sci.electronics.repair - 25 new messages in 8 topics - digest

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

sci.electronics.repair@googlegroups.com

Today's topics:

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

== 1 of 9 ==
Date: Thurs, May 12 2011 12:58 pm
From: "Soundhaspriority"

"Suppose you're on a game show, and you're given the choice of three doors:
Behind one door is a car; behind the others, goats. You pick a door, say No.
1, and the host, who knows what's behind the doors, opens another door, say
No. 3, which has a goat. He then says to you, "Do you want to pick door No.
2?" Is it to your advantage to switch your choice?"

The above is a famous problem. I've left out the attribution to give you a
few minutes (or forever, if you want) to enjoy it.

Bob Morein
(310) 237-6511

== 2 of 9 ==
Date: Thurs, May 12 2011 1:02 pm
From: John Williamson

Bill Graham wrote:
> Kevin Krell wrote:
>> On 5/11/2011 2:07 PM, William Sommerwerck wrote:
>>> As I'm working, "Let's Make a Deal" is on. A woman has four rolls of
>>> a die to get 10 points or more. She gets 8 on the first two rolls.
>>> So... does she or the host say "No need to roll again?" No! She
>>> actually rolls the die!
>> OK, guess I'm mathematically challenged, then. Of course she has to
>> roll again, at least once more (and possibly twice if #3 is a one), as
>> the 8 is still less than the 10 you're saying she requires.
>
> No, you are not mathematically challenged. You are absolutely correct.
> So, there are at least two of us who can read.

I've not seen the show, as I'm on the East of the Atlantic. The fact is
that a win is not inevitable with the score given. The di(c)e *could*
fall off the table on one or more subsequent rolls, for no score, unless
it's a sealed die shaker. I'd agree it's almost vanishingly unlikely....

As pointed out by another poster, the show rules (which may be known
only to the contestants and the show crew) might state that rolling must
continue until the needed score is reached or exceeded.

--
Tciao for Now!

John.

== 3 of 9 ==
Date: Thurs, May 12 2011 1:10 pm
From: John Williamson

Soundhaspriority wrote:
> "Suppose you're on a game show, and you're given the choice of three
> doors: Behind one door is a car; behind the others, goats. You pick a
> door, say No. 1, and the host, who knows what's behind the doors, opens
> another door, say No. 3, which has a goat. He then says to you, "Do you
> want to pick door No. 2?" Is it to your advantage to switch your choice?"
>
> The above is a famous problem. I've left out the attribution to give you
> a few minutes (or forever, if you want) to enjoy it.
>
> Bob Morein
> (310) 237-6511
<Spoiler alert>

Yes, by about 50%, and that fact has caused a *lot* of argument and
discussion in another group that I frequent.

--
Tciao for Now!

John.

== 4 of 9 ==
Date: Thurs, May 12 2011 1:30 pm
From: "Michael A. Terrell"

Sylvia Else wrote:
>
> On 12/05/2011 10:29 PM, PeterD wrote:
> > On 5/12/2011 2:07 AM, Sylvia Else wrote:
> >> On 12/05/2011 4:03 PM, Kevin Krell wrote:
> >>> On 5/11/2011 2:07 PM, William Sommerwerck wrote:
> >>>> As I'm working, "Let's Make a Deal" is on. A woman has four rolls of a
> >>>> die
> >>>> to get 10 points or more. She gets 8 on the first two rolls. So...
> >>>> does she
> >>>> or the host say "No need to roll again?" No! She actually rolls the
> >>>> die!
> >>>>
> >>> OK, guess I'm mathematically challenged, then. Of course she has to roll
> >>> again, at least once more (and possibly twice if #3 is a one), as the 8
> >>> is still less than the 10 you're saying she requires.
> >>
> >> But she's bound to get at least 1 on each subsequent roll, so no matter
> >> what happens she wins. Accordingly, as the OP indicated, there's no need
> >> to bother.
> >>
> >> Sylvia
> >
> > You need to understand the rules of game TV to understand why they did
> > what they did. It was not an option to 'give it to her', she was
> > required to roll.
> >
>
> Rules?
>
> Sylvia.

http://en.wikipedia.org/wiki/The_$64,000_Question
--
You can't fix stupid. You can't even put a Band-Aid™ on it, because it's
Teflon coated.

