sci.electronics.repair@googlegroups.com

Today's topics:

* another puzzler - 7 messages, 3 authors
http://groups.google.com/group/sci.electronics.repair/t/b80657d8be4c22cd?hl=en
* Help with wiring colors on old headphones - 12 messages, 4 authors
http://groups.google.com/group/sci.electronics.repair/t/f8481990f5c47309?hl=en
* a bios question - 4 messages, 2 authors
http://groups.google.com/group/sci.electronics.repair/t/7c0bc6748d91ff8b?hl=en
* Samsung 204T syncmaster problem -- not bad caps - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/06f5289f365ccba1?hl=en
* Zimo DCC info ? - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/93fbd838f0d4056e?hl=en

==============================================================================
TOPIC: another puzzler
http://groups.google.com/group/sci.electronics.repair/t/b80657d8be4c22cd?hl=en
==============================================================================

== 1 of 7 ==
Date: Sat, May 14 2011 2:05 am
From: spam@spam.com (Don Pearce)

On Sat, 14 May 2011 17:39:22 +1000, "Trevor" <trevor@home.net> wrote:

>
>"Don Pearce" <spam@spam.com> wrote in message
>news:4dcd9c92.240121013@news.eternal-september.org...
>> No, you are in fact choosing one door (your first choice) or BOTH the
>> other doors - the choice if you swap. The revealed goat is one of the
>> two-door choice, so you have twice the chance of winning the car if
>> you swap.
>
>What garbage, there are only now 2 doors whether you swap or not, ignoring
>the TV host likely manipulation, which CANNOT be determined as a simple
>statistic.
>(although could probably be measured from a large number of such TV game
>shows. I am unaware of any such actual measurement however)
>
>Trevor.
>
This is like pulling teeth. I'm not going to explain it any more.
Either you understand or you don't. It helps to have studied maths and
statistics. And no, there isn't any manipulation. It is purely a
matter of understanding what is and isn't new information.

d

== 2 of 7 ==
Date: Sat, May 14 2011 3:40 am
From: "William Sommerwerck"

I find it interesting that almost everyone who "agrees" with me is quite
wrong.

They are interpreting the problem and its explanation in terms of what they
would like the situation to be, rather than looking at it from a strictly
mathematical basis.

== 3 of 7 ==
Date: Sat, May 14 2011 3:48 am
From: "Arny Krueger"

"spamtrap1888" <spamtrap1888@gmail.com> wrote in message
news:dd7c10fd-38c7-43e2-9db6-5c4e25f4a946@35g2000prp.googlegroups.com

> Declaring that there is no connection between the two
> situations is the source of the poster's error. Monty
> Hall knew if the player was correct or not, and so the
> player's choice of the door in the first round
> influenced the selection of the goat door. The graphic
> helps you understand that there are still three scenarios
> once a goat door has been revealed.

I get it now.

== 4 of 7 ==
Date: Sat, May 14 2011 3:46 am
From: "William Sommerwerck"

"Don Pearce" <spam@spam.com> wrote in message
news:4dce456c.283347127@news.eternal-september.org...
> On Sat, 14 May 2011 17:39:22 +1000, "Trevor" <trevor@home.net> wrote:
>
> >
> >"Don Pearce" <spam@spam.com> wrote in message
> >news:4dcd9c92.240121013@news.eternal-september.org...
> >> No, you are in fact choosing one door (your first choice) or BOTH the
> >> other doors - the choice if you swap. The revealed goat is one of the
> >> two-door choice, so you have twice the chance of winning the car if
> >> you swap.
> >
> >What garbage, there are only now 2 doors whether you swap or not,
ignoring
> >the TV host likely manipulation, which CANNOT be determined as a simple
> >statistic.
> >(although could probably be measured from a large number of such TV game
> >shows. I am unaware of any such actual measurement however)
> >
> >Trevor.
> >
> This is like pulling teeth. I'm not going to explain it any more.
> Either you understand or you don't. It helps to have studied maths and
> statistics. And no, there isn't any manipulation. It is purely a
> matter of understanding what is and isn't new information.

