sci.electronics.repair@googlegroups.com

Today's topics:

* another puzzler - 6 messages, 4 authors
http://groups.google.com/group/sci.electronics.repair/t/b80657d8be4c22cd?hl=en
* Are faulty APC UPS's easy repairs or is it throw in the trash? - 1 messages,
1 author
http://groups.google.com/group/sci.electronics.repair/t/afd84408acb5d795?hl=en
* Recycling electronic waste. - 3 messages, 2 authors
http://groups.google.com/group/sci.electronics.repair/t/da679f4848b11be7?hl=en
* Is MTS audio a victim of the latest cable company upgrading? - 1 messages, 1
author
http://groups.google.com/group/sci.electronics.repair/t/60a2fa68004f3c17?hl=en
* Tempest / BatterySpec AGM batteries? - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/9ab59c9b0f69f30d?hl=en
* an improved electrical resistor - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/992c384af74243b1?hl=en
* Allison needs help kicking Meat Plow off Usenet - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/f8481990f5c47309?hl=en
* What happened to my hard drive? - 3 messages, 3 authors
http://groups.google.com/group/sci.electronics.repair/t/5638540b7e458b4e?hl=en
* WHOLESALE all BRAND(UGGBOOTS,SHOES,CLOTHES,HANDBAG,WATCH,JEANS,JERSEY,T-
SHIRT,SHIRTS,HOODY,EYEGLASS,CAP,SHAWL,WALLT) and so on. - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/b919e5f9e1e1dbd9?hl=en
* Shorted Computer Power Supply - 4 messages, 2 authors
http://groups.google.com/group/sci.electronics.repair/t/326dbb3fa5e1a293?hl=en
* free shipping wholesale CLOTHING jacket T-shirt long sleeve suit and hoody(
Franklin Marshall,Monclereiderdown,nike,adidas,a&f,d&g,ed harday,bape,bbc,lv,
gucci,armani,polo, poul smith and so on)/http://www.24hours-online.com/ - 1
messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/7c3916928ab3b357?hl=en
* Randall RG100G3 powerFET amp - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/57d83a13c4840b3c?hl=en
* Thermal Imaging Camera - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/1041c79652cb2ae5?hl=en

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

== 1 of 6 ==
Date: Thurs, May 19 2011 10:28 am
From: Ron Capik

On 5/19/2011 10:54 AM, Carey Carlan wrote:
> spamtrap1888<spamtrap1888@gmail.com> wrote in news:88df2861-f695-449b-
> a558-e3d119b1cb3b@34g2000pru.googlegroups.com:
>
>> Let's look at the case of the ignorant host.
>>
>> There are three possibilities at the start of the game. The
>> probability of each is 1/3
>>
>> _1 2 3_
>> aCGG
>> bGCG
>> cGGC
>>
>> Let us say door 1 represents the contestant's pick. The host can pick
>> either door 2 or door 3
>> Case a: Host picks Door 2. Result: Goat. Contestant switches to Door
>> 3, loses.
>> ..............Host picks Door 3 Result Goat. Contestant switches to
>> Door 2, loses.
>> Case b: Host picks Door 2. Result Car. Contestant loses
>> ..............Host picks Door 3. Result Goat. Contestant switches to
>> Door 2, wins
>> Case c: Host picks Door 2. Result Goat. Contestant switches to Door 3,
>> wins
>> ..............Host picks Door 3 Result Car. Contestant loses.
>>
>> Of the six possible scenarios, the contestant loses four times. If the
>> contestant does not switch after the ignorant host opens a door, the
>> contestant loses four times. If we discard the times the host opens a
>> door with a car behind it, the contestant wins two out of four times
>> when he switches, and two out of four times when he doesn't switch.
>> Therefore, switching picks has no effect on the odds when the host
>> randomly opens one of the other doors.
>
> Then go back to the original where the host knows where the car is and
> the contestant switches.
>
> Case a: Host picks Door 2. Result: Goat. Contestant switches to Door 3,
> loses.
> ..............Host picks Door 3 Result Goat. Contestant switches to
> Door 2, loses.
> Case b: Host picks Door 3. Result Goat. Contestant switches to Door 2,
> wins
> Case c: Host picks Door 2. Result Goat. Contestant switches to Door 3,
> wins
>
> Or the contestant doesn't switch.
>
> Case a: Host picks Door 2. Result: Goat. Contestant keeps Door 1, wins.
> ..............Host picks Door 3 Result Goat. Contestant keeps Door 1,
> wins.
> Case b: Host picks Door 3. Result Goat. Contestant keeps Door 1, loses
> Case c: Host picks Door 2. Result Goat. Contestant keeps Door 1, loses
>
> After the Host opens the door the odds are even. Makes no difference if
> the contestant changes doors or not. This is the same as there only
> being two doors.
>
> The original claim was that the odds remained 1 in 3 even after the Host
> opened the door. I still don't see it.

