Best Regards:
Baron.

== 2 of 3 ==
Date: Mon, Feb 28 2011 2:33 pm
From: PeterD

On 2/28/2011 4:04 PM, Baron wrote:
> Michael A. Terrell Inscribed thus:
>
>>
>> Baron wrote:
>>>
>>> Andre Majorel Inscribed thus:
>>>
>>> ? On 2011-02-26, Baron ?baron@linuxmaniac.net? wrote:
>>> ?? Sylvia Else Inscribed thus:
>>> ??
>>> ??? I'd have to wonder whether one of the rotor windings has failed
>>> ??? open-cicuit. I think that could even account for the sparks. The
>>> ??? magnetic field for a winding that is becoming disconnected by the
>>> ??? brush action has to collapse because the broken winding that's
>>> being ??? connected cannot maintain the field.
>>> ??
>>> ?? Sounds like OC segments on the comm...
>>> ?
>>> ? The old man and I don't know enough about motors to be sure but
>>> ? we did suspect something along the same lines.
>>>
>>> Its easy enough to test. In the old days a buzz box was used,
>>> nowadays no one bothers ! Its far cheaper just to throw it in the
>>> scrap box and buy a new one.
>>
>>
>> A 'Growler' was used to test the armature in a brush type motor.
>>
>
> Wow ! I haven't heard that term for a long time. Same kit or similar
> though.
>

A growler is used to test for shorts, but won't test for opens. To test
for opens, one uses a simple ohm meter.

--
I'm never going to grow up.

== 3 of 3 ==
Date: Mon, Feb 28 2011 2:33 pm
From: "Michael A. Terrell"

Baron wrote:
>
> Michael A. Terrell Inscribed thus:
>
> >
> > Baron wrote:
> >>
> >> Andre Majorel Inscribed thus:
> >>
> >> ? On 2011-02-26, Baron ?baron@linuxmaniac.net? wrote:
> >> ?? Sylvia Else Inscribed thus:
> >> ??
> >> ??? I'd have to wonder whether one of the rotor windings has failed
> >> ??? open-cicuit. I think that could even account for the sparks. The
> >> ??? magnetic field for a winding that is becoming disconnected by the
> >> ??? brush action has to collapse because the broken winding that's
> >> being ??? connected cannot maintain the field.
> >> ??
> >> ?? Sounds like OC segments on the comm...
> >> ?
> >> ? The old man and I don't know enough about motors to be sure but
> >> ? we did suspect something along the same lines.
> >>
> >> Its easy enough to test. In the old days a buzz box was used,
> >> nowadays no one bothers ! Its far cheaper just to throw it in the
> >> scrap box and buy a new one.
> >
> >
> > A 'Growler' was used to test the armature in a brush type motor.
> >
>
> Wow ! I haven't heard that term for a long time. Same kit or similar
> though.

The last reference I saw to one was in a '60s auto repair manual,
about rebuilding 12v generators.

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

==============================================================================
TOPIC: Adding RGB input to Sony Trinitron
http://groups.google.com/group/sci.electronics.repair/t/068db87850076058?hl=en
==============================================================================

== 1 of 3 ==
Date: Mon, Feb 28 2011 1:19 pm
From: boardjunkie1

On Feb 27, 8:04 pm, boardjunkie1 <boardjunk...@gmail.com> wrote:
> On Feb 27, 6:49 pm, Adrian C <em...@here.invalid> wrote:
>
>
>
>
>
> > On 27/02/2011 19:11, boardjunkie1 wrote:
>
> > > Ok, I've been looking at the datasheet for the jungle chip and it
> > > appears I can use the set of unused RGB inputs. I'm a little foggy
> > > about the select line tho (YS1). They left it floating, so to select
> > > that set of inputs what is it looking for? Just a logic level H or L?
>
> > Top of Page 9, description for Pin 25?
> > More than 0.7V switches the input on.
>
> > However, there is an I2C register detailed on Page 22 - RGB SEL (1):
> > "Disables YS1 switch selection and prohibits external signal input from
> > RGB1"
>
> > If that's set (and it probably is_, then you'll have to find a way to
> > unset that. EEPROM hacking? dunno.
>
> > Seems, there is a pin compatible jungle chip, the CXA2060AS which works
> > for PAL sets that will have SCART RGB on those same inputs.http://www.sony.net/Products/SC-HP/cx_news/vol11/pdf/a2060.pdf
>
> > A bit of googling should find you a european Sony set that uses that
> > chip and then ... etc....
>
> > (Can't take all the fun away from your expedition!... :-)
>
> > --
> > Adrian C
>
> Ok, good to know. If the extra RGB input idea doesn't pan out I can
> always inject the color signals at the RGB outputs on the jungle chip
> via the RGB amp I had to build to get the video V levels up to where
> the arcade monitor wanted to get good color saturation and black level.- Hide quoted text -
>
> - Show quoted text -

Just an update. The extra set of RGB inputs on the jungle chip *was*
disabled in software. I got nothing there. So I just injected color
inputs at the RGB output pins. So its up and runnin', just some minor
tweaks to be done. Thanks everyone for the info....