Here's the simplest-possible correct explanation...

2/3 of the time, your initial pick is wrong. The host will then show you the
"goat" prize (the other being the good prize). Ergo, switching will get you
the good prize 2/3 of the time. 1/3 of the time you'll lose the good prize.
This is obviously better than sticking with the initial choice (which is
right only 1/3 of the time).

How much simpler does it need to be, to be comprehensible?

== 5 of 7 ==
Date: Sat, May 14 2011 3:50 am
From: spam@spam.com (Don Pearce)

On Sat, 14 May 2011 03:46:26 -0700, "William Sommerwerck"
<grizzledgeezer@comcast.net> wrote:

>"Don Pearce" <spam@spam.com> wrote in message
>news:4dce456c.283347127@news.eternal-september.org...
>> On Sat, 14 May 2011 17:39:22 +1000, "Trevor" <trevor@home.net> wrote:
>>
>> >
>> >"Don Pearce" <spam@spam.com> wrote in message
>> >news:4dcd9c92.240121013@news.eternal-september.org...
>> >> No, you are in fact choosing one door (your first choice) or BOTH the
>> >> other doors - the choice if you swap. The revealed goat is one of the
>> >> two-door choice, so you have twice the chance of winning the car if
>> >> you swap.
>> >
>> >What garbage, there are only now 2 doors whether you swap or not,
>ignoring
>> >the TV host likely manipulation, which CANNOT be determined as a simple
>> >statistic.
>> >(although could probably be measured from a large number of such TV game
>> >shows. I am unaware of any such actual measurement however)
>> >
>> >Trevor.
>> >
>> This is like pulling teeth. I'm not going to explain it any more.
>> Either you understand or you don't. It helps to have studied maths and
>> statistics. And no, there isn't any manipulation. It is purely a
>> matter of understanding what is and isn't new information.
>
>
>Here's the simplest-possible correct explanation...
>
>2/3 of the time, your initial pick is wrong. The host will then show you the
>"goat" prize (the other being the good prize). Ergo, switching will get you
>the good prize 2/3 of the time. 1/3 of the time you'll lose the good prize.
>This is obviously better than sticking with the initial choice (which is
>right only 1/3 of the time).
>
>How much simpler does it need to be, to be comprehensible?
>

Some will never get it, no matter how it is explained.

d

== 6 of 7 ==
Date: Sat, May 14 2011 4:07 am
From: "Arny Krueger"

"Trevor" <trevor@home.net> wrote in message
news:4dce3407$0$22473$afc38c87@news.optusnet.com.au
> "spamtrap1888" <spamtrap1888@gmail.com> wrote in message
> news:5f3fe288-fefb-4981-a73c-78c107ea2a97@z15g2000prn.googlegroups.com...
>> The player picks a door and has a 1/3 chance of being
>> right. This chance does not change when a losing door is
>> revealed, so the only remaining choice gives you a 2/3
>> chance.
>
> Which totally ignores the fact that the only reason the
> first door is opened is because the host already knows it
> is incorrect. This is NOT a purely statistical game of
> chance, the host can manipulate the odds either way, and
> regularly do.

There are two iron rules that dictate which door the host opens.

(1) There can't be a car behind it

(2) It can't be the door the contestant picked.

If the contestant picks a door with no car, then there is only one other
door the host can choose. The host has no choice and can't affect the
outcome.

If the contestant chooses a door with a car, then the host can choose either
of two two doors that have no car, but which one he chooses doesn't seem to
affect the outcome. His effect on the odds comes from the fact that he
revealed one of the two doors with no car behind it.

How can the host manipulate the odds?