OK, try this: blow the game up to 100 doors. Your chance of picking
the winning door on the first try is 1 out of 100. Stick with that
choice and each time a zonk is revealed the chance of the prize being
in the remaining group increases. When you get down to two doors the
chance of the prize being behind the other door is 99 out of 100.
The chance of your first pick being correct is still 1 out of 100.

Later...
Ron Capik
--

== 2 of 6 ==
Date: Thurs, May 19 2011 4:06 pm
From: Carey Carlan

Ron Capik <r.capik@verizon.net> wrote in news:XqSdncQ0dq_JzkjQnZ2dnUVZ_q-
dnZ2d@giganews.com:

> OK, try this: blow the game up to 100 doors. Your chance of picking
> the winning door on the first try is 1 out of 100. Stick with that
> choice and each time a zonk is revealed the chance of the prize being
> in the remaining group increases. When you get down to two doors the
> chance of the prize being behind the other door is 99 out of 100.
> The chance of your first pick being correct is still 1 out of 100.

That may have penetrated.

It all hinges on the host knowing in advance which door hides the prize and
revealing known (to him) bad choices. I still don't agree with the logic,
but I think I follow it.

It's called the "Monty Hall problem"? I'll continue to research.

Thank you for your patience.

== 3 of 6 ==
Date: Thurs, May 19 2011 4:15 pm
From: Carey Carlan

Ron Capik <r.capik@verizon.net> wrote in news:XqSdncQ0dq_JzkjQnZ2dnUVZ_q-
dnZ2d@giganews.com:

> OK, try this: blow the game up to 100 doors. Your chance of picking
> the winning door on the first try is 1 out of 100. Stick with that
> choice and each time a zonk is revealed the chance of the prize being
> in the remaining group increases. When you get down to two doors the
> chance of the prize being behind the other door is 99 out of 100.
> The chance of your first pick being correct is still 1 out of 100.

Here's the simple answer that I can understand:

"An even simpler solution is to reason that switching loses if and only if
the player initially picks the car, which happens with probability 1/3, so
switching must win with probability 2/3"

Eureka! That finally makes sense. And yes, everyone was trying to tell me
that.

== 4 of 6 ==
Date: Thurs, May 19 2011 5:23 pm
From: "Bill Graham"