== 2 of 3 ==
Date: Mon, Feb 28 2011 7:50 pm
From: stratus46@yahoo.com

On Feb 28, 1:19 pm, boardjunkie1 <boardjunk...@gmail.com> wrote:
> On Feb 27, 8:04 pm, boardjunkie1 <boardjunk...@gmail.com> wrote:
>
>
>
>
>
> > On Feb 27, 6:49 pm, Adrian C <em...@here.invalid> wrote:
>
> > > On 27/02/2011 19:11, boardjunkie1 wrote:
>
> > > > Ok, I've been looking at the datasheet for the jungle chip and it
> > > > appears I can use the set of unused RGB inputs. I'm a little foggy
> > > > about the select line tho (YS1). They left it floating, so to select
> > > > that set of inputs what is it looking for? Just a logic level H or L?
>
> > > Top of Page 9, description for Pin 25?
> > > More than 0.7V switches the input on.
>
> > > However, there is an I2C register detailed on Page 22 - RGB SEL (1):
> > > "Disables YS1 switch selection and prohibits external signal input from
> > > RGB1"
>
> > > If that's set (and it probably is_, then you'll have to find a way to
> > > unset that. EEPROM hacking? dunno.
>
> > > Seems, there is a pin compatible jungle chip, the CXA2060AS which works
> > > for PAL sets that will have SCART RGB on those same inputs.http://www.sony.net/Products/SC-HP/cx_news/vol11/pdf/a2060.pdf
>
> > > A bit of googling should find you a european Sony set that uses that
> > > chip and then ... etc....
>
> > > (Can't take all the fun away from your expedition!... :-)
>
> > > --
> > > Adrian C
>
> > Ok, good to know. If the extra RGB input idea doesn't pan out I can
> > always inject the color signals at the RGB outputs on the jungle chip
> > via the RGB amp I had to build to get the video V levels up to where
> > the arcade monitor wanted to get good color saturation and black level.- Hide quoted text -
>
> > - Show quoted text -
>
> Just an update. The extra set of RGB inputs on the jungle chip *was*
> disabled in software. I got nothing there. So I just injected color
> inputs at the RGB output pins. So its up and runnin', just some minor
> tweaks to be done. Thanks everyone for the info....

Glad to see you got it going. I'm sorry I assumed you didn't know what
you're doing. Congratulations.

G²

== 3 of 3 ==
Date: Mon, Feb 28 2011 8:27 pm
From: boardjunkie1

On Feb 28, 10:50 pm, stratu...@yahoo.com wrote:
> On Feb 28, 1:19 pm, boardjunkie1 <boardjunk...@gmail.com> wrote:
>
>
>
>
>
> > On Feb 27, 8:04 pm, boardjunkie1 <boardjunk...@gmail.com> wrote:
>
> > > On Feb 27, 6:49 pm, Adrian C <em...@here.invalid> wrote:
>
> > > > On 27/02/2011 19:11, boardjunkie1 wrote:
>
> > > > > Ok, I've been looking at the datasheet for the jungle chip and it
> > > > > appears I can use the set of unused RGB inputs. I'm a little foggy
> > > > > about the select line tho (YS1). They left it floating, so to select
> > > > > that set of inputs what is it looking for? Just a logic level H or L?
>
> > > > Top of Page 9, description for Pin 25?
> > > > More than 0.7V switches the input on.
>
> > > > However, there is an I2C register detailed on Page 22 - RGB SEL (1):
> > > > "Disables YS1 switch selection and prohibits external signal input from
> > > > RGB1"
>
> > > > If that's set (and it probably is_, then you'll have to find a way to
> > > > unset that. EEPROM hacking? dunno.
>
> > > > Seems, there is a pin compatible jungle chip, the CXA2060AS which works
> > > > for PAL sets that will have SCART RGB on those same inputs.http://www.sony.net/Products/SC-HP/cx_news/vol11/pdf/a2060.pdf
>
> > > > A bit of googling should find you a european Sony set that uses that
> > > > chip and then ... etc....
>
> > > > (Can't take all the fun away from your expedition!... :-)
>
> > > > --
> > > > Adrian C
>
> > > Ok, good to know. If the extra RGB input idea doesn't pan out I can
> > > always inject the color signals at the RGB outputs on the jungle chip
> > > via the RGB amp I had to build to get the video V levels up to where
> > > the arcade monitor wanted to get good color saturation and black level.- Hide quoted text -
>
> > > - Show quoted text -
>
> > Just an update. The extra set of RGB inputs on the jungle chip *was*
> > disabled in software. I got nothing there. So I just injected color
> > inputs at the RGB output pins. So its up and runnin', just some minor
> > tweaks to be done. Thanks everyone for the info....
>
> Glad to see you got it going. I'm sorry I assumed you didn't know what
> you're doing. Congratulations.
>
> G²- Hide quoted text -
>
> - Show quoted text -