== 7 of 7 ==
Date: Sat, May 14 2011 4:31 am
From: "William Sommerwerck"

"Arny Krueger" <arnyk@hotpop.com> wrote in message
news:psadnZt_UpF1_FPQnZ2dnUVZ_v-dnZ2d@giganews.com...
> "Trevor" <trevor@home.net> wrote in message
> news:4dce3407$0$22473$afc38c87@news.optusnet.com.au
> > "spamtrap1888" <spamtrap1888@gmail.com> wrote in message
> >
news:5f3fe288-fefb-4981-a73c-78c107ea2a97@z15g2000prn.googlegroups.com...
> >> The player picks a door and has a 1/3 chance of being
> >> right. This chance does not change when a losing door is
> >> revealed, so the only remaining choice gives you a 2/3
> >> chance.
> >
> > Which totally ignores the fact that the only reason the
> > first door is opened is because the host already knows it
> > is incorrect. This is NOT a purely statistical game of
> > chance, the host can manipulate the odds either way, and
> > regularly do.
>
> There are two iron rules that dictate which door the host opens.
>
> (1) There can't be a car behind it
>
> (2) It can't be the door the contestant picked.
>
> If the contestant picks a door with no car, then there is only one other
> door the host can choose. The host has no choice and can't affect the
> outcome.
>
> If the contestant chooses a door with a car, then the host can choose
either
> of two two doors that have no car, but which one he chooses doesn't seem
to
> affect the outcome. His effect on the odds comes from the fact that he
> revealed one of the two doors with no car behind it.
>
> How can the host manipulate the odds?

Correct. The host has no effect on the odds.

Part of the confusion occurs because people confuse permutations and
combinations. In the situation where the contestant has chosen the good
prize, the two bad prizes form a combination, not a permutation.

==============================================================================
TOPIC: Help with wiring colors on old headphones
http://groups.google.com/group/sci.electronics.repair/t/f8481990f5c47309?hl=en
==============================================================================

== 1 of 12 ==
Date: Sat, May 14 2011 4:29 am
From: Patrick

I have some vinatge headphones (Sennheiser HD424) and want to attach a new
plug.

Which color wires are the positive ones?

The colors in one of the leads are red & blue and in the other lead black &
yellow. (No wire is used as screening - there's just two wires in each
lead.)

== 2 of 12 ==
Date: Sat, May 14 2011 4:44 am
From: "Phil Allison"

"Patrick"
>
>I have some vinatge headphones (Sennheiser HD424) and want to attach a new
> plug.
>
> Which color wires are the positive ones?
>
> The colors in one of the leads are red & blue and in the other lead black
> &
> yellow. (No wire is used as screening - there's just two wires in each
> lead.)

** Stick the damn phones on your fat head and connect pairs of wires to a AA
battery until you hear a click.

Now you have your two pairs of wires.

Wire them to a plug any way around you like and connect the same AA to the
common and both positives at the same time.

If the click seems to comes from right inside your head - game over.

If you need more explanation - you do not deserve it.

..... Phil

== 3 of 12 ==
Date: Sat, May 14 2011 4:54 am
From: Patrick

On 12:44 14 May 2011, Phil Allison wrote:

>
> "Patrick"
>>
>>I have some vinatge headphones (Sennheiser HD424) and want to attach a
>>new
>> plug.
>>
>> Which color wires are the positive ones?
>>
>> The colors in one of the leads are red & blue and in the other lead
>> black & yellow. (No wire is used as screening - there's just two
>> wires in each lead.)
>
>
> ** Stick the damn phones on your fat head and connect pairs of wires
> to a AA battery until you hear a click.
>
> Now you have your two pairs of wires.
>
> Wire them to a plug any way around you like and connect the same AA to
> the common and both positives at the same time.
>
> If the click seems to comes from right inside your head - game over.
>
> If you need more explanation - you do not deserve it.
>
> ..... Phil

The four wires are already grouped as two pairs, so we already know which
two wires go together.

I want to get the phasing right (even for headphones). I need to know
which color wire in each pair is the positive.