Carey Carlan wrote:
> spamtrap1888 <spamtrap1888@gmail.com> wrote in
> news:88df2861-f695-449b-
> a558-e3d119b1cb3b@34g2000pru.googlegroups.com:
>
>> Let's look at the case of the ignorant host.
>>
>> There are three possibilities at the start of the game. The
>> probability of each is 1/3
>>
>> _1 2 3_
>> aCGG
>> bGCG
>> cGGC
>>
>> Let us say door 1 represents the contestant's pick. The host can pick
>> either door 2 or door 3
>> Case a: Host picks Door 2. Result: Goat. Contestant switches to Door
>> 3, loses.
>> ..............Host picks Door 3 Result Goat. Contestant switches to
>> Door 2, loses.
>> Case b: Host picks Door 2. Result Car. Contestant loses
>> ..............Host picks Door 3. Result Goat. Contestant switches to
>> Door 2, wins
>> Case c: Host picks Door 2. Result Goat. Contestant switches to Door
>> 3, wins
>> ..............Host picks Door 3 Result Car. Contestant loses.
>>
>> Of the six possible scenarios, the contestant loses four times. If
>> the contestant does not switch after the ignorant host opens a door,
>> the contestant loses four times. If we discard the times the host
>> opens a door with a car behind it, the contestant wins two out of
>> four times when he switches, and two out of four times when he
>> doesn't switch. Therefore, switching picks has no effect on the odds
>> when the host randomly opens one of the other doors.
>
> Then go back to the original where the host knows where the car is and
> the contestant switches.
>
> Case a: Host picks Door 2. Result: Goat. Contestant switches to Door
> 3, loses.
> ..............Host picks Door 3 Result Goat. Contestant switches to
> Door 2, loses.
> Case b: Host picks Door 3. Result Goat. Contestant switches to Door 2,
> wins
> Case c: Host picks Door 2. Result Goat. Contestant switches to Door 3,
> wins
>
> Or the contestant doesn't switch.
>
> Case a: Host picks Door 2. Result: Goat. Contestant keeps Door 1,
> wins. ..............Host picks Door 3 Result Goat. Contestant keeps
> Door 1, wins.
> Case b: Host picks Door 3. Result Goat. Contestant keeps Door 1, loses
> Case c: Host picks Door 2. Result Goat. Contestant keeps Door 1, loses
>
> After the Host opens the door the odds are even. Makes no difference
> if the contestant changes doors or not. This is the same as there
> only being two doors.
>
> The original claim was that the odds remained 1 in 3 even after the
> Host opened the door. I still don't see it.

I claqim there are two games. In the first game, you go to the studio, pick
a door, and then go home to wait and see if they call you and tell you that
you either won or lost. Your odds are only 1/3 of winning this game. But if
you play the second game, then you go to the studio and mess around until
the host opens up a door and shown you the donkey behind it. then you can
play the game with 50-50 odds of winning. The only thing I have trouble
explaining is why, in order to play this second game with the better odds,
you have to switch doors. But, in fact, you do have to switch in order to
switch games and take advantage of the better odds.

== 5 of 6 ==
Date: Thurs, May 19 2011 5:39 pm
From: Carey Carlan

"Bill Graham" <weg9@comcast.net> wrote in
news:bvudndZ-Vc0WKUjQnZ2dnUVZ5tidnZ2d@giganews.com:

> I claqim there are two games. In the first game, you go to the studio,
> pick a door, and then go home to wait and see if they call you and
> tell you that you either won or lost. Your odds are only 1/3 of
> winning this game. But if you play the second game, then you go to the
> studio and mess around until the host opens up a door and shown you
> the donkey behind it. then you can play the game with 50-50 odds of
> winning. The only thing I have trouble explaining is why, in order to
> play this second game with the better odds, you have to switch doors.
> But, in fact, you do have to switch in order to switch games and take
> advantage of the better odds.

It's not just 50/50. It's 67/33 in your favor.

Here's another super-simple explanation:

As Cecil Adams puts it (Adams 1990), "Monty is saying in effect: you can
keep your one door or you can have the other two doors."

== 6 of 6 ==
Date: Thurs, May 19 2011 7:17 pm
From: dplatt@radagast.org (Dave Platt)

In article <bvudndZ-Vc0WKUjQnZ2dnUVZ5tidnZ2d@giganews.com>,
Bill Graham <weg9@comcast.net> wrote:

>I claqim there are two games. In the first game, you go to the studio, pick
>a door, and then go home to wait and see if they call you and tell you that
>you either won or lost. Your odds are only 1/3 of winning this game. But if
>you play the second game, then you go to the studio and mess around until
>the host opens up a door and shown you the donkey behind it. then you can
>play the game with 50-50 odds of winning. The only thing I have trouble
>explaining is why, in order to play this second game with the better odds,
>you have to switch doors. But, in fact, you do have to switch in order to
>switch games and take advantage of the better odds.

Yup.

The distinction between the two games is based on the amount of
information available to you at the moment you make your final decision.

In the first game, the only information you have is that every door
available to you to choose has a 1/3 chance of being correct.

In the second game, additional information is given to you by the
host, after you make your initial decision and before you make your
second one. "The prize is *not* behind that door over there."