== 5 of 9 ==
Date: Thurs, May 12 2011 2:01 pm
From: "William Sommerwerck"

The "Let's Make a Deal" paradox has been argued about for decades.

The correct answer is that changing your selection is statistically likely
to result in getting the "good" prize 2/3 of the time.

The simplest explanation is that the contestant chooses a curtain with a bad
prize 2/'3 of the time, and the host always reveals one of the bad prizes
behind a different curtain. Ergo, 2/3 of the time the good prize is behind
the unchosen/unopened curtain, and you should switch.

QED.

== 6 of 9 ==
Date: Thurs, May 12 2011 3:10 pm
From: "Soundhaspriority"

"William Sommerwerck" <grizzledgeezer@comcast.net> wrote in message
news:iqhhrp$1en$1@dont-email.me...
> The "Let's Make a Deal" paradox has been argued about for decades.
>
> The correct answer is that changing your selection is statistically likely
> to result in getting the "good" prize 2/3 of the time.
>
> The simplest explanation is that the contestant chooses a curtain with a
> bad
> prize 2/'3 of the time, and the host always reveals one of the bad prizes
> behind a different curtain. Ergo, 2/3 of the time the good prize is behind
> the unchosen/unopened curtain, and you should switch.
>
> QED.
>
Aw, John, you spilled the beans ;)

Bob Morein
(310) 237-6511

== 7 of 9 ==
Date: Thurs, May 12 2011 5:57 pm
From: Sylvia Else

On 13/05/2011 3:14 AM, PeterD wrote:
> On 5/12/2011 10:52 AM, Sylvia Else wrote:
>> On 12/05/2011 10:29 PM, PeterD wrote:
>>> On 5/12/2011 2:07 AM, Sylvia Else wrote:
>>>> On 12/05/2011 4:03 PM, Kevin Krell wrote:
>>>>> On 5/11/2011 2:07 PM, William Sommerwerck wrote:
>>>>>> As I'm working, "Let's Make a Deal" is on. A woman has four rolls
>>>>>> of a
>>>>>> die
>>>>>> to get 10 points or more. She gets 8 on the first two rolls. So...
>>>>>> does she
>>>>>> or the host say "No need to roll again?" No! She actually rolls the
>>>>>> die!
>>>>>>
>>>>> OK, guess I'm mathematically challenged, then. Of course she has to
>>>>> roll
>>>>> again, at least once more (and possibly twice if #3 is a one), as
>>>>> the 8
>>>>> is still less than the 10 you're saying she requires.
>>>>
>>>> But she's bound to get at least 1 on each subsequent roll, so no matter
>>>> what happens she wins. Accordingly, as the OP indicated, there's no
>>>> need
>>>> to bother.
>>>>
>>>> Sylvia
>>>
>>> You need to understand the rules of game TV to understand why they did
>>> what they did. It was not an option to 'give it to her', she was
>>> required to roll.
>>>
>>
>> Rules?
>>
>> Sylvia.
>
> Yes, the federal government has rules in place for game shows, in effect
> since the early 60s, following a number of scandals where contestants
> were given 'special' treatment.

Any details? I note (from promos and 'news' items, not from watching
them) that contestants in Biggest Slob and Master Burgerflipper seem to
come back after being eliminated.

Sylvia.