Are you familiar with decoding these red & blue and black & yellow
headphone wires?

== 4 of 12 ==
Date: Sat, May 14 2011 5:07 am
From: "Dave Plowman (News)"

In article <Xns9EE57F121FAB96AD265@69.16.185.252>,
Patrick <invalid@invalid.com> wrote:
> I have some vinatge headphones (Sennheiser HD424) and want to attach a
> new plug.

> Which color wires are the positive ones?

> The colors in one of the leads are red & blue and in the other lead
> black & yellow. (No wire is used as screening - there's just two wires
> in each lead.)

Black and blue are the commons. Not that it would make any difference if
you commoned red and yellow.

You can check for sure by unplugging the leads from each actual earpiece
(red and blue plugs), but be careful to pull on the actual plug only. The
pins are of slightly different sizes.

Hope you have a source of the muffs for these - they crumble to dust quite
quickly.

--
*Am I ambivalent? Well, yes and no.

Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound.

== 5 of 12 ==
Date: Sat, May 14 2011 5:22 am
From: Martin Brown <|||newspam|||@nezumi.demon.co.uk>

On 14/05/2011 12:54, Patrick wrote:
> On 12:44 14 May 2011, Phil Allison wrote:
>
>>
>> "Patrick"
>>>
>>> I have some vinatge headphones (Sennheiser HD424) and want to attach a
>>> new
>>> plug.
>>>
>>> Which color wires are the positive ones?
>>>
>>> The colors in one of the leads are red& blue and in the other lead
>>> black& yellow. (No wire is used as screening - there's just two
>>> wires in each lead.)
>>
>>
>> ** Stick the damn phones on your fat head and connect pairs of wires
>> to a AA battery until you hear a click.
>>
>> Now you have your two pairs of wires.
>>
>> Wire them to a plug any way around you like and connect the same AA to
>> the common and both positives at the same time.
>>
>> If the click seems to comes from right inside your head - game over.
>>
>> If you need more explanation - you do not deserve it.
>>
>> ..... Phil
>
> The four wires are already grouped as two pairs, so we already know which
> two wires go together.
>
> I want to get the phasing right (even for headphones). I need to know
> which color wire in each pair is the positive.

No you don't need to know it. It will be abundantly clear if you have
the phase in one ear wrong by 180 degrees - unless that is you are deaf.
>
> Are you familiar with decoding these red& blue and black& yellow
> headphone wires?

I would hazard a guess red, yellow are positive and blue, black
negative. But why didn't you make a note of where the cables were
connected when you took the original apart?

There are only four wires as two trivially distinct pairs - the worst
that can happen is you need to flip a pair if you choose incorrectly.

Regards,
Martin Brown

== 6 of 12 ==
Date: Sat, May 14 2011 5:45 am
From: "Phil Allison"

"Patrick"
Phil Allison wrote:
> "Patrick"
>>>
>>>I have some vinatge headphones (Sennheiser HD424) and want to attach a
>>>new plug.
>>>
>>> Which color wires are the positive ones?
>>>
>>> The colors in one of the leads are red & blue and in the other lead
>>> black & yellow. (No wire is used as screening - there's just two
>>> wires in each lead.)
>>
>>
>> ** Stick the damn phones on your fat head and connect pairs of wires
>> to a AA battery until you hear a click.
>>
>> Now you have your two pairs of wires.
>>
>> Wire them to a plug any way around you like and connect the same AA to
>> the common and both positives at the same time.
>>
>> If the click seems to comes from right inside your head - game over.
>>
>> If you need more explanation - you do not deserve it.
>>
>
>
> The four wires are already grouped as two pairs, so we already know which
> two wires go together.
>
> I want to get the phasing right (even for headphones). I need to know
> which color wire in each pair is the positive.

** I just gave the the answer - you fucking idiot.

.... Phil

== 7 of 12 ==
Date: Sat, May 14 2011 5:46 am
From: Patrick

On 13:22 14 May 2011, Martin Brown wrote:

> On 14/05/2011 12:54, Patrick wrote:
>> On 12:44 14 May 2011, Phil Allison wrote:
>>
>>>
>>> "Patrick"
>>>>
>>>> I have some vinatge headphones (Sennheiser HD424) and want to
>>>> attach a new plug.
>>>>
>>>> Which color wires are the positive ones?
>>>>
>>>> The colors in one of the leads are red& blue and in the other lead
>>>> black& yellow. (No wire is used as screening - there's just two
>>>> wires in each lead.)
>>>
>>>
>>> ** Stick the damn phones on your fat head and connect pairs of wires
>>> to a AA battery until you hear a click.
>>>
>>> Now you have your two pairs of wires.
>>>
>>> Wire them to a plug any way around you like and connect the same AA
>>> to the common and both positives at the same time.
>>>
>>> If the click seems to comes from right inside your head - game
>>> over.
>>>
>>> If you need more explanation - you do not deserve it.
>>>
>>> ..... Phil
>>
>> The four wires are already grouped as two pairs, so we already know
>> which two wires go together.
>>
>> I want to get the phasing right (even for headphones). I need to
>> know which color wire in each pair is the positive.
>
> No you don't need to know it. It will be abundantly clear if you have
> the phase in one ear wrong by 180 degrees - unless that is you are
> deaf.
>>
>> Are you familiar with decoding these red& blue and black& yellow
>> headphone wires?
>
> I would hazard a guess red, yellow are positive and blue, black
> negative. But why didn't you make a note of where the cables were
> connected when you took the original apart?
>
> There are only four wires as two trivially distinct pairs - the worst
> that can happen is you need to flip a pair if you choose incorrectly.
>
> Regards,
> Martin Brown

Years ago someone wired up these headphones to a 1/4 inch plug and they
they say they don't know what polarity meant. There's no point following
their clueless wiring.

Out of phase headphone transducers create a far more subtle adverse
effect than that noticed in loudspeakers, so it is not something
immediately evident by A-B testing. Nor is testing necessary if someone
here knows what the color coding is.

== 8 of 12 ==
Date: Sat, May 14 2011 5:49 am
From: "Phil Allison"

"Patrick = another PITA Jerk
>
> Out of phase headphone transducers create a far more subtle adverse
> effect than that noticed in loudspeakers, so it is not something
> immediately evident by A-B testing.

** That is 100% fucking BULLSHIT !!!!!!!!!

With any mono signal, the difference is HUGE.

Do exactly what I said you PITA moron.

If the click seems to comes from right inside your head - game over.

If you need more explanation - you do not deserve it.

.... Phil

== 9 of 12 ==
Date: Sat, May 14 2011 5:55 am
From: Patrick

On 13:07 14 May 2011, Dave Plowman (News) wrote:

> In article <Xns9EE57F121FAB96AD265@69.16.185.252>,
> Patrick <invalid@invalid.com> wrote:
>> I have some vinatge headphones (Sennheiser HD424) and want to attach
>> a new plug.
>
>> Which color wires are the positive ones?
>
>> The colors in one of the leads are red & blue and in the other lead
>> black & yellow. (No wire is used as screening - there's just two
>> wires in each lead.)
>
> Black and blue are the commons. Not that it would make any difference
> if you commoned red and yellow.
>
> You can check for sure by unplugging the leads from each actual
> earpiece (red and blue plugs), but be careful to pull on the actual
> plug only. The pins are of slightly different sizes.
>
> Hope you have a source of the muffs for these - they crumble to dust
> quite quickly.

You must know the headphones well because I had long forgotten the leads
plugged into the earpieces. I didn't realize the mini plugs were keyed to
go in only one way around. With that info I could have continuity tested
the colored leads to each of the larger pins on the plugs but you saved me
doing that becauase you have given me the color coding too. Thank you.

You're right about the muffs crumbling. I threw them out. First I'll see
what the cans sound like now and then decide if it's worth getting new
muffs.