No harm done. It looks pretty damn good as of now, but I think the
bottleneck may be the RGB amp I built. I may look into an IC based
circuit that is a little more elegant than what I threw together from
whatever I could rob out of junk boards.

==============================================================================
TOPIC: Arfa Daily = MORONIC TROLL
http://groups.google.com/group/sci.electronics.repair/t/2588a3ac4e8b297d?hl=en
==============================================================================

== 1 of 3 ==
Date: Mon, Feb 28 2011 1:36 pm
From: "Charles"

"Phil Allison" wrote in message news:8su6fbF87bU1@mid.individual.net...

"Charles the Puke "

> Until P.A. develops a reasonable command of English

** Whaaattttt ??

My command of the English language is second to none

- you vile, autistic shithead.

Well, there you go Phil! You re-entered the discussion and shot your own
foot off. Vile means repulsive and autistic means withdrawn and shithead
means you!

If you ever went to school, go see them (the headmasters) and demand that
your money (or that of your keepers) be returned.

== 2 of 3 ==
Date: Mon, Feb 28 2011 2:40 pm
From: "Michael A. Terrell"

Charles wrote:
>
> "Phil Allison" wrote in message news:8su6fbF87bU1@mid.individual.net...
>
> "Charles the Puke "
>
> > Until P.A. develops a reasonable command of English
>
> ** Whaaattttt ??
>
> My command of the English language is second to none
>
> - you vile, autistic shithead.
>
> Well, there you go Phil! You re-entered the discussion and shot your own
> foot off. Vile means repulsive and autistic means withdrawn and shithead
> means you!
>
> If you ever went to school, go see them (the headmasters) and demand that
> your money (or that of your keepers) be returned.

Careful, Charles. Phil's favorite 'things' are sheep, and teachers.

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

== 3 of 3 ==
Date: Mon, Feb 28 2011 2:40 pm
From: "Phil Allison"

"Charles the Fuckwit autistic Puke "
>
>> Until P.A. develops a reasonable command of English
>
> ** Whaaattttt ??
>
> My command of the English language is second to none
>
> - you vile, autistic shithead.
>
> Well, there you go Phil! You re-entered the discussion and shot your own
> foot off.

** Bollocks - I just shot your pointy head right off.

There was absolutely nothing inside but shit.

.... Phil

==============================================================================
TOPIC: Yammy PA ...
http://groups.google.com/group/sci.electronics.repair/t/62e115d012f56e15?hl=en
==============================================================================

== 1 of 1 ==
Date: Mon, Feb 28 2011 2:29 pm
From: "Gareth Magennis"

"Arfa Daily" <arfa.daily@ntlworld.com> wrote in message
news:7xZ9p.153738$Bg2.22582@newsfe03.ams2...
>
>
> "N_Cook" <diverse@tcp.co.uk> wrote in message
> news:ik8p8r$tp9$1@news.eternal-september.org...
>> Arfa Daily <arfa.daily@ntlworld.com> wrote in message
>> news:vYQ9p.81981$qA1.33262@newsfe08.ams2...
>>>
>>>
>>> "N_Cook" <diverse@tcp.co.uk> wrote in message
>>> news:ik7t80$o0s$1@news.eternal-september.org...
>>> > Arfa Daily <arfa.daily@ntlworld.com> wrote in message
>>> > news:2Jx9p.23650$Xm4.17829@newsfe10.ams2...
>>> >> Anyone got schematics for a Yammy MS400 powered speaker ?
>>> >>
>>> >> TIA
>>> >>
>>> >> Arfa
>>> >
>>> > What does the R mean here? not rack-mount
>>> > http://www.eserviceinfo.com/downloadsm/53690/Yamaha_MSR400.html
>>> >
>>> >
>>>
>>> Hmmm. Interesting. How did you find that on eserviceinfo ? I searched
>> every
>>> way I could think of, and never came up with that result. It does appear
>> at
>>> first glance, to be the correct manual for the unit, so thanks for that.
>>> Just to make sure that I wasn't going mad or blind - well, mad already,
>> and
>>> getting more bat-like by the year :-) - I just went and checked again
>> on
>>> the actual unit, and it definitely says "Model MS400". No 'R' in there.
>>>
>>> Arfa
>>>
>>
>> Their search is organised as OR to maximise ad revenue
>> use instead Google implied-AND instead
>>
>> term1 AND term2 site:eserviceinfo.com
>> in searchbox
>> so you can use YAMAHA AND 400
>> YAMAHA AND MS etc, not practical with OR
>>
>>
>
> Ah ! Good tip. Thanks !
>
> Arfa

I like that too. Just have to remember it now.