== 8 of 9 ==
Date: Thurs, May 12 2011 6:55 pm
From: "Trevor"

"Bill Graham" <weg9@comcast.net> wrote in message
news:w5SdncQfzLWPqVHQnZ2dnUVZ5gudnZ2d@giganews.com...
> William Sommerwerck wrote:
>> As I'm working, "Let's Make a Deal" is on. A woman has four rolls of
>> a die to get 10 points or more. She gets 8 on the first two rolls.
>> So... does she or the host say "No need to roll again?" No! She
>> actually rolls the die!
>
> Of course she rolls the die. She has to, because she needs to get ten, and
> she only has eight. So, by the rules of the game she has to keep rolling
> until she gets the ten she needs, or runs out of rolls. Getting a good
> start is not the same as winning.

I think you miss the point, in this case it's "Not possibly being able to
lose (unless the dice are fixed!) is not the same as winning".
They MUST show her getting 10 so the "arithmetically challenged people"
mentioned in the header can understand what's gong on. Besides they probably
had more air time to fill! :-)

Trevor.

== 9 of 9 ==
Date: Thurs, May 12 2011 6:57 pm
From: "Trevor"

"Bill Graham" <weg9@comcast.net> wrote in message
news:xZidnX2kQ6hHqVHQnZ2dnUVZ5g6dnZ2d@giganews.com...
> Kevin Krell wrote:
>> On 5/11/2011 2:07 PM, William Sommerwerck wrote:
>>> As I'm working, "Let's Make a Deal" is on. A woman has four rolls of
>>> a die to get 10 points or more. She gets 8 on the first two rolls.
>>> So... does she or the host say "No need to roll again?" No! She
>>> actually rolls the die!
>> OK, guess I'm mathematically challenged, then. Of course she has to
>> roll again, at least once more (and possibly twice if #3 is a one), as
>> the 8 is still less than the 10 you're saying she requires.
>
> No, you are not mathematically challenged. You are absolutely correct. So,
> there are at least two of us who can read.

Or perhaps don't realise the lowest number on a Die(ce) is one. So she
hasn't actually won yet, but she simply can't lose.

Trevor.

==============================================================================
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 12 2011 1:28 pm
From: "Michael A. Terrell"

Deke wrote:
>
> Universal Cable rule # 1- They don't care about audio, or visual quality,
> and will always be geared to please the lowest common denominator.

File a complaint with the FCC at FCCInfo@fcc.gov

> Universal Cable rule # 2- Even if they DO have a high quality signal
> available to them, they will compress/mangle it (1080i to 720i, 5.1 to
> distorted L-R mono) to save bandwidth.

File a complaint with the FCC at FCCInfo@fcc.gov

>Universal Cable rule #3- Cable companies don't care if you have a $10,000
> home entertainment center. Can you see a picture? Good!, and can you hear
> it? Good!, will always be good enough for them.

File a complaint with the FCC at FCCInfo@fcc.gov

> Universal Cable rule #4- Charge maximum amount of money for the poorest
> choice of channels, with the worst possible signal quality. Increase rates
> at will.

Rate increases must be approved by the franchising authority. They
can not increase rates 'At will'.

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

==============================================================================
TOPIC: WTF is a Chemical Fuse??
http://groups.google.com/group/sci.electronics.repair/t/a3db5c8568912df1?hl=en
==============================================================================

== 1 of 3 ==
Date: Thurs, May 12 2011 1:42 pm
From: "Michael A. Terrell"

Phil Allison wrote:
>
> "klem kedidelhopper"
>
> " Klem the Kiddle Fiddler "
>
> Sorry Phil that I
> blew right past your response however I guess I'd have to wonder if
> YOU read what I wrote. I thought that I was clearly asking about a
> Chemical or "pico" type fuse, not a polyswitch.
>
> ** Where did you get the name " chemical fuse " from - eh ?
>
> Did you simply invent it ???
>
> A "Pico" fuse is simply a wire fuse in a package like a resistor.
>
> Over to YOU - cunthead.

Typical ignorant spew from Phyllis, when her PMS (Pathetic Mouthy
Slurs) flares up.