Actually, you don't *have* to switch doors to "play the second game".
You're playing it from the moment the host gives you this extra
information. It's just that if you ignore this extra information, and
*think* you're still playing the first game (as many people do), you
are more likely than not to make a poor choice in the decision you
make in this second game.

--
Dave Platt <dplatt@radagast.org> AE6EO
Friends of Jade Warrior home page: http://www.radagast.org/jade-warrior
I do _not_ wish to receive unsolicited commercial email, and I will
boycott any company which has the gall to send me such ads!

==============================================================================
TOPIC: Are faulty APC UPS's easy repairs or is it throw in the trash?
http://groups.google.com/group/sci.electronics.repair/t/afd84408acb5d795?hl=en
==============================================================================

== 1 of 1 ==
Date: Thurs, May 19 2011 11:49 am
From: Cydrome Leader

Stephen <i.want.spam@spam.com> wrote:
> Hi, I have two faulty APC BackUPS CS500's each with a different fault.
>
> The first unit will switch to battery when there is a power cut. However,
> when the power is restored, it will not switch back to mains power, it
> remains on the battery till it goes flat.
>
> The 2nd one will not power up when pressing the on/off button on the front
> of the unit.
>
> I have a third working identicial UPS and I have tried the battery out of
> this one in the two faulty units and its NOT the battery.
>
> Are these likely to be an easy repair or shall I flog them on Ebay for
> spares?

I've never found it worthwhile to fix a UPS, but the first one may have
some hope. Is there a bad relay?

==============================================================================
TOPIC: Recycling electronic waste.
http://groups.google.com/group/sci.electronics.repair/t/da679f4848b11be7?hl=en
==============================================================================

== 1 of 3 ==
Date: Thurs, May 19 2011 12:14 pm
From: "Michael A. Terrell"

Ian Field wrote:
>
> "b" <reverend_rogers@yahoo.com> wrote in message
> news:058eb586-4a80-4d09-a7dc-3d5213dc7010@x3g2000yqj.googlegroups.com...
> On May 17, 10:28 pm, "Ian Field" <gangprobing.al...@ntlworld.com>
> wrote:
> > Taking your e-waste to the council tip doesn't allways mean it will be
> > recycled in a lawful manner!
> >
> > http://www.bbc.co.uk/iplayer/episode/b0116gw0/Panorama_Track_My_Trash/
>
> this video by artist chris jordan has some extremely disturbing points
> on the shameful wastefulness of the so-called developed world:
>
> What I'd like to know is how to make some of the scrap PCs come my way.
>
> Firstly I could probably find something better than I've got.
>
> Secondly I could aquire more HDDs to store all the stuff I download.
>
> Thirdly I could make some cash refurbishing and selling any surplus.

Tell people you know that you'll take their old computers and wipe
any personal information from the hard drives. Then ask them to tell
others about you. Be careful, or you'll get so many you won't have room
for them.

--
It's easy to think outside the box, when you have a cutting torch.

== 2 of 3 ==
Date: Thurs, May 19 2011 1:14 pm
From: "Ian Field"

"Michael A. Terrell" <mike.terrell@earthlink.net> wrote in message
news:bKWdnfIcsI7U8UjQnZ2dnUVZ_smdnZ2d@earthlink.com...
>
> Ian Field wrote:
>>
>> "b" <reverend_rogers@yahoo.com> wrote in message
>> news:058eb586-4a80-4d09-a7dc-3d5213dc7010@x3g2000yqj.googlegroups.com...
>> On May 17, 10:28 pm, "Ian Field" <gangprobing.al...@ntlworld.com>
>> wrote:
>> > Taking your e-waste to the council tip doesn't allways mean it will be
>> > recycled in a lawful manner!
>> >
>> > http://www.bbc.co.uk/iplayer/episode/b0116gw0/Panorama_Track_My_Trash/
>>
>> this video by artist chris jordan has some extremely disturbing points
>> on the shameful wastefulness of the so-called developed world:
>>
>> What I'd like to know is how to make some of the scrap PCs come my way.
>>
>> Firstly I could probably find something better than I've got.
>>
>> Secondly I could aquire more HDDs to store all the stuff I download.
>>
>> Thirdly I could make some cash refurbishing and selling any surplus.
>
>
> Tell people you know that you'll take their old computers and wipe
> any personal information from the hard drives. Then ask them to tell
> others about you. Be careful, or you'll get so many you won't have room
> for them.