It's been instructive to see how many people misunderstood what the
original question was trying to solve and they gave obviously useless, if
not misleading, advice. It's never been the same since Eternal September.

== 10 of 12 ==
Date: Sat, May 14 2011 6:00 am
From: Patrick

On 13:49 14 May 2011, Phil Allison wrote:

>
> "Patrick = another PITA Jerk
>>
>> Out of phase headphone transducers create a far more subtle adverse
>> effect than that noticed in loudspeakers, so it is not something
>> immediately evident by A-B testing.
>
>
> ** That is 100% fucking BULLSHIT !!!!!!!!!
>
> With any mono signal, the difference is HUGE.

There is no phase cancellation like there is for speaker sounds because the
sound from each headphone transducer is interfereing with the other.

Your lack of knowledge is made all the more lamentable by the unwarranted
self-assurance with which you conduct yourself.

> Do exactly what I said you PITA moron.
>
> If the click seems to comes from right inside your head - game over.
>
> If you need more explanation - you do not deserve it.
>
> .... Phil

Your poor knowledge is a liability to this group because your can't
recognize your inadequate understanding even after it has been politely
explained to you.

I hope you don't mind but you are now in my plonk file to spare me reading
your further pitiful lamentations.

== 11 of 12 ==
Date: Sat, May 14 2011 6:17 am
From: "Phil Allison"

"Patrick = another PITA Jerk"
>>>
>>> Out of phase headphone transducers create a far more subtle adverse
>>> effect than that noticed in loudspeakers, so it is not something
>>> immediately evident by A-B testing.
>>
>>
>> ** That is 100% fucking BULLSHIT !!!!!!!!!
>>
>> With any mono signal, the difference is HUGE.
>
> There is no phase cancellation ..

** My god you are one ARROGANT CUNTHEAD !!!

FUCKING TRY IT !!!

The difference is FUCKING HUGE.

You stinking pile of autistic shit.

.... Phil

== 12 of 12 ==
Date: Sat, May 14 2011 6:22 am
From: "Phil Allison"

"Patrick is a Psycho ASSHOLE "

> It's been instructive to see how many people misunderstood what the
> original question was trying to solve and they gave obviously useless, if
> not misleading, advice. It's never been the same since Eternal September.

** Listen here - pal.

You do not need any headphones worn over your ears - YOU need a fucking
bullet between the ears.

Same goes for the retarded bitch that bore you and the donkey that knocked
her up.

Never come back or I will really tear you apart.

.... Phil

==============================================================================
TOPIC: a bios question
http://groups.google.com/group/sci.electronics.repair/t/7c0bc6748d91ff8b?hl=en
==============================================================================

== 1 of 4 ==
Date: Sat, May 14 2011 5:15 am
From: Bob Villa

On May 14, 2:47 am, "Michael A. Terrell" <mike.terr...@earthlink.net>
wrote:

>...and some of my ideas made it into space.
>
>  

I think we have all heard that many times. If you were half as smart
as you think...you wouldn't have bothered to respond, would you?
You remind me of another anal retentive engineer BillW50. God checks-
in with him also...when He's stumped!

== 2 of 4 ==
Date: Sat, May 14 2011 5:41 am
From: "Michael A. Terrell"

Bob Villa wrote:
>
> On May 14, 2:47 am, "Michael A. Terrell" <mike.terr...@earthlink.net>
> wrote:
>
> >...and some of my ideas made it into space.
> >
> >
>
> I think we have all heard that many times. If you were half as smart
> as you think...you wouldn't have bothered to respond, would you?
> You remind me of another anal retentive engineer BillW50. God checks-
> in with him also...when He's stumped!

Don't you have a plugged up toilet calling for your expert help?