Pico fuses also came in a round glass cylinder with two pins on one
end to plug them into special sockets. Some were ceramic sockets & had a
screw on ceramic lid. I used these in Vikoa CATV line amplifiers in the
early '70s. It was years before I ever saw the axial versions. Pico is
the name of the series, not one product.

The third image in the header at the URL below shows a newer version
of the plug in Pico fuse.

<http://www.littelfuse.com/products/Technology/Fuses/Product+Category/PICO%26reg%3B+Type/search.html?No=0&RT=Part&PerPage=125&LFSESSION=HKdAY2vj4R&Compare=>

Now go take your medication and lay down for a week or two, Phyllis.

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

== 2 of 3 ==
Date: Thurs, May 12 2011 6:03 pm
From: Meat Plow

On Thu, 12 May 2011 21:09:55 +1000, Phil Allison wrote:

> "klem kedidelhopper"
>
> " Klem the Kiddle Fiddler "
>
> Sorry Phil that I
> blew right past your response however I guess I'd have to wonder if YOU
> read what I wrote. I thought that I was clearly asking about a Chemical
> or "pico" type fuse, not a polyswitch.
>
>
> ** Where did you get the name " chemical fuse " from - eh ?
>
> Did you simply invent it ???
>
> A "Pico" fuse is simply a wire fuse in a package like a resistor.
>
> Over to YOU - cunthead.
>
>
>
> .... Phil

Piss off Phil. Your rhetoric is no longer valid.

--
Live Fast Die Young, Leave A Pretty Corpse

== 3 of 3 ==
Date: Thurs, May 12 2011 8:12 pm
From: "Phil Allison"

"Meat Plow"

** All you are is a vile POX on this NG.

Fuck off and DIE - you stinking TROLL !!

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

== 1 of 6 ==
Date: Thurs, May 12 2011 2:21 pm
From: "Charlie"

There used to be groups where one could get a cogent answer about PCs
acting up.
I'll try here.

I have a friend with an E-Machines PC.
OS is XP home. It looked to me that the HD had failed.
I confirmed this to my mind by using a sata to usb adapter and found that
the old HD could not be accessed.
I checked that my setup was ok using other drives that were on hand.

So I had her get a replacement HD. Two restore disks are on hand so I
charged ahead feeling that all would be well.

Phoenix BIOS is set to start from the CD first and the HD next.

But when trying to start the recovery from the CD. there are two choices.
1) restore the system.
or
2) start from the CD

Choice 1 warns that all data will be lost. That's ok. It's a new HD
So I select Y go do it and the system hangs
Trying choice 2 brings an unexpected result. The system tries to start from
a nonexistent A drive.

This box has no A drive. Looking through the setup panels show no mention of
a floppy drive.

What now?

Charlie

== 2 of 6 ==
Date: Thurs, May 12 2011 2:34 pm
From: spamtrap1888

On May 12, 2:21 pm, "Charlie" <l...@thestation.com> wrote:
> There used to be groups where one could get a cogent answer about PCs
> acting up.
> I'll try here.
>
> I have a friend with an E-Machines PC.
> OS is XP home. It looked to me that the HD had failed.
> I confirmed this to my mind by using a sata to usb adapter and found that
> the old HD could not be accessed.
> I checked that my setup was ok using other drives that were on hand.
>
> So I had her get a replacement HD. Two restore disks are on hand so I
> charged ahead feeling that all would be well.
>
> Phoenix BIOS is set to start from the CD first and the HD next.
>
> But when trying to start the recovery from the CD. there are two choices.
> 1) restore the system.
> or
> 2) start from the CD
>
> Choice 1 warns that all data will be lost. That's ok. It's a new HD
> So I select Y go do it and the system hangs
> Trying choice 2 brings an unexpected result. The system tries to start from
> a nonexistent A drive.
>
> This box has no A drive. Looking through the setup panels show no mention of
> a floppy drive.
>
> What now?
>

Reflash the BIOS.