Most of the people I know want money for their old computer.

Recently I found a Next brand all in one flat screen jobbie in the bin room,
it was all on a single PCB with row upon row of burst electrolytics - but I
scored a 250Gb laptop style HDD and a couple of 1Gb PC2 sticks, didn't have
anything I could test the Celeron CPU in though.

== 3 of 3 ==
Date: Thurs, May 19 2011 3:56 pm
From: "Michael A. Terrell"

Ian Field wrote:
>
> "Michael A. Terrell" <mike.terrell@earthlink.net> wrote in message
> news:bKWdnfIcsI7U8UjQnZ2dnUVZ_smdnZ2d@earthlink.com...
> >
> > Ian Field wrote:
> >>
> >> "b" <reverend_rogers@yahoo.com> wrote in message
> >> news:058eb586-4a80-4d09-a7dc-3d5213dc7010@x3g2000yqj.googlegroups.com...
> >> On May 17, 10:28 pm, "Ian Field" <gangprobing.al...@ntlworld.com>
> >> wrote:
> >> > Taking your e-waste to the council tip doesn't allways mean it will be
> >> > recycled in a lawful manner!
> >> >
> >> > http://www.bbc.co.uk/iplayer/episode/b0116gw0/Panorama_Track_My_Trash/
> >>
> >> this video by artist chris jordan has some extremely disturbing points
> >> on the shameful wastefulness of the so-called developed world:
> >>
> >> What I'd like to know is how to make some of the scrap PCs come my way.
> >>
> >> Firstly I could probably find something better than I've got.
> >>
> >> Secondly I could aquire more HDDs to store all the stuff I download.
> >>
> >> Thirdly I could make some cash refurbishing and selling any surplus.
> >
> >
> > Tell people you know that you'll take their old computers and wipe
> > any personal information from the hard drives. Then ask them to tell
> > others about you. Be careful, or you'll get so many you won't have room
> > for them.
>
> Most of the people I know want money for their old computer.

I know people like that, too, but I know about 25X as many who just
want them out of their way.

> Recently I found a Next brand all in one flat screen jobbie in the bin room,
> it was all on a single PCB with row upon row of burst electrolytics - but I
> scored a 250Gb laptop style HDD and a couple of 1Gb PC2 sticks, didn't have
> anything I could test the Celeron CPU in though.

I picked up a working Dell Insperion 531S w/512 MB of RAM and two
good LCD monitors for free a fewweeks ago. Not only were they given to
me, but the woman insisted on loading them in my truck for me. So far,
she's given me about 20 computers and 30 monitors. :)

--
It's easy to think outside the box, when you have a cutting torch.

==============================================================================
TOPIC: Is MTS audio a victim of the latest cable company upgrading?
http://groups.google.com/group/sci.electronics.repair/t/60a2fa68004f3c17?hl=en
==============================================================================

== 1 of 1 ==
Date: Thurs, May 19 2011 12:16 pm
From: "Michael A. Terrell"

Deke wrote:

> Me, prove it? I believe you were the one who said you had fog so thick it
> blocked satellite service for three days. Prove it, use what ever search
> engine you want, or are capable of using.

Yawn. Go hump someone else's leg.

--
It's easy to think outside the box, when you have a cutting torch.

==============================================================================
TOPIC: Tempest / BatterySpec AGM batteries?
http://groups.google.com/group/sci.electronics.repair/t/9ab59c9b0f69f30d?hl=en
==============================================================================

== 1 of 1 ==
Date: Thurs, May 19 2011 2:28 pm
From: Cydrome Leader

In sci.electronics.repair notme <notme@notme.org> wrote:
>> rest assured that's some no-name chinese battery and quality wasn't a
>> design concern, at all.
>>
>> Stick with panasonic or yuasa if you care about quality. Some of those are
>> from china now, but are less bogus than the rest of the stuff out there.
> [CL]
>
> A statement full of prejudice and innuendo.
>
> Facts?

have fun with your cheapest-found-on-the-internet batteries.