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

== 3 of 4 ==
Date: Sat, May 14 2011 6:10 am
From: Bob Villa

On May 14, 7:41 am, "Michael A. Terrell" <mike.terr...@earthlink.net>
wrote:
> Bob Villa wrote:
>
> > On May 14, 2:47 am, "Michael A. Terrell" <mike.terr...@earthlink.net>
> > wrote:
>
> > >...and some of my ideas made it into space.
>
> > I think we have all heard that many times. If you were half as smart
> > as you think...you wouldn't have bothered to respond, would you?
> > You remind me of another anal retentive engineer BillW50. God checks-
> > in with him also...when He's stumped!
>
>    Don't you have a plugged up toilet calling for your expert help?
>
> --
> You can't fix stupid. You can't even put a Band-Aid™ on it, because it's
> Teflon coated.

I'm working on it...but your immense head won't pass.

== 4 of 4 ==
Date: Sat, May 14 2011 6:26 am
From: Bob Villa

On May 14, 7:41 am, "Michael A. Terrell" <mike.terr...@earthlink.net>
wrote:
> Bob Villa wrote:
>
> > On May 14, 2:47 am, "Michael A. Terrell" <mike.terr...@earthlink.net>
> > wrote:
>
> > >...and some of my ideas made it into space.
>
> > I think we have all heard that many times. If you were half as smart
> > as you think...you wouldn't have bothered to respond, would you?
> > You remind me of another anal retentive engineer BillW50. God checks-
> > in with him also...when He's stumped!
>
>    Don't you have a plugged up toilet calling for your expert help?
>
> --
> You can't fix stupid. You can't even put a Band-Aid™ on it, because it's
> Teflon coated.

If you're the same "Michael A. Terrell, Jr." that works for Chrysler I
pity you if your bosses see how immature you are in your responses
here.
This surely applies to you.."I'm a strong relationship builder with
solid leadership skills." From your LinkedIn.

==============================================================================
TOPIC: Samsung 204T syncmaster problem -- not bad caps
http://groups.google.com/group/sci.electronics.repair/t/06f5289f365ccba1?hl=en
==============================================================================

== 1 of 1 ==
Date: Sat, May 14 2011 5:16 am
From: mickgeyver

On May 11, 8:20 pm, "Dav.p." <davi...@tiscali.it> wrote:
> Sorry for my english and my low preparation, but u have checked the voltages on psu output,
> before and after the blak screen? So u can find which board is the problem, it sounds to me
> like a problem with the supply of the converter bd or mostly the lcd panel, find the lcd conn.
> pinout and check if before and after the blackout there is the tipical voltage (5v..?)
> Bye

I'm getting a good clean 13v from the power board and the regulators
on the converter board measure good as well. 5v, 3.3v, 2.5v. The power
good signal from the LM393 on board is in the correct state. I'm now
focusing on the column driver driver board as I seem to recall that
LCDs in general require +/- volts to make the pixels go on and off.
There is some regulator circuitry up there I've yet to explore.

al

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TOPIC: Zimo DCC info ?
http://groups.google.com/group/sci.electronics.repair/t/93fbd838f0d4056e?hl=en
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== 1 of 1 ==
Date: Sat, May 14 2011 6:20 am
From: Geo

On Sat, 14 May 2011 09:09:15 +0100, "N_Cook" <diverse@tcp.co.uk>
wrote:

>cannot find reference to these boards on zimo.at
>
>Has the same main connectors as this
>Bachmann E-Z Command 8 Pin To 21 Pin Adaptor
>http://images.nitrosell.com/product_images/11/2621/thumb-36-559.jpg
>a bit bigger board plus outlet connectors, labelled on board, for LED1,
>LED2, motor, R+ L- = rail pickups ?, Spk = speaker? and Aux1 which the
>output of the 555 via the transitor goes to
>
>21 pinning seems to agree this
>http://www.bobclay.co.uk/smalldcc/dcc33.jpg
>

Some connections here:-
http://www.bachmann.co.uk/pdfs/21pin_plug_wiring_diagram-1.pdf

Are you certain it is a Zimo board?

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