== 3 of 6 ==
Date: Thurs, May 12 2011 2:58 pm
From: Sjouke Burry

Charlie wrote:
> There used to be groups where one could get a cogent answer about PCs
> acting up.
> I'll try here.
>
> I have a friend with an E-Machines PC.
> OS is XP home. It looked to me that the HD had failed.
> I confirmed this to my mind by using a sata to usb adapter and found that
> the old HD could not be accessed.
> I checked that my setup was ok using other drives that were on hand.
>
> So I had her get a replacement HD. Two restore disks are on hand so I
> charged ahead feeling that all would be well.
>
> Phoenix BIOS is set to start from the CD first and the HD next.
>
> But when trying to start the recovery from the CD. there are two choices.
> 1) restore the system.
> or
> 2) start from the CD
>
> Choice 1 warns that all data will be lost. That's ok. It's a new HD
> So I select Y go do it and the system hangs
> Trying choice 2 brings an unexpected result. The system tries to start from
> a nonexistent A drive.
>
> This box has no A drive. Looking through the setup panels show no mention of
> a floppy drive.
>
> What now?
>
> Charlie
>
>
>
>
Bootable cd's emulate a floppy A: with boot software, so allow boot
from A

== 4 of 6 ==
Date: Thurs, May 12 2011 3:32 pm
From: Ken

Is there really data on the CD to restore the HD??? Some computers
depend upon the restoration partition on the HD to retrieve the data
necessary for restoration. In other words, the CD is simply a boot
vehicle that will look to the HD for the restoration data it needs.
Read the CD and see if it has several directories of data that could be
what it needs.

Another question would be is the new HD partitioned and formatted? I
ran the restoration DVD on a HP computer and it would not restore. It
gave little reason for not doing so. What it needed was partitioning
and formatting. One would have thought the restoration process would
have been prepared to do that, but it was not.

== 5 of 6 ==
Date: Thurs, May 12 2011 4:26 pm
From: "Michael A. Terrell"

Ken wrote:
>
> Is there really data on the CD to restore the HD??? Some computers
> depend upon the restoration partition on the HD to retrieve the data
> necessary for restoration. In other words, the CD is simply a boot
> vehicle that will look to the HD for the restoration data it needs.
> Read the CD and see if it has several directories of data that could be
> what it needs.
>
> Another question would be is the new HD partitioned and formatted? I
> ran the restoration DVD on a HP computer and it would not restore. It
> gave little reason for not doing so. What it needed was partitioning
> and formatting. One would have thought the restoration process would
> have been prepared to do that, but it was not.

My eMachines W3118 came with a restoration DVD for the factory
installed XP home, which includes all the drivers.

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

== 6 of 6 ==
Date: Thurs, May 12 2011 9:49 pm
From: "Geoffrey S. Mendelson"

Michael A. Terrell wrote:
> My eMachines W3118 came with a restoration DVD for the factory
> installed XP home, which includes all the drivers.

Many computers that include disks, and all that don't have some way of
creating a restore disk from the install partition or files.

It depends upon the manufacturer how insistant it is. One brand I saw would
not let you do anything with the newly installed windows system until the
burning of DVDs (install Windows, provided apps) was finished.

Another made you click "not now" every hour until you did.

Other's just gave you a one time notice, it was up to you to figure out how
to do it if you canceled it.

One even included blank DVDs.

The one I am using now, and MSI Wind U100, included Hebrew Windows on the hard
drive with an insistant option to burn disks and a set of English DVDs. Note
that the computer did not have a DVD or optical drive of any kind.

Apple used to include installation DVDs of MacOS with all of their computers,
including the MacBook Air line, which has no optical drive. Now they include
a USB memory stick with it. I expect netbook manufacturers will do the same for
Windows too.

Back to the original question, does the BIOS offer a boot menu, or a setup key?

With the boot menu, you can just choose the DVD drive, with a setup menu,
which comes up after your press the key (eventually), you can change the
boot order to include the DVD drive first.