==============================================================================
TOPIC: an improved electrical resistor
http://groups.google.com/group/sci.electronics.repair/t/992c384af74243b1?hl=en
==============================================================================

== 1 of 1 ==
Date: Thurs, May 19 2011 2:33 pm
From: Franc Zabkar

On Tue, 17 May 2011 18:23:23 -0400, mm <NOPSAMmm2005@bigfoot.com> put
finger to keyboard and composed:

>I must have really low standards ...
>My ex-girlfriend tells me that's what I have.

Did you trade up to a girlfriend of a higher standard? ;-)

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.

==============================================================================
TOPIC: Allison needs help kicking Meat Plow off Usenet
http://groups.google.com/group/sci.electronics.repair/t/f8481990f5c47309?hl=en
==============================================================================

== 1 of 1 ==
Date: Thurs, May 19 2011 2:53 pm
From: Meat Plow

On Wed, 18 May 2011 18:49:25 -0500, John Fields wrote:

> n Wed, 18 May 2011 22:00:19 +0000 (UTC), Meat Plow <mhywattt@yahoo.com>
> wrote:
>
>>On Tue, 17 May 2011 19:27:27 -0500, John Fields wrote:
>>
>>> On Tue, 17 May 2011 23:07:00 +0000 (UTC), Meat Plow
>>> <mhywattt@yahoo.com> wrote:
>>>
>>>>On Mon, 16 May 2011 03:13:29 -0400, Michael A. Terrell wrote:
>>>>
>>>>> Phil Allison wrote:
>>>>>>
>>>>>> "Meat Plow"
>>>>>>
>>>>>> ** This FUCKWIT troll needs to be kicked off usenet.
>>>>>>
>>>>>> Who will help ?
>>>>>
>>>>>
>>>>> No one will lift a finger to help you, Phyllis.
>>>>
>>>>I will. Phil, just forward my posts to support@altopia.com with
>>>>complete headers. That's really all you can do unless you plan a trip
>>>>to Ohio to blow my brains out. Here's some friendly advise, buy a one
>>>>way ticket.
>>>
>>> ---
>>> Why do you want to take a sad song and not make it better?
>>>
>>> Phil's not so bad, he just has zero tolerance for bullshit and
>>> responds vehemently when he sees it.
>>>
>>> What's wrong with that?
>>
>>Allison sets traps so he can come back and tell people they need killed,
>>are fuckwits, etc...
>>
>>That's what's wrong.
>
> ---
> I don't see that, I just see someone who gets easily pissed when
> misinformation is proffered as truth by the ignorati.

You don't read SER enough. Phil is famous for setting traps just to come
back and belittle people with his petty filth. Either correct the error
peacefully or shut the fuck up. There is no need for his kind of
vindictiveness when you can be civil and correct any misinformation.
His interactive model in real life would be an instant failure.

--
Live Fast Die Young, Leave A Pretty Corpse

==============================================================================
TOPIC: What happened to my hard drive?
http://groups.google.com/group/sci.electronics.repair/t/5638540b7e458b4e?hl=en
==============================================================================

== 1 of 3 ==
Date: Thurs, May 19 2011 3:10 pm
From: Meat Plow

On Thu, 19 May 2011 08:33:37 -0700, Jeff Liebermann wrote:

> On Thu, 19 May 2011 03:01:06 -0700 (PDT), mike
> <mlightner@survivormail.com> wrote:
>
>
>>it just sits there when the machine is turned on, it spins up but there
>>are no sounds of the heads
>>seeking anything, and the bios finally times out and says there is
>>nothing on the IDE channel it's plugged into - it just sits there,
>>brick-like...
>
> 1. Try it with just the power applied and no IDE cable connected. Can
> you now hear the heads seeking? The IDE interface on the motherboard
> might be fried.
> 2. You might not be able to hear the heads seeking (actually
> self-calibrating) on power on if the machines fans are noisy. I use a
> stethoscope.