Cheers!

==============================================================================
TOPIC: Electrolytics blow after 1 hr
http://groups.google.com/group/sci.electronics.repair/t/22739e68af51f6a4?hl=en
==============================================================================

== 1 of 3 ==
Date: Mon, Feb 28 2011 2:45 pm
From: John Robertson

Jeff Liebermann wrote:
> On Mon, 28 Feb 2011 11:19:25 +0000, Mike Tomlinson
> <mike@jasper.org.uk> wrote:
>
>> What are the figures for electrical fires in the USA again?
>
> 310 deaths last year. About 1/3 of the electrical fires involve
> electrical shorts of some sort. Even with fuses in the power plugs,
> shorts in the walls will have the same effect in both systems:
> <http://www.interfire.org/features/electric_wiring_faults.asp>
> ...for 1993 - 1997 are that 41,200 home structure fires
> per year are attributed to 'electrical distribution.' These
> electrical distribution fires account for 336 civilian deaths,
> 1446 civilian injuries, and $643.9 million in direct property
> damage per year.
>
> <http://www.nfpa.org/assets/files//PDF/Proceedings/Ahrens_presentation.pdf>
>
> <http://www.usfa.dhs.gov/citizens/home_fire_prev/electrical.shtm>
> During a typical year, home electrical problems account for
> 28,600 fires and $1.1 billion in property losses. 53% of
> residential electrical fires involve electrical wiring.
>
> I couldn't find any statistics for UK.
>

20,000/year electrical fires, etc. in the UK according to:

http://www.communities.gov.uk/news/corporate/1824335

3,000/year in Ontario Canada (about thirteen million folks):

http://www.niagarafalls.ca/city_hall/departments/fire_services/prevention/electricalfirehazards.asp

John :-#)#

--
(Please post followups or tech enquiries to the newsgroup)
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."

== 2 of 3 ==
Date: Mon, Feb 28 2011 8:59 pm
From: Mike Tomlinson

In article <IrSdnSmKNKGoYPbQnZ2dnUVZ_h2dnZ2d@earthlink.com>, Michael A.
Terrell <mike.terrell@earthlink.net> writes

> They are available online if you really care.

Evasion of question noted.

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

== 3 of 3 ==
Date: Mon, Feb 28 2011 9:13 pm
From: "Michael A. Terrell"

Mike Tomlinson wrote:
>
> In article <IrSdnSmKNKGoYPbQnZ2dnUVZ_h2dnZ2d@earthlink.com>, Michael A.
> Terrell <mike.terrell@earthlink.net> writes
>
> > They are available online if you really care.
>
> Evasion of question noted.

Evasion? Numbers for both the US and UK were posted in this thread.
From what I saw, the UK is a huge tnderbox of poorly wired buildings.
Then, multiply the UK numbers by 5 to compare them to the US.

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

==============================================================================
TOPIC: Website: http://www.24hours-online.com paypal payment Lacoste polo t
shirt china supplier
http://groups.google.com/group/sci.electronics.repair/t/1791cce4edf9eadc?hl=en
==============================================================================

== 1 of 1 ==
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==============================================================================
TOPIC: LOVE CHATTING AND DATING -HOW TO ATTRACT UR GIRL FRIEND
http://groups.google.com/group/sci.electronics.repair/t/cc03f5909667cd28?hl=en
==============================================================================

== 1 of 1 ==
Date: Mon, Feb 28 2011 11:35 pm
From: devi vithya

http://www.love4indianpeople.blogspot.com/

==============================================================================
TOPIC: Fender SPL 9000 , 1997 slave amp
http://groups.google.com/group/sci.electronics.repair/t/e8c4224393658fe1?hl=en
==============================================================================

== 1 of 1 ==
Date: Tues, Mar 1 2011 12:16 am
From: "N_Cook"

Probably the sockets were soldered onto the pcb without laying on a jig. So
misaligned when fixed onto chassis. So inbuilt stress in board combined with
the board being in the internal hot air flow to the fan

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