BTW, did you try the A drive option? It might try to boot from the floppy and
after giving up try the DVD.

Geoff.xsxc
--
Geoffrey S. Mendelson N3OWJ/4X1GM
Occam's Razor does not apply to electronics. If something won't turn on, it's
not likely to be the power switch.

==============================================================================
TOPIC: Magnetic USB FOB cover?
http://groups.google.com/group/sci.electronics.repair/t/0d4db43fa8f4ed20?hl=en
==============================================================================

== 1 of 3 ==
Date: Thurs, May 12 2011 4:09 pm
From: Robert Macy

On May 11, 4:01 pm, Meat Plow <mhywa...@yahoo.com> wrote:
> On Mon, 09 May 2011 13:58:44 -0700, David Nebenzahl wrote:
> > On 5/8/2011 11:08 PM vjp2...@at.BioStrategist.dot.dot.com spake thus:
>
> >> uber-obsessive.. so I did that.. I took it out of my USB box and put it
> >> with pencils.. much obliged
>
> > Still wondering what made you think a magnet would affect an EPROM (or
> > is it EEPROM?) like that in any way. Maybe you're just used to dealing
> > with magnetic storage media?
>
> > Now, if you took the thing with you into a MRI machine, I guess all bets
> > would be off, but otherwise ...
>
> It's a specif type of EEPROM than can be addressed (read/write) by
> blocks. The old EEPROM had to be erased all at once then reprogrammed.
> Like the BIOS in a PC. When you update it, the addressable part is
> completely erased and then written with fresh data even though it's
> just adding some features and replacing some buggy code.
>
> But you are correct. It would take a lot of EMI energy to corrupt data
> on a EEPROM.
>
> --
> Live Fast Die Young, Leave A Pretty Corpse

the old airport security x-rays used to 'reset' [scramble data]
eeproms ...had a friend learn the hard way on a trip to demo software
in Japan

== 2 of 3 ==
Date: Thurs, May 12 2011 4:17 pm
From: Robert Macy

On May 8, 10:03 am, vjp2...@at.BioStrategist.dot.dot.com wrote:
> It seems counterintuitive that the cap to a wooden USB fob handed
> out at a trade show snaps on like it is magnetic.. is it?
> No risk or erasing it or other media it is near?
>
> - = -
> Vasos Panagiotopoulos, Columbia'81+, Reagan, Mozart, Pindus, BioStrategist
> http://www.panix.com/~vjp2/vasos.htm
> ---{Nothing herein constitutes advice. Everything fully disclaimed.}---
> [Homeland Security means private firearms not lazy obstructive guards]
> [Urb sprawl confounds terror] [Phooey on GUI: Windows for subprime Bimbos]

depending on the coercivity of the media, 'weak' magnetic fields won't
affect the sotrage much, at all. but those new rare-earth magnets
will do a lot of damage to the data and don't have to get very close.

== 3 of 3 ==
Date: Thurs, May 12 2011 5:57 pm
From: Meat Plow

On Thu, 12 May 2011 16:09:59 -0700, Robert Macy wrote:

> On May 11, 4:01 pm, Meat Plow <mhywa...@yahoo.com> wrote:
>> On Mon, 09 May 2011 13:58:44 -0700, David Nebenzahl wrote:
>> > On 5/8/2011 11:08 PM vjp2...@at.BioStrategist.dot.dot.com spake thus:
>>
>> >> uber-obsessive.. so I did that.. I took it out of my USB box and put
>> >> it with pencils.. much obliged
>>
>> > Still wondering what made you think a magnet would affect an EPROM
>> > (or is it EEPROM?) like that in any way. Maybe you're just used to
>> > dealing with magnetic storage media?
>>
>> > Now, if you took the thing with you into a MRI machine, I guess all
>> > bets would be off, but otherwise ...
>>
>> It's a specif type of EEPROM than can be addressed (read/write) by
>> blocks. The old EEPROM had to be erased all at once then reprogrammed.
>> Like the BIOS in a PC. When you update it, the addressable part is
>> completely erased and then written with fresh data even though it's
>> just adding some features and replacing some buggy code.
>>
>> But you are correct. It would take a lot of EMI energy to corrupt data
>> on a EEPROM.
>>
>> --
>> Live Fast Die Young, Leave A Pretty Corpse
>
> the old airport security x-rays used to 'reset' [scramble data] eeproms
> ...had a friend learn the hard way on a trip to demo software in Japan

Yep I would consider that a substantial amount more EMI/RFI than a mere
magnetic cap on a modern flash FOB.

--
Live Fast Die Young, Leave A Pretty Corpse

==============================================================================
TOPIC: Teac AG500
http://groups.google.com/group/sci.electronics.repair/t/cb43b508a4ac5e62?hl=en
==============================================================================

== 1 of 1 ==
Date: Thurs, May 12 2011 5:22 pm
From: "Arfa Daily"

>>
>>
> Hello all, The IC is LC7818. I hope that helps point us in the right
> direction. I do have a scope but it is unreliable and am hoping to solve
> the issue without it.
> Thanks for all the help,
> Gary
>

Ah. A 7818. That one does indeed have drives for indicator LEDs, in which
case I concur with abrsvc's contention that this is the most likely cause of
the problem.

Arfa

==============================================================================
TOPIC: Peavey PV2000 slave amp
http://groups.google.com/group/sci.electronics.repair/t/9121270861344413?hl=en
==============================================================================

== 1 of 1 ==
Date: Thurs, May 12 2011 6:01 pm
From: Meat Plow

On Thu, 12 May 2011 14:44:06 +0100, N_Cook wrote:

> Ok last summer, stored in an outbuilding over winter , got down to -15
> deg C southern England last December.
> Now one channel shows protect LED on . What does DOT (TM) accronym?
> stand for ? and anyone any inkling what would be most ssceptible to
> cold/condensation? Nothing seems amiss cold testing on that channel, not
> powered up , monitored , yet. I have a schematic for it, a lot of
> socketed op amps in that area, so changing them and the sockets would
> be a good start methinks.

Reseat the socketed devices. Temperature isn't a factor, humidity more
likely the cause of slight corrosion of the pinned devices.

--
Live Fast Die Young, Leave A Pretty Corpse

==============================================================================
TOPIC: Where is Klem ??
http://groups.google.com/group/sci.electronics.repair/t/e9ebb396f18b6ba5?hl=en
==============================================================================

== 1 of 1 ==
Date: Thurs, May 12 2011 7:37 pm
From: "Phil Allison"

" Klem the Kiddie Fiddler "

Sorry Phil that I
blew right past your response however I guess I'd have to wonder if
YOU read what I wrote. I thought that I was clearly asking about a
Chemical or "pico" type fuse, not a polyswitch.

** Where did you get the name " chemical fuse " from - eh ?

Did you simply invent it ???

A "Pico" fuse is simply a wire fuse in a package like a resistor.

Over to YOU - you miserable damn LIAR.

.... Phil

==============================================================================

You received this message because you are subscribed to the Google Groups "sci.electronics.repair"
group.

To post to this group, visit http://groups.google.com/group/sci.electronics.repair?hl=en

To unsubscribe from this group, send email to sci.electronics.repair+unsubscribe@googlegroups.com

To change the way you get mail from this group, visit:
http://groups.google.com/group/sci.electronics.repair/subscribe?hl=en

To report abuse, send email explaining the problem to abuse@googlegroups.com

==============================================================================
Google Groups: http://groups.google.com/?hl=en

Electronics

sci.electronics.repair - 25 new messages in 8 topics - digest

No Response to "sci.electronics.repair - 25 new messages in 8 topics - digest"

Post a Comment

Blog Roll

Blog Archive