That's a great suggestion. Any odd noises, seeking, RPM going up and down
indicates electronics fail or in a few cases a fail to read the
engineering data. I was under the assumption and don't ask why, newer
drives have engineering data written to NVRAM on the drive's board.

--
Live Fast Die Young, Leave A Pretty Corpse

== 2 of 3 ==
Date: Thurs, May 19 2011 6:08 pm
From: "Shaun"

"mike" wrote in message
news:be4e4f45-9aea-42fe-9e99-d347c0440bff@e21g2000yqe.googlegroups.com...

Greetings to all you techies 'out there',

I'm wondering can anyone give me some clues as to what happened to
this Seagate 40 Gb hard drive I was messing around with the other day.

I was using Clonezilla to try to get a newly cloned XP system to boot
on a disk that previously had contained a few different partitions,
one of which had Ubuntu on it. I've used Clonezilla for this before
and it's worked flawlessly - but this time, on the reboot where the OS
is supposed to be initialized (or something), instead, rather than
offer the option to bypass the CD and boot from the hdd, it would go
back to starting up the install option of the XP CD;

The XP partition was the only one recognized by the XP CD, so I used
Part Ed Magic to delete the non-NTFS partitions, thinking that would
fix it, but instead the hdd acts like a brick now, and worse than a
brick, since whichever IDE channel it's plugged into, it prevents
that channel from detecting itself and any other device on that
channel (jumpers set to cable select), causing big time delay in boot
while the BIOS trys and fails to detect said items.

Since Bios can't detect the drive I can't try recloning or even wiping
the drive so I can start over with it - any one have any ideas?

Thanks in advance for any help.

Mikel

It's a 40 Gb drive, very old technology. Just through it out and buy a new
drive. You'll probably get a 500 Gb for $30 some dollars.

Shaun

== 3 of 3 ==
Date: Thurs, May 19 2011 8:25 pm
From: Franc Zabkar

On Thu, 19 May 2011 22:10:27 +0000 (UTC), Meat Plow
<mhywattt@yahoo.com> put finger to keyboard and composed:

>I was under the assumption and don't ask why, newer
>drives have engineering data written to NVRAM on the drive's board.

Head characteristics vary significantly. Some have better frequency
response than others, or they may have variations in the separation
between the read and write elements. To take advantage of the better
performing heads, drive manufacturers implement VBPI (Variable Bits
Per Inch) and VTPI (Variable Tracks Per Inch). The "adaptive" data for
each head need to be stored in NVRAM so that the drive's MCU can find
the SA (System Area).

This article should explain it:
http://hddscan.com/doc/HDD_Tracks_and_Zones.html

You can see the adaptive data for a Seagate 7200.12 here:
http://forum.hddguru.com/seagate-7200-t10899.html

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.

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==============================================================================
TOPIC: Shorted Computer Power Supply
http://groups.google.com/group/sci.electronics.repair/t/326dbb3fa5e1a293?hl=en
==============================================================================

== 1 of 4 ==
Date: Thurs, May 19 2011 7:16 pm
From: Sylvia Else

On 19/05/2011 6:27 AM, KenO wrote:
> I tried to connect a hard drive while the Computer Power Supply(CPS)
> was turned on and the CPS blew.
>
> The CPS is a ilssan model ISP 120SI from a eTower PC.
>
> When I inspected the CPS components and PC board, found the fuse did
> Not blow and only visible damage was a short section of burned wire of
> one inductor coil. If you tell me how will post photos of the CPS for
> your examination.
>
> Searched the forum and found something similar. "computer power supply
> shorted - no apparent cause of death"
> http://groups.google.com/group/sci.electronics.repair/browse_thread/thread/41dcf3e558d25914/bc6a0fb184aa060d?hl=en&lnk=gst&q=blown+computer+power+supply#bc6a0fb184aa060d
>
> What was recommended was
> 1. "Check for fusible resistors (usually only a couple of ohms,
> designed to go open rapidly and with no visible effect)"
>
> Question: If the damage is not visible is there any method of choosing
> what resistors to check?
> Also Is there any way to differentiate fusible resistors from standard
> ones?
>
> Searched for a schematic but so far have not found one.
>
> Thanks
>
> Ken

I'm going to second, or is it third, or fourth, sentiments expressed by
others.

