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

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

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Today's topics:

==============================================================================
TOPIC: Underwater Strobe Schematics (Sea & Sea YS-27DX)
http://groups.google.com/group/sci.electronics.repair/t/1b70462f9a3c462d?hl=en
==============================================================================

== 1 of 4 ==
Date: Mon, Apr 4 2011 12:14 am
From: "N_Cook"

Chairman WAPSAC <chairman.wpsac@gmail.com> wrote in message
news:871a7c6b-b597-48bb-833e-445b6149e4c6@glegroupsg2000goo.googlegroups.com
...
> I'm hoping someone can help here.
>
> I have a dead Sea & Sea YS-27DX strobe. The strobe flooded and
subsequently let out all the smoke making the circuit work!. I appreciate
that the damage may in fact be catastrophic but I'll have a go at fixing it
anyway!
>
> The problem is I don't have any schematics. Sea & Sea won't respond to my
requests for schematics (no surprise there then). So I'm wondering if anyone
has a schematic for this unit?
>
> Thanks,
>
> Ian

Don't know about flooding aspect. But inspect the bakelite of the socket
between the pins of the lamp, can break down from heat and volts and
generate smoke.

== 2 of 4 ==
Date: Mon, Apr 4 2011 11:13 am
From: Chairman WAPSAC

OK thanks for the replies so far. Main reason for wanting schematics is that the board has a number of surface mount components and I can't see values on them.

Flooding was with salt water I believe.

Will be taking the strobe into work to place in ultrasonic bath but general condition inside is good with only a couple of areas where ingress is evident.

Have tried the transformer and switches and have buzzed out the battery lines. All looks fine so far. The LED which lights to indicate that the caps are charged and the unit is ready does not operate when batteries are installed and the unit is switched on. I've tested the LED and it's working fine and I've also used a camera flash and torch to try and trigger it which has no effect so I'm pretty sure the problem lies in the circuitry prior to the caps rather than in the triggering.

Cheers

== 3 of 4 ==
Date: Mon, Apr 4 2011 12:02 pm
From: "William Sommerwerck"

> The LED which lights to indicate that the caps are charged
> and the unit is ready does not operate when batteries are
> installed and the unit is switched on.

Handy tip... Do you hear the oscillator whining? Modern flashes are on the
quiet side, but you should be able to hear the transformer (or even the
transistors!) "singing" when you bend over.

If the charge circuitry is working, you should a couple hundred volts across
the caps.

== 4 of 4 ==
Date: Mon, Apr 4 2011 12:39 pm
From: Chairman WAPSAC

Yeah...have listened.....nothing.....checked the voltage across the caps....nothing.....maybe current limiting resistor in the circuit that's blown but the circuit isn't easy to trace and no idea what the components on the board are supposed to be as many of them don't appear to have markings other than whats on the board such as C3 D7 U2 etc. One suspect chip is a monostable multivibrator which should be easy to find but the SCRs are impossible to identify as are most the diodes, resistors and caps. Only double sided board so not the nightmare of multilayer but still it's two small boards and it's fiddly tracing it through.

==============================================================================
TOPIC: AVO 8 Mk 4 ...
http://groups.google.com/group/sci.electronics.repair/t/a0ca6d125e6a7e97?hl=en
==============================================================================

== 1 of 2 ==
Date: Mon, Apr 4 2011 3:06 am
From: JW

On Sun, 3 Apr 2011 05:27:44 GMT spam-no-spam@Onetel.net.uk.invalid
(Windmill) wrote in Message id: <LJ29u8.5vD@freebie.onetel.net.uk>:

>Mike Tomlinson <mike@jasper.org.uk> writes:
>
>>In article <5Rqlp.4508$o81.2161@newsfe28.ams2>, Arfa Daily
>><arfa.daily@ntlworld.com> writes
>>> Even more annoying is that I have damaged the
>>>meter by my own stupidity
>>Measured the resistance of the mains?
>
>You too, eh?
>But they are indeed tough beasts; apart from a shaky ohms-adjust pot
>it's still working 25 years later.
>
>Doubtful if you could do that with a modern DVM and get away with it.

Not a cheap one maybe. My bench meter is a Keithley 2000 that will take
1KV peak when in resistance mode. Not that I'd do it on purpose, though...
:)

== 2 of 2 ==
Date: Mon, Apr 4 2011 5:35 am
From: "Mark Zacharias"

"JW" <none@dev.null> wrote in message
news:mr5jp61anu3bt8n1dt0dq7cs9fqc9670lb@4ax.com...
> On Sun, 3 Apr 2011 05:27:44 GMT spam-no-spam@Onetel.net.uk.invalid
> (Windmill) wrote in Message id: <LJ29u8.5vD@freebie.onetel.net.uk>:
>
>>Mike Tomlinson <mike@jasper.org.uk> writes:
>>
>>>In article <5Rqlp.4508$o81.2161@newsfe28.ams2>, Arfa Daily
>>><arfa.daily@ntlworld.com> writes
>>>> Even more annoying is that I have damaged the
>>>>meter by my own stupidity
>>>Measured the resistance of the mains?
>>
>>You too, eh?
>>But they are indeed tough beasts; apart from a shaky ohms-adjust pot
>>it's still working 25 years later.
>>
>>Doubtful if you could do that with a modern DVM and get away with it.
>
> Not a cheap one maybe. My bench meter is a Keithley 2000 that will take
> 1KV peak when in resistance mode. Not that I'd do it on purpose, though...
> :)

A Fluke 80 series III or later can survive this - not sure about the
original 80 series.
I wouldn't do it intentionally just to prove a point, though...

Mark Z.

==============================================================================
TOPIC: What causes this kind of failure in a CRT monitor?
http://groups.google.com/group/sci.electronics.repair/t/42b09cf82a8a222c?hl=en
==============================================================================

== 1 of 2 ==
Date: Mon, Apr 4 2011 3:46 am
From: nontelo@dico.no (Slater)

It's doing that thing again. DAMN!!!!

== 2 of 2 ==
Date: Mon, Apr 4 2011 8:58 am
From: John Robertson

Slater wrote:
> Jamie <jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net> wrote:
>
>> That looks like HV leaking somewhere. You may also have some
>> cracked insulation in the Anode lead or flyback coil. You could
>> even have a cracked solder joint or moisture in it.
>
> Thank you very much for your advice. It's not doing that anymore. It
> looks like some oxide or dirt is present in the vertical size
> regulation knob, although I'm not 100% sure.

If the flicker problem changes when you turn the vertical hold or
linearity controls that would indicate a pot problem.

Have you tried control cleaner such as MG's Tuner Lube? About the only
way to restore potentiometers...

Otherwise it could possibly be HV leakage - take the rear cover off and
turn it on in a dark room to see if there is any arcing. You would
likely hear some sizzling noise too and smell ozone if there is a HV leak.

John :-#)#

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

==============================================================================
TOPIC: How-To: Common Cause Of Flat Panel PS Failure
http://groups.google.com/group/sci.electronics.repair/t/ff5b6703ec041dcc?hl=en
==============================================================================

== 1 of 1 ==
Date: Mon, Apr 4 2011 3:47 am
From: Bob Villa

On Apr 1, 6:51 pm, "Michael A. Terrell" <mike.terr...@earthlink.net>
wrote:
> Bob Villa wrote:
>
> > On Mar 31, 6:20 pm, "Michael A. Terrell" <mike.terr...@earthlink.net>
> > wrote:
>
> > > > Hey Mike when can I expect this PSU to fail...a few years from now?
> > > > Thanks for your gracious responses.
>
> > > When can you post a real question?
>
> > Alas, the mastertech doesn't understand sarcasm.
>
> You can't even do sarcasm well, and I'm not being sarcastic.
>
> --
> You can't fix stupid. You can't even put a Band-Aid on it, because it's
> Teflon coated.

The only thing you do well...other than being a critic...is please
yourself.

==============================================================================
TOPIC: Foregoing warranty rights
http://groups.google.com/group/sci.electronics.repair/t/db33289fb500ca5c?hl=en
==============================================================================

== 1 of 5 ==
Date: Mon, Apr 4 2011 9:19 am
From: Smitty Two

In article <4d98f181$0$7325$822641b3@news.adtechcomputers.com>,
David Nebenzahl <nobody@but.us.chickens> wrote:

> So--and this is completely out of left field, I know--what would happen
> if a guy put a vacuum tube--say a biggish octal one, like a 5Y3 or a
> 6V6--into a microwave and nuked it?

Everything on planet Earth has been put into a microwave. Search YouTube
for "vacuum tube microwave" and you'll get several relevant hits.

== 2 of 5 ==
Date: Mon, Apr 4 2011 9:27 am
From: Meat Plow

On Sun, 03 Apr 2011 19:34:29 -0700, Jeff Liebermann wrote:

> On Sun, 03 Apr 2011 20:09:10 -0700, David Nebenzahl
> <nobody@but.us.chickens> wrote:
>
>>So where does that purplish glow come from? I've seen it.
>
> Impurities in the glass envelope or gas in the tube.
>
> If gas, take an anti-acid tablet and you should be fine in a few
> minutes.
>
> <http://www.vacuumtubes.net/How_Vacuum_Tubes_Work.htm> Scroll down to:
> C. Blue Glow -- what causes it?
> for more details.

So even after a getter flash there is still a certain amount of
impurities? I've never seen a 6L6 that didn't have some blue inside
when in operation. It looks as though the blue only occurs where the
electron beams hit the inside of the glass. At least in new tubes.

--
Live Fast Die Young, Leave A Pretty Corpse

== 3 of 5 ==
Date: Mon, Apr 4 2011 1:36 pm
From: whit3rd

On Sunday, April 3, 2011 4:15:48 PM UTC-7, David Nebenzahl wrote:
> On 4/3/2011 5:29 AM Geoffrey S. Mendelson spake thus:

> So--and this is completely out of left field, I know--what would happen
> if a guy put a vacuum tube--say a biggish octal one, like a 5Y3 or a
> 6V6--into a microwave and nuked it?

You mean, 'nuked it AGAIN', don't you? The usual manufacturing
of vacuum tubes is finished off with pumpdown, sealing, and then
running an induction coil to heat the little loop-thing
that evaporates a bit of metal (like sodium). It's called 'flashing',
and the silvery deposit ('getter') on the inside of the tube is intended to
be an oxygen scavenger for the long lifetime of the device.

In the case of photomultipliers, it is also done to create the photocathode
layer, often of some alloy that cannot be usefully blended until there's
a vacuum.

== 4 of 5 ==
Date: Mon, Apr 4 2011 2:08 pm
From: Meat Plow

On Mon, 04 Apr 2011 13:36:49 -0700, whit3rd wrote:

> On Sunday, April 3, 2011 4:15:48 PM UTC-7, David Nebenzahl wrote:
>> On 4/3/2011 5:29 AM Geoffrey S. Mendelson spake thus:
>
>> So--and this is completely out of left field, I know--what would happen
>> if a guy put a vacuum tube--say a biggish octal one, like a 5Y3 or a
>> 6V6--into a microwave and nuked it?
>
> You mean, 'nuked it AGAIN', don't you? The usual manufacturing of
> vacuum tubes is finished off with pumpdown, sealing, and then running an
> induction coil to heat the little loop-thing that evaporates a bit of
> metal (like sodium). It's called 'flashing', and the silvery deposit
> ('getter') on the inside of the tube is intended to be an oxygen
> scavenger for the long lifetime of the device.
>
> In the case of photomultipliers, it is also done to create the
> photocathode layer, often of some alloy that cannot be usefully blended
> until there's a vacuum.

They use getters in metallurgy to absorb impurities. The getter is
actually the "little loop-thing" and not the deposit that is a byproduct
of the flashing. Some getters are made of a special material and don't
need flashing. Don't ask me for a tube number. Tubes with graphite plates
don't need a getter as the graphite absorbs impurities.

--
Live Fast Die Young, Leave A Pretty Corpse

== 5 of 5 ==
Date: Mon, Apr 4 2011 3:14 pm
From: Jeff Liebermann

On Mon, 4 Apr 2011 16:27:32 +0000 (UTC), Meat Plow
<mhywattt@yahoo.com> wrote:

>On Sun, 03 Apr 2011 19:34:29 -0700, Jeff Liebermann wrote:
>
>> On Sun, 03 Apr 2011 20:09:10 -0700, David Nebenzahl
>> <nobody@but.us.chickens> wrote:
>>
>>>So where does that purplish glow come from? I've seen it.
>>
>> Impurities in the glass envelope or gas in the tube.
>>
>> If gas, take an anti-acid tablet and you should be fine in a few
>> minutes.
>>
>> <http://www.vacuumtubes.net/How_Vacuum_Tubes_Work.htm> Scroll down to:
>> C. Blue Glow -- what causes it?
>> for more details.

>So even after a getter flash there is still a certain amount of
>impurities? I've never seen a 6L6 that didn't have some blue inside
>when in operation. It looks as though the blue only occurs where the
>electron beams hit the inside of the glass. At least in new tubes.

Yep. As I vaguely recall (which means I didn't Google for a
reference) glass has the irritating habit of collecting impurities and
volatiles during manufacture. Irving Langmuir figured this out in the
1920's working on light bulbs. He would draw the best vacuum possible
and in a few days, find the bulb full of water vapor and other gasses.
The hot filament would break down the water into hydrogen and oxygen.
The oxygen would then oxidize the electrodes, and blacken the inside
of the bulb.

So, he invented a method of baking the glass to remove the volatiles
prior to evacuation and an acid bath to remove some of the impurities.
It also works nicely for vacuum tubes, but like all such processes, is
far from perfect. There's always some impurities left behind.

When we talk about a "gassy" vacuum tube, it's not a leaky glass
envelope or seal. The getter does best with reactive gases and does
nothing for eliminating noble gases, which will not react with metals
(or most anything else). It's those noble gases that remain (helium,
neon, argon, krypton, xenon, and radon) that you're seeing glow. Most
likely helium and argon mix. The small helium molecule will also
diffuse through the glass from the outside air. See photos at:
<http://en.wikipedia.org/wiki/Noble_gas#Discharge_color>

--
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

==============================================================================
TOPIC: DTV question [minor]
http://groups.google.com/group/sci.electronics.repair/t/d8b62bf63e76e1c5?hl=en
==============================================================================

== 1 of 6 ==
Date: Mon, Apr 4 2011 1:06 pm
From: "Ian Field"

"David Nebenzahl" <nobody@but.us.chickens> wrote in message
news:4d98eb6d$0$32442$822641b3@news.adtechcomputers.com...
> So one of my local TV stations seemingly stopped sending program
> information data--you know, the text that says what's on, what's going to
> be on, and explaining in more detail what's on. Landing on that channel,
> display simply showed "- No program information -". (BTW, this seems to be
> the default for all of the minor little public TV stations around here,
> not including the big PBS stations which are diligent about supplying this
> information.)
>
> OK, no big deal, but slightly annoying, so I fired off an email to the
> station, alerting them to this situation and asking them if this was due
> to an omission at their end. (I confess I really don't know what that
> information is called, or how it gets supplied at their end. All I know is
> that it is somehow transmitted as part of the DTV datastream.)
>
> Well, a day or two later, the program information started appearing for
> that station. I figured it *might* have been on account of my email--big
> slaps on the back for me as an Alert Citizen!--but since they hadn't
> replied, I had no way of knowing.
>
> Then a couple days after that I got a reply back. The station's operations
> manager wrote and told me that they (the station) was supplying that
> information, and therefore if I wasn't seeing it, it was probably due to a
> problem at my end. He suggested doing a complete rescan (not an "update
> scan") on my DTV box.
>
> I wrote back, and he replied to that. Here's what he said, in part:
>
>> Nothing changed on our end. However it is not unheard of for
>> set-top-boxes to need to reload the PSIP tables for a channel once in a
>> while. Forcing a rescan forces the tables to reload. Eventually they
>> will usually reload on their own which is probably what happened in your
>> case.
>
> (I had done nothing to my DTV box this whole time.)
>
> So does anyone know if this is correct? Now there's another station (one
> of the big networks, not a local independent) that's missing its program
> info. Is it possible that my DTV box would selectively omit this
> information for just one or a few stations? Every other station shows this
> info for me, with the exceptions noted above.

IME DVB-T STBs seem particularly prone to mains borne noise and spikes
corrupting the various bits of NVR data, you could try a mains conditioning
socket strip to clean up the supply or run it through a UPS - handy for
power outages that would mess up recordings on a PVR, otherwise doing the
occasional re-scan is not such a big deal.

== 2 of 6 ==
Date: Mon, Apr 4 2011 3:03 pm
From: David Nebenzahl

On 4/4/2011 1:06 PM Ian Field spake thus:

> "David Nebenzahl" <nobody@but.us.chickens> wrote in message
> news:4d98eb6d$0$32442$822641b3@news.adtechcomputers.com...
>
>> So one of my local TV stations seemingly stopped sending program
>> information data--you know, the text that says what's on, what's
>> going to be on, and explaining in more detail what's on. Landing on
>> that channel, display simply showed "- No program information -".
>> (BTW, this seems to be the default for all of the minor little
>> public TV stations around here, not including the big PBS stations
>> which are diligent about supplying this information.)
>>
>> OK, no big deal, but slightly annoying, so I fired off an email to
>> the station, alerting them to this situation and asking them if
>> this was due to an omission at their end. (I confess I really don't
>> know what that information is called, or how it gets supplied at
>> their end. All I know is that it is somehow transmitted as part of
>> the DTV datastream.)
>>
>> Well, a day or two later, the program information started appearing
>> for that station. I figured it *might* have been on account of my
>> email--big slaps on the back for me as an Alert Citizen!--but since
>> they hadn't replied, I had no way of knowing.
>>
>> Then a couple days after that I got a reply back. The station's
>> operations manager wrote and told me that they (the station) was
>> supplying that information, and therefore if I wasn't seeing it, it
>> was probably due to a problem at my end. He suggested doing a
>> complete rescan (not an "update scan") on my DTV box.
>>
>> I wrote back, and he replied to that. Here's what he said, in part:
>>
>>
>>> Nothing changed on our end. However it is not unheard of for
>>> set-top-boxes to need to reload the PSIP tables for a channel
>>> once in a while. Forcing a rescan forces the tables to reload.
>>> Eventually they will usually reload on their own which is
>>> probably what happened in your case.
>>
>> (I had done nothing to my DTV box this whole time.)
>>
>> So does anyone know if this is correct? Now there's another station
>> (one of the big networks, not a local independent) that's missing
>> its program info. Is it possible that my DTV box would selectively
>> omit this information for just one or a few stations? Every other
>> station shows this info for me, with the exceptions noted above.
>
> IME DVB-T STBs seem particularly prone to mains borne noise and spikes
> corrupting the various bits of NVR data, you could try a mains conditioning
> socket strip to clean up the supply or run it through a UPS - handy for
> power outages that would mess up recordings on a PVR, otherwise doing the
> occasional re-scan is not such a big deal.

Are you sure of this, or is this just hand-waving? (Like the old "reboot
your computer" advice of the techie on the other end of the phone, no
matter what the problem.)

I ask because after doing a rescan, *another* channel still shows no
program information, so obviously the scan did nothing to correct that.
I still have no idea if the problem is at their end or my end, but the
scan didn't help.

Does someone here *actually know* how this information is handled,
propagated, etc?

--
The current state of literacy in our advanced civilization:

yo
wassup
nuttin
wan2 hang
k
where
here
k
l8tr
by

- from Usenet (what's *that*?)

== 3 of 6 ==
Date: Mon, Apr 4 2011 2:13 pm
From: "Ian Field"

"David Nebenzahl" <nobody@but.us.chickens> wrote in message
news:4d9a3211$0$7784$822641b3@news.adtechcomputers.com...
> On 4/4/2011 1:06 PM Ian Field spake thus:
>
>> "David Nebenzahl" <nobody@but.us.chickens> wrote in message
>> news:4d98eb6d$0$32442$822641b3@news.adtechcomputers.com...
>>
>>> So one of my local TV stations seemingly stopped sending program
>>> information data--you know, the text that says what's on, what's
>>> going to be on, and explaining in more detail what's on. Landing on
>>> that channel, display simply showed "- No program information -".
>>> (BTW, this seems to be the default for all of the minor little
>>> public TV stations around here, not including the big PBS stations
>>> which are diligent about supplying this information.)
>>>
>>> OK, no big deal, but slightly annoying, so I fired off an email to
>>> the station, alerting them to this situation and asking them if
>>> this was due to an omission at their end. (I confess I really don't
>>> know what that information is called, or how it gets supplied at
>>> their end. All I know is that it is somehow transmitted as part of
>>> the DTV datastream.)
>>>
>>> Well, a day or two later, the program information started appearing
>>> for that station. I figured it *might* have been on account of my
>>> email--big slaps on the back for me as an Alert Citizen!--but since
>>> they hadn't replied, I had no way of knowing.
>>>
>>> Then a couple days after that I got a reply back. The station's
>>> operations manager wrote and told me that they (the station) was
>>> supplying that information, and therefore if I wasn't seeing it, it
>>> was probably due to a problem at my end. He suggested doing a
>>> complete rescan (not an "update scan") on my DTV box.
>>>
>>> I wrote back, and he replied to that. Here's what he said, in part:
>>>
>>>
>>>> Nothing changed on our end. However it is not unheard of for
>>>> set-top-boxes to need to reload the PSIP tables for a channel
>>>> once in a while. Forcing a rescan forces the tables to reload.
>>>> Eventually they will usually reload on their own which is
>>>> probably what happened in your case.
>>>
>>> (I had done nothing to my DTV box this whole time.)
>>>
>>> So does anyone know if this is correct? Now there's another