sci.electronics.repair - 25 new messages in 10 topics - digest

sci.electronics.repair
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Today's topics:

==============================================================================
TOPIC: Isopropyl Alcohol for Cleaning Flux
http://groups.google.com/group/sci.electronics.repair/t/a7a3663fd81cf5bd?hl=en
==============================================================================

== 1 of 12 ==
Date: Mon, Jul 26 2010 10:43 am
From: David Nebenzahl

On 7/26/2010 10:30 AM Meat Plow spake thus:

> On Mon, 26 Jul 2010 17:57:25 +0100, Arfa Daily wrote:
>
>> "Joe" <none@given.now> wrote in message
>> news:none-2507101756580001@dialup-4.231.173.83.dial1.losangeles1.level3.net...
>>
>>> In one of the posts about solder, somebody mentioned CVS Drug Store for
>>> 91% isopropyl alcohol.
>>>
>>> I just called a CVS, it's $2.79 for 16 ounces and $2.99 for 32 ounces.
>>> That's 20 cents more for double the 16 ounce size. (This is in southern
>>> California).
>>
>> 91% IPA is not usually considered to be 'electronics grade', which
>> should be 99.7% minimum. It's also not the most appropriate stuff for
>> cleaning a lot of flux, which requires a proper defluxing agent such as
>> Electrolube Deflux 160
>
> 91 leaves a bit of residue in certain cases. After reading the
> ingredients on a can of Flux-Off spray flux stripper I thought why not
> just use 91 isoprop. It usually does work in conjunction with a
> toothbrush. But like I said can leave a residue.

Why mess around with isopropyl alcohol at all, since all of it contains
*some* water? Use denatured alcohol (methanol) instead, in a
tightly-capped container to guard against absorbing moisture.

--
The fashion in killing has an insouciant, flirty style this spring,
with the flaunting of well-defined muscle, wrapped in flags.

- Comment from an article on Antiwar.com (http://antiwar.com)

== 2 of 12 ==
Date: Mon, Jul 26 2010 11:26 am
From: zekfrivo@zekfrivolous.com (GregS)

In article <4c4dc8ea$0$2390$822641b3@news.adtechcomputers.com>, David Nebenzahl <nobody@but.us.chickens> wrote:
>On 7/26/2010 10:30 AM Meat Plow spake thus:
>
>> On Mon, 26 Jul 2010 17:57:25 +0100, Arfa Daily wrote:
>>
>>> "Joe" <none@given.now> wrote in message
>>>
> news:none-2507101756580001@dialup-4.231.173.83.dial1.losangeles1.level3.net...
> >>
>>>> In one of the posts about solder, somebody mentioned CVS Drug Store for
>>>> 91% isopropyl alcohol.
>>>>
>>>> I just called a CVS, it's $2.79 for 16 ounces and $2.99 for 32 ounces.
>>>> That's 20 cents more for double the 16 ounce size. (This is in southern
>>>> California).
>>>
>>> 91% IPA is not usually considered to be 'electronics grade', which
>>> should be 99.7% minimum. It's also not the most appropriate stuff for
>>> cleaning a lot of flux, which requires a proper defluxing agent such as
>>> Electrolube Deflux 160
>>
>> 91 leaves a bit of residue in certain cases. After reading the
>> ingredients on a can of Flux-Off spray flux stripper I thought why not
>> just use 91 isoprop. It usually does work in conjunction with a
>> toothbrush. But like I said can leave a residue.
>
>Why mess around with isopropyl alcohol at all, since all of it contains
>*some* water? Use denatured alcohol (methanol) instead, in a
>tightly-capped container to guard against absorbing moisture.

That would be fine if you used it in ZERO humidity.
Its not worth the trouble using 99.99%
95% is a very good figure. I actually use the NON-denatured stuff.
I don't buy it, but the medical labs buy it.. Its safer than 99%
stuff due to dryers contamination as far as drinking. The
The denatured stuff probably has more residue.

Seems to me methanol has the ability to harm some materials
its used on.

I also have a 4L bottle of isoproypal 99.5% .001% residue
which is nice. I will ALWAYS have water on the board
after cleaning just from room humidity. I usually take
a hot air gun or pistol to heat dry the board
or put it under an incandesant light bulb.

A possible source for cleaning boards, gas tank alcohol, "dry gas"
probably mostly isopropal alcohol, probably 98% or better.

greg

== 3 of 12 ==
Date: Mon, Jul 26 2010 11:49 am
From: "Geoffrey S. Mendelson"

GregS wrote:

> 95% is a very good figure. I actually use the NON-denatured stuff.

How about the drinking stuff? (95% "grain" alcohol).

Here I can by a "fifth" (750ml) for less than 250ml of 70% Isopropyl.

Geoff.

--
Geoffrey S. Mendelson N3OWJ/4X1GM
To help restaurants, as part of the "stimulus package", everyone must order
dessert. As part of the socialized health plan, you are forbidden to eat it. :-)

== 4 of 12 ==
Date: Mon, Jul 26 2010 11:59 am
From: David Nebenzahl

On 7/26/2010 11:49 AM Geoffrey S. Mendelson spake thus:

> GregS wrote:
>
>> 95% is a very good figure. I actually use the NON-denatured stuff.
>
> How about the drinking stuff? (95% "grain" alcohol).
>
> Here I can by a "fifth" (750ml) for less than 250ml of 70% Isopropyl.

Well, that's ethanol, which should also work fine, so long as you don't
mind the 5% water.

--
The fashion in killing has an insouciant, flirty style this spring,
with the flaunting of well-defined muscle, wrapped in flags.

- Comment from an article on Antiwar.com (http://antiwar.com)

== 5 of 12 ==
Date: Mon, Jul 26 2010 12:04 pm
From: zekfrivo@zekfrivolous.com (GregS)

In article <slrni4rlsb.9v8.gsm@cable.mendelson.com>, gsm@mendelson.com wrote:
>GregS wrote:
>
>> 95% is a very good figure. I actually use the NON-denatured stuff.
>
>How about the drinking stuff? (95% "grain" alcohol).
>
>Here I can by a "fifth" (750ml) for less than 250ml of 70% Isopropyl.
>

Yes I was reffering to the ethanol drinkable stuff that is not taxed.
Been used for years in medical parties.

greg

== 6 of 12 ==
Date: Mon, Jul 26 2010 12:14 pm
From: "Geoffrey S. Mendelson"

GregS wrote:
> Yes I was reffering to the ethanol drinkable stuff that is not taxed.
> Been used for years in medical parties.

For some strange reason, the cheapest booze you can buy in Israel is the
95% it costs about 25 NIS a fifth, around $6 INCLUDING TAXES.

Geoff.

--
Geoffrey S. Mendelson N3OWJ/4X1GM
To help restaurants, as part of the "stimulus package", everyone must order
dessert. As part of the socialized health plan, you are forbidden to eat it. :-)

== 7 of 12 ==
Date: Mon, Jul 26 2010 12:31 pm
From: "pimpom"

David Nebenzahl wrote:
> On 7/26/2010 11:49 AM Geoffrey S. Mendelson spake thus:
>
>> GregS wrote:
>>
>>> 95% is a very good figure. I actually use the NON-denatured
>>> stuff.
>>
>> How about the drinking stuff? (95% "grain" alcohol).
>>
>> Here I can by a "fifth" (750ml) for less than 250ml of 70%
>> Isopropyl.
>
> Well, that's ethanol, which should also work fine, so long as
> you
> don't mind the 5% water.

I use medical or denatured alcohol as a general-purpose cleaning
solution. When I need stronger stuff, such as on cruds of old and
hardened flux or when there's simply lots of it, I use automobile
paint thinner. Wiping with a piece of cloth or cotton wool is
usually enough and I rarely need to scrub with a brush.

The thinner can dissolve some plastics though. So some care is
needed, as is good ventilation. It looks and feels somewhat oily
but dries very quickly. A one-liter can costs about $3 US here.

== 8 of 12 ==
Date: Mon, Jul 26 2010 12:53 pm
From: zekfrivo@zekfrivolous.com (GregS)

In article <i2knq7$6ls$1@news.albasani.net>, "pimpom" <pimpom@invalid.invalid> wrote:
>David Nebenzahl wrote:
>> On 7/26/2010 11:49 AM Geoffrey S. Mendelson spake thus:
>>
>>> GregS wrote:
>>>
>>>> 95% is a very good figure. I actually use the NON-denatured
>>>> stuff.
>>>
>>> How about the drinking stuff? (95% "grain" alcohol).
>>>
>>> Here I can by a "fifth" (750ml) for less than 250ml of 70%
>>> Isopropyl.
>>
>> Well, that's ethanol, which should also work fine, so long as
>> you
>> don't mind the 5% water.
>
>I use medical or denatured alcohol as a general-purpose cleaning
>solution. When I need stronger stuff, such as on cruds of old and
>hardened flux or when there's simply lots of it, I use automobile
>paint thinner. Wiping with a piece of cloth or cotton wool is
>usually enough and I rarely need to scrub with a brush.
>
>The thinner can dissolve some plastics though. So some care is
>needed, as is good ventilation. It looks and feels somewhat oily
>but dries very quickly. A one-liter can costs about $3 US here.
>

I got some spray heavy duty flux remover with freon like component,
methelyne chloride, ethanol, and another component.
Its useless for regular cleaning. It dries too fast. I never had the
need to use other than alcohol for flux remover. When I
worked in a factory "DEC" in 1969, they had like washtubs with
spigots, and turn on the spigot out poured "TRI",
trichloroethane. It worked well. I still have a can around saying safety solvent.
Sometimes we would try to fix their modules, for some forgotten reason,
to fix a computer problem.

I also remember fellow in our section, working on something new, computer
"terminal monitors". There was some kind of problem, and he was taking some
boards into the mens room to wash them off. i guess they worked after that.That
was an interesting section with monitors, modems, and UARTS, and the PDP 8i
About 7 people.

I remember they used to sell cans about the size of paint sprays filled
with trichloroethane , sold as fire extinguishers.

greg

== 9 of 12 ==
Date: Mon, Jul 26 2010 3:01 pm
From: "krw@att.bizzzzzzzzzzzz"

On Mon, 26 Jul 2010 19:04:22 GMT, zekfrivo@zekfrivolous.com (GregS) wrote:

>In article <slrni4rlsb.9v8.gsm@cable.mendelson.com>, gsm@mendelson.com wrote:
>>GregS wrote:
>>
>>> 95% is a very good figure. I actually use the NON-denatured stuff.
>>
>>How about the drinking stuff? (95% "grain" alcohol).
>>
>>Here I can by a "fifth" (750ml) for less than 250ml of 70% Isopropyl.
>>
>
>
>Yes I was reffering to the ethanol drinkable stuff that is not taxed.
>Been used for years in medical parties.

Not a wise move. The un-taxed stuff (not for human consumption) often
contains benzene.

== 10 of 12 ==
Date: Mon, Jul 26 2010 4:46 pm
From: "Arfa Daily"

"pimpom" <pimpom@invalid.invalid> wrote in message
news:i2knq7$6ls$1@news.albasani.net...
> David Nebenzahl wrote:
>> On 7/26/2010 11:49 AM Geoffrey S. Mendelson spake thus:
>>
>>> GregS wrote:
>>>
>>>> 95% is a very good figure. I actually use the NON-denatured stuff.
>>>
>>> How about the drinking stuff? (95% "grain" alcohol).
>>>
>>> Here I can by a "fifth" (750ml) for less than 250ml of 70% Isopropyl.
>>
>> Well, that's ethanol, which should also work fine, so long as you
>> don't mind the 5% water.
>
> I use medical or denatured alcohol as a general-purpose cleaning solution.
> When I need stronger stuff, such as on cruds of old and hardened flux or
> when there's simply lots of it, I use automobile paint thinner. Wiping
> with a piece of cloth or cotton wool is usually enough and I rarely need
> to scrub with a brush.
>
> The thinner can dissolve some plastics though. So some care is needed, as
> is good ventilation. It looks and feels somewhat oily but dries very
> quickly. A one-liter can costs about $3 US here.
>

Hope you never use it on a board that's got a lacquer type coating on it
then ... :-\

What amazes me, and I can't understand, is why all of these 'substitute'
chemicals are used by people, when the proper ones, designed for the job,
are really not expensive in the first place

Arfa

== 11 of 12 ==
Date: Mon, Jul 26 2010 5:52 pm
From: Sergey Kubushyn

In sci.electronics.repair Arfa Daily <arfa.daily@ntlworld.com> wrote:
>
>
> "pimpom" <pimpom@invalid.invalid> wrote in message
> news:i2knq7$6ls$1@news.albasani.net...
>> David Nebenzahl wrote:
>>> On 7/26/2010 11:49 AM Geoffrey S. Mendelson spake thus:
>>>
>>>> GregS wrote:
>>>>
>>>>> 95% is a very good figure. I actually use the NON-denatured stuff.
>>>>
>>>> How about the drinking stuff? (95% "grain" alcohol).
>>>>
>>>> Here I can by a "fifth" (750ml) for less than 250ml of 70% Isopropyl.
>>>
>>> Well, that's ethanol, which should also work fine, so long as you
>>> don't mind the 5% water.
>>
>> I use medical or denatured alcohol as a general-purpose cleaning solution.
>> When I need stronger stuff, such as on cruds of old and hardened flux or
>> when there's simply lots of it, I use automobile paint thinner. Wiping
>> with a piece of cloth or cotton wool is usually enough and I rarely need
>> to scrub with a brush.
>>
>> The thinner can dissolve some plastics though. So some care is needed, as
>> is good ventilation. It looks and feels somewhat oily but dries very
>> quickly. A one-liter can costs about $3 US here.
>>
>
> Hope you never use it on a board that's got a lacquer type coating on it
> then ... :-\
>
> What amazes me, and I can't understand, is why all of these 'substitute'
> chemicals are used by people, when the proper ones, designed for the job,
> are really not expensive in the first place

Another question is why do they try to clean rosin with pure alcohol that is
extremely ineffective for that purpose?

The ad-hoc solution that is cheap and works really well is a mix of 60%
denaturated alcohol with 40% Xylene from a hardware store. Pure alcohol is a
very bad solvent for rosin flux, very slow and leaving a lot of white
residue.

And it only makes sense to invent something homebrew if very good flux
remover in aerosol cans is really unavailable. Otherwise just go grab a can
at your local Fry's (or whatever) and enjoy.

---
******************************************************************
* KSI@home KOI8 Net < > The impossible we do immediately. *
* Las Vegas NV, USA < > Miracles require 24-hour notice. *
******************************************************************

== 12 of 12 ==
Date: Mon, Jul 26 2010 10:30 pm
From: "Jon Danniken"

David Nebenzahl wrote:
>
> Why mess around with isopropyl alcohol at all, since all of it
> contains *some* water? Use denatured alcohol (methanol) instead, in a
> tightly-capped container to guard against absorbing moisture.

Perhaps it is different where you live, but here in the US, denatured
alcohol is not methanol; it is, instead, ethanol with a denaturant added.
The denaturant can be methanol, or it can be any number of other chemicals,
so long as it is sufficiently adulterated to prevent a person from using it
for ingestion.

Jon

==============================================================================
TOPIC: Fender Concert amp
http://groups.google.com/group/sci.electronics.repair/t/618084923bc57a44?hl=en
==============================================================================

== 1 of 1 ==
Date: Mon, Jul 26 2010 11:36 am
From: Ron

On 26/07/2010 17:54, Arfa Daily wrote:
>
>
> "Ron" <ron@lunevalleyaudio.com> wrote in message
> news:uoydnVAX4qqSKNDRnZ2dnUVZ7sWdnZ2d@bt.com...
>> On 26/07/2010 16:39, N_Cook wrote:
>>> Bad splitter-driver plate/anode 100K resistor, what goes bad with them?
>>> Causing rustle noise in output. Partial crack? or something chemical.
>>> I may
>>> as well replace the 82K while I'm at it , but is there any point to
>>> pre-emptively replacing all the HV droppers ?
>>> Anyone happen to know the datecode structure for Mallory
>>> electrolytics of
>>> the 1980s?
>>> say 4uF, 450VDC
>>> marked
>>> 012022
>>> 235
>>> 8346B
>>>
>>> 1982 and 35/52 from 235 or 1983 and 46/52 from the last number?
>>>
>>>
>>
>> Noisy 100k resistors is a common and well known problem with Fender
>> amps, change em all.
>>
>> Ron
>>
>
>
> I reckon that goes for all amps with 12AX7 stages, doesn't it Ron ?
>
> Arfa

Not sure, I know I`ve changed a lot in Fenders. on the newer models it's
such a lot of parping about getting the board out, it`s easiest to
change the lot.
Modern valve amps are so very noisy anyway, specially fenders - the
don't make em like they used to you know!

Ron

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==============================================================================
TOPIC: Midiverb ii issues?
http://groups.google.com/group/sci.electronics.repair/t/aaedd7aef36420d1?hl=en
==============================================================================

== 1 of 3 ==
Date: Mon, Jul 26 2010 12:10 pm
From: "Gareth Magennis"

"Arfa Daily" <arfa.daily@ntlworld.com> wrote in message
news:7N43o.336958$m87.69552@hurricane...
>
>
> "Gareth Magennis" <sound.service@btconnect.com> wrote in message
> news:y1%2o.220782$U%7.143992@hurricane...
>>
>>
>> "Arfa Daily" <arfa.daily@ntlworld.com> wrote in message
>> news:Efj2o.333105$NW.10213@hurricane...
>>>
>>>
>>> "El Grillo" <nradina@gmail.com> wrote in message
>>> news:0b3f8d3e-ce83-4a8d-a032-59a743522db2@k19g2000yqc.googlegroups.com...
>>>> Hello,
>>>>
>>>> I'm an new electronic technician TRYING to grasp a hold of my
>>>> troubleshooting skills.
>>>> I have two Midiverb 2's on my bench currently.
>>>>
>>>> One I was able to repair by replaceing some bad Filter caps, but the
>>>> other is still giving me all the indicator diodes are lit and the 2
>>>> digit screen is dead.
>>>>
>>>> I tested all caps with an ESR meter and all is good.
>>>> Noticed one small decoupling cap looked funky and replaced, but no
>>>> luck.
>>>> (I'm also a bit unsure if I replaced with the right cap. I had a few
>>>> 104 film caps in the shop).
>>>>
>>>> SO...I'm asking for a bit of help from you all, if willing.
>>>>
>>>> Any idea where I should be looking?
>>>>
>>>> Thanks in advice for any help you can send my way.
>>>>
>>>> nicholas
>>>
>>> Supply rails all correct voltages and clean (check with digital
>>> voltmeter and 'scope) ? Processor chip receiving correct reset ?
>>> Processor clock running ? No user control jammed in 'operating' position
>>> ? Such things can cause a processor to 'loop forever' if it executes a
>>> bit of code during boot up, to check for button presses that are part of
>>> a diagnostic entry sequence, and the button that's being 'pressed' is
>>> not one that is being expected.
>>>
>>> Arfa
>>
>>
>> You might pay particular attention to Arfa's suggestion of the uP
>> receiving the correct reset.
>>
>> The first thing I used to do with these old style microprocessor things,
>> after checking the power supplies, was to force a warm boot by taking the
>> reset line low or high - whatever is appropriate to force a reset. (get
>> the datasheet for the processor to find what is required and where) It
>> was surprising how many then suddenly burst into life.
>>
>>
>>
>> Gareth.
>
> Yes, good advice. A forced reset is a good test. However, the OP's
> experience of dealing with this sort of problem appears limited, so if I
> were he, I think I would definitely be looking for some schematics, as
> without them, it's going to be difficult for him to troubleshoot this ...
>
> Arfa

If you get the datasheets for the uP and ROM/RAM chips, you can scope each
data and address line and sometimes come across one that just doesn't look
right, e.g. it has values that are not 0 or 5 volts, but something in
between. Forcing a reset can sometimes help by providing a few cycles of
program to watch before the unit hangs.

Cut bus tracks til you find out which chip is fouling the line.

I have managed to fix quite a few units this way where the schematics were
not available.

(By the way, I'd always change the program RAM chip first if feasible, as
these used to be the most likely chip to fail)

Gareth.

== 2 of 3 ==
Date: Mon, Jul 26 2010 1:35 pm
From: El Grillo

Thank you everyone for your help!

I will try to work out some of the issues tomorrow at the shop.

Also, if a filter cap tests good using a ESR meter, could it still be
bad??

On Jul 26, 3:10 pm, "Gareth Magennis" <sound.serv...@btconnect.com>
wrote:
> "Arfa Daily" <arfa.da...@ntlworld.com> wrote in message
>
> news:7N43o.336958$m87.69552@hurricane...
>
>
>
>
>
>
>
> > "Gareth Magennis" <sound.serv...@btconnect.com> wrote in message
> >news:y1%2o.220782$U%7.143992@hurricane...
>
> >> "Arfa Daily" <arfa.da...@ntlworld.com> wrote in message
> >>news:Efj2o.333105$NW.10213@hurricane...
>
> >>> "El Grillo" <nrad...@gmail.com> wrote in message
> >>>news:0b3f8d3e-ce83-4a8d-a032-59a743522db2@k19g2000yqc.googlegroups.com...
> >>>> Hello,
>
> >>>> I'm an new electronic technician TRYING to grasp a hold of my
> >>>> troubleshooting skills.
> >>>> I have twoMidiverb2's on my bench currently.
>
> >>>> One I was able to repair by replaceing some bad Filter caps, but the
> >>>> other is still giving me all the indicator diodes are lit and the 2
> >>>> digit screen is dead.
>
> >>>> I tested all caps with an ESR meter and all is good.
> >>>> Noticed one small decoupling cap looked funky and replaced, but no
> >>>> luck.
> >>>> (I'm also a bit unsure if I replaced with the right cap. I had a few
> >>>> 104 film caps in the shop).
>
> >>>> SO...I'm asking for a bit of help from you all, if willing.
>
> >>>> Any idea where I should be looking?
>
> >>>> Thanks in advice for any help you can send my way.
>
> >>>> nicholas
>
> >>> Supply rails all correct voltages and clean (check with digital
> >>> voltmeter and 'scope) ? Processor chip receiving correct reset ?
> >>> Processor clock running ? No user control jammed in 'operating' position
> >>> ? Such things can cause a processor to 'loop forever' if it executes a
> >>> bit of code during boot up, to check for button presses that are part of
> >>> a diagnostic entry sequence, and the button that's being 'pressed' is
> >>> not one that is being expected.
>
> >>> Arfa
>
> >> You might pay particular attention to Arfa's suggestion of the uP
> >> receiving the correct reset.
>
> >> The first thing I used to do with these old style microprocessor things,
> >> after checking the power supplies, was to force a warm boot by taking the
> >> reset line low or high - whatever is appropriate to force a reset. (get
> >> the datasheet for the processor to find what is required and where) It
> >> was surprising how many then suddenly burst into life.
>
> >> Gareth.
>
> > Yes, good advice. A forced reset is a good test. However, the OP's
> > experience of dealing with this sort of problem appears limited, so if I
> > were he, I think I would definitely be looking for some schematics, as
> > without them, it's going to be difficult for him to troubleshoot this ...
>
> > Arfa
>
> If you get the datasheets for the uP and ROM/RAM chips, you can scope each
> data and address line and sometimes come across one that just doesn't look
> right, e.g. it has values that are not 0 or 5 volts, but something in
> between. Forcing a reset can sometimes help by providing a few cycles of
> program to watch before the unit hangs.
>
> Cut bus tracks til you find out which chip is fouling the line.
>
> I have managed to fix quite a few units this way where the schematics were
> not available.
>
> (By the way, I'd always change the program RAM chip first if feasible, as
> these used to be the most likely chip to fail)
>
> Gareth.

== 3 of 3 ==
Date: Mon, Jul 26 2010 1:51 pm
From: "tm"

"El Grillo" <nradina@gmail.com> wrote in message
news:605a276d-e7c1-42c6-90dd-f65c680acc0b@i21g2000yql.googlegroups.com...
.Thank you everyone for your help!
.
.I will try to work out some of the issues tomorrow at the shop.
.
.Also, if a filter cap tests good using a ESR meter, could it still be
.bad??
.
.n

A shorted cap will check good with an ESR meter. You should do a sanity
check on what it is telling you.

--- news://freenews.netfront.net/ - complaints: news@netfront.net ---

==============================================================================
TOPIC: Using the proper technical terms ... :-)
http://groups.google.com/group/sci.electronics.repair/t/70f4a28084d10b2c?hl=en
==============================================================================

== 1 of 2 ==
Date: Mon, Jul 26 2010 12:38 pm
From: Ron

On 26/07/2010 18:11, Arfa Daily wrote:
> Just in. A combo, the job ticket on which says "Low volume. Sounds like
> shit."
>
> There's hope for the lads behind the counter, yet. How nice to get one
> with a perfect owner's description of the problem, rather than some wild
> guess that the person who's booked it in has made, based on what the
> owner said. I can just see some hairy guitarist lugging it in and saying
> to whoever booked it in "Go on lad ! Just write it down, Low volume.
> Sounds like shit !"
>
> :-)
>
> Arfa

So technically, it's probably fooked

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== 2 of 2 ==
Date: Mon, Jul 26 2010 3:01 pm
From: "Trevor Wilson"

"Arfa Daily" <arfa.daily@ntlworld.com> wrote in message
news:blj3o.55085$0e3.52289@hurricane...
> Just in. A combo, the job ticket on which says "Low volume. Sounds like
> shit."
>
> There's hope for the lads behind the counter, yet. How nice to get one
> with a perfect owner's description of the problem, rather than some wild
> guess that the person who's booked it in has made, based on what the owner
> said. I can just see some hairy guitarist lugging it in and saying to
> whoever booked it in "Go on lad ! Just write it down, Low volume. Sounds
> like shit !"
>
> :-)

**I like it! Much better than when the customer thinks they can diagnose the
fault for you.

--
Trevor Wilson
www.rageaudio.com.au

==============================================================================
TOPIC: Question for the Brits here, what do you call a Belling-Lee connector?
http://groups.google.com/group/sci.electronics.repair/t/b63d999facac6197?hl=en
==============================================================================

== 1 of 2 ==
Date: Mon, Jul 26 2010 5:01 pm
From: Mike Tomlinson

In article <slrni4ov9q.8oe.gsm@cable.mendelson.com>, Geoffrey S.
Mendelson <gsm@mendelson.com> writes

>What do you call a Belling-Lee connector?

usually "coax plug" or "TV aerial plug".

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

== 2 of 2 ==
Date: Mon, Jul 26 2010 5:04 pm
From: Mike Tomlinson

In article <513c911625dave@davenoise.co.uk>, Dave Plowman (News)
<dave@davenoise.co.uk> writes

>Older ones will call them a Belling-Lee, strangely enough. But they are
>pretty universal in the UK for all terrestrial TV and FM radio aerials,
>and have been since the outset. Way before PAL was thought of.

Also used in Spain, if that's of interest.

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

==============================================================================
TOPIC: Paralleled Amplifier Wiring
http://groups.google.com/group/sci.electronics.repair/t/d586ede5490acff1?hl=en
==============================================================================

== 1 of 1 ==
Date: Mon, Jul 26 2010 6:09 pm
From: "Michael A. Terrell"

Phil Allison wrote:
>
> ** Wot a pathetic moron....

...and you'll never change.

--
Anyone wanting to run for any political office in the US should have to
have a DD214, and a honorable discharge.

==============================================================================
TOPIC: SMPS capacitor test question
http://groups.google.com/group/sci.electronics.repair/t/47a9ad25e4f5e03c?hl=en
==============================================================================

== 1 of 1 ==
Date: Mon, Jul 26 2010 6:51 pm
From: who where

On Mon, 26 Jul 2010 16:00:06 +0000 (UTC), Cydrome Leader
<presence@MUNGEpanix.com> wrote:

>I noticed the lithium battery for my nikon camera was acting as it it had
>a bad cell. It would charge, but just not last very long. The battery is
>"smart" with a third terminal that the camera talks to. It shows perfect
>"health" which is total nonsense after 2 years of use and the fact that it
>doesn't work right.
>
>THe charger itself is is little less smart. It charges the battery at 8.4V
>and 0.9A or something like that, but using only the + and - terminals
>from the battery pack.
>
>I also noticed it got pretty hot, so I opened it and found very few parts
>aside from some 20+ pin charging controller and pretty basic switching
>power supply. The transformer and filter caps were pretty hot. The older
>Kodak/Sony AA NiMH chargers seriously look more complex than this charger.
>
>I guess it's expected that that cap will warm up at whatever crazy
>frequencies they use these days in compact power supplies, however while
>it would fail my standard for the touch test, it may still be in spec.
>
>Is a capacitor ESR meter of some sort going to be useful for testing the
>cap? What frequencies do they test at?
>
>While I could just replace the cap and not worry about it, not being able
>to test it is the issue I'm more interested in solving.

What Arfa said, but an ESR meter is a bit of a luxury if you don't
have the prospect of some ongoing use for it (I have one, but I use it
in servicing often enough). For one-off problems and no meter at
hand, if I had doubts about the cap I'd simply replace it with a 105C
low-ESR reputable_brand_and_series one. They are cheap enough, and if
that still leaves the thing steaming hot then the problem lies
elsewhere.

On the battery pack - there *should* be a protection module within it
which will (should) monitor cell voltage differences among other
parameters. Assuming that is the case, a LiXX charger with a constant
voltage setting of 8.4V is appropriate, and 900mA is within the bounds
of reason. If the charger gets hot it is probably due to its
supply-side electronics rather than the controller chip or battery
side circuitry. An 8W switcher shouldn't dissipate much heat at all.
While I would normally expect good stuff from Nikon, who knows.

==============================================================================
TOPIC: Sony Wega KD-36XS955
http://groups.google.com/group/sci.electronics.repair/t/d41634951796c588?hl=en
==============================================================================

== 1 of 1 ==
Date: Mon, Jul 26 2010 7:03 pm
From: swaldorf_at_hf2theatre_dot_com@foo.com (Videoguy)

Videoguy had written this in response to
http://www.electrondepot.com/repair/Sony-Wega-KD-36XS955-33662-.htm :

MR.PEANUT wrote:

-------------------------------------
VIDEOGUY

Hey Mr.Peanut,
Hope all is well. I am having the identical problem. Any luck on the IC
solution?

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==============================================================================
TOPIC: designer Christian Louboutin
http://groups.google.com/group/sci.electronics.repair/t/e88f63f33855a8ca?hl=en
==============================================================================

== 1 of 1 ==
Date: Mon, Jul 26 2010 9:02 pm
From: "www.guomeitrade.com"

designer Christian Louboutin

Barbie's new cobbler is the revered shoe designer ,[url=http://
www.vipchristianLouboutin.com]Christian Louboutin[/url]. Mattel,
Barbie's manufacturer, has partnered with Christian Louboutin for a
multifaceted program under which the French designer will serve as a
yearlong godfather to Barbie."Ryan Harris underwent arthroscopic
surgery in Melbourne on Thursday to correct cartilage damage to his
right knee," Cricket Australia doctor Trefor James said.According to
WWD, the collaboration includes the Barbie-pink, red-soled Louboutin
shoes that premiered in Barbies birthday runway show during New York
Fashion Week in February, a Barbie doll and accessories collection
customized by the designer and a diary filled with imaes of Louboutin
and Barbie as they explore the cobblers favorite things.Barbie has a
long history of working with various designers and artists who use
Barbie as a muse, said Stephanie Cota, senior vice president of
marketing of Barbie brands at Mattel. It was a natural for Barbie, not
only with her fashion heritage, but also because of her passion for
shoes.His progress will be monitored in the coming weeks to determine
his availability for selection for the VB Tour of India tour in
October.She has a billion shoes and we needed to do something special
for her shoe collection.

Christian Louboutin knew there were cerain changes he wanted to make
to his three customized dolls, which are inspired by Nefertiti and
Marilyn Monroe. She needed great shoes, a thinner ankle and, to me, as
Im obsessed with feet, a foot more curved, the designer said.The three
dolls, packaged in Louboutin shoe boxes, each come with four pairs of
Barbie-size Louboutin heels.Harris' injury continues a run of woes for
Australia's pacemen, with Peter Siddle and Brett Lee both sidelined
for long periods, while Ben Hilfenhaus made his return after seven
months out with a knee problem in the recently-completed tour match
against Derbyshire.In December, Mattel will unveil Louboutins jewel
thief-themed Barbie; in February, it will add a safari-themed Barbie,
and for May, Louboutin designed a Barbie that goes to the Cannes Film
Festival. The GBP100 dolls will be sold at Net-a-porter.com, which is
Mattels exclusive partner for this project and will be selling dolls
for the first time. In September, the site will offer a Christian
Louboutin Barbie shoe collection of 12 pairs.

According to the upmarket London deparment store Harvey Nichols, most
of us would give up toilet paper for the sake of a designer handbag.
At least, that is what it will advertise in a new campaign in which it
celebrates a number of its best offerings as worthy of any
sacrifice.Set a target of 219, Mohammad Shahzad and Asghar Stanikzai
hit half-centuries as the Afghans got home with a full four overs to
spare at Hazelaarweg, Rotterdam.The campaign is presented as a
calender.March is the month in which you may eat baked beans every day
in order to be able to afford a pair of gorgeous Christian
Louboutins.April will see you giving up toilet paper to be able to buy
a Luella bag and May will have you sitting at home every night to save
up for a Martin Margiela jacket.The hosts had earlier been grateful to
a knock of 96 from Tom Cooper as they struggled to 218-5 from their 50
overs after opting to bat first.Says Julia Bowen, marketing director
of Harvey Nichols: "The campaign taps into a real insight of the
priorities of the young fashion lover of today who will do anything to
get the latest must-have item." Perhaps, but at the expense of
personal hygiene? I don't think so!

[url=http://www.vipchristianLouboutin.com]Christian Louboutin[/url] On
July 18th, Paris will see the launch of the new Louboutin boutique on
Rue du Faubourg Saint-Honore. It will be Christian Louboutin, who's
famed for his red soled shoes, third Parisian boutique.The 22-year-old
has made an instant impact on the international stage since his debut
in February, impressing with his aggressive batting and being a
crucial part of England's ICC World Twenty20 success.The opening will
carry the festive theme la fete foraine or fun fair. The 100 square
meter space features a mezzanine and a VIP space with furniture by
designer Elizabeth Garouste.Kieswetter scored a century in only his
third ODI contest and again looked controlled when sharing an opening
stand of 75 with Andrew Strauss in the first of the three-match series
against the Tigers.She is pursuing her collaboration with Christian
Louboutin after having worked with him on the decor of the flagship
boutique of Rue Jean-Jacques Rousseau.

==============================================================================
TOPIC: multisongs downloadings
http://groups.google.com/group/sci.electronics.repair/t/9e3d973b1c202091?hl=en
==============================================================================

== 1 of 1 ==
Date: Mon, Jul 26 2010 10:36 pm
From: gayathri m

multisongs downloadings
http://www.123maza.com/dora/vvvvv

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