A power supply has safety issues with it. Do something wrong, and it
could burn down your house. How are you going to test it anyway? It
probably won't run without a load? Attach it to your motherboard? Could
be bye-bye MB.

Send it to the tip.

Sylvia.

== 2 of 4 ==
Date: Thurs, May 19 2011 9:37 pm
From: Jeff Liebermann

On Fri, 20 May 2011 12:16:00 +1000, Sylvia Else
<sylvia@not.here.invalid> wrote:

>A power supply has safety issues with it. Do something wrong, and it
>could burn down your house. How are you going to test it anyway? It
>probably won't run without a load? Attach it to your motherboard? Could
>be bye-bye MB.

You mean like this?
<http://802.11junk.com/jeffl/crud/atx-blown.jpg>
It was fairly impressive when it went off in my face. Fortunately, I
was wearing glasses.

--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

== 3 of 4 ==
Date: Thurs, May 19 2011 10:00 pm
From: Sylvia Else

On 20/05/2011 2:37 PM, Jeff Liebermann wrote:
> On Fri, 20 May 2011 12:16:00 +1000, Sylvia Else
> <sylvia@not.here.invalid> wrote:
>
>> A power supply has safety issues with it. Do something wrong, and it
>> could burn down your house. How are you going to test it anyway? It
>> probably won't run without a load? Attach it to your motherboard? Could
>> be bye-bye MB.
>
> You mean like this?
> <http://802.11junk.com/jeffl/crud/atx-blown.jpg>
> It was fairly impressive when it went off in my face. Fortunately, I
> was wearing glasses.
>

Yes, I've been glad to have been wearing safety glasses on occasion when
bits of power transistor have attempted to go into orbit (UPS repair).

Sylvia.

== 4 of 4 ==
Date: Thurs, May 19 2011 10:26 pm
From: Jeff Liebermann

On Fri, 20 May 2011 15:00:42 +1000, Sylvia Else
<sylvia@not.here.invalid> wrote:

>On 20/05/2011 2:37 PM, Jeff Liebermann wrote:
>> On Fri, 20 May 2011 12:16:00 +1000, Sylvia Else
>> <sylvia@not.here.invalid> wrote:
>>
>>> A power supply has safety issues with it. Do something wrong, and it
>>> could burn down your house. How are you going to test it anyway? It
>>> probably won't run without a load? Attach it to your motherboard? Could
>>> be bye-bye MB.
>>
>> You mean like this?
>> <http://802.11junk.com/jeffl/crud/atx-blown.jpg>
>> It was fairly impressive when it went off in my face. Fortunately, I
>> was wearing glasses.

>Yes, I've been glad to have been wearing safety glasses on occasion when
>bits of power transistor have attempted to go into orbit (UPS repair).
>Sylvia.

[Q] What's the difference between a battery and an explosive?
[A] Energy density.
Batteries
Lead Acid 150,000 Joules/Kg
Li-Ion 460,000 Joules/Kg
Lithium Thionyl Chloride 2,000,000 Joules/Kg
Explosives
TNT 4,700,000 Joules/Kg
We're getting there with batteries.

--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

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==============================================================================
TOPIC: Randall RG100G3 powerFET amp
http://groups.google.com/group/sci.electronics.repair/t/57d83a13c4840b3c?hl=en
==============================================================================

== 1 of 1 ==
Date: Thurs, May 19 2011 10:40 pm
From: "Phil Allison"

"Nutcase Kook "
>
> "no name", not Hitachi ,2Sk1058

** Only Hitachi or Renesas make them.

Sometimes logos are omitted from the packs.

> failed in low power practise use.

** How the fuck would you know that ?

FFS - report customer stories as STORIES !!

What is the nature of the failure?

Why do you EDIT all the facts out of your bullshit posts.

... Phil

==============================================================================
TOPIC: Thermal Imaging Camera
http://groups.google.com/group/sci.electronics.repair/t/1041c79652cb2ae5?hl=en
==============================================================================

== 1 of 1 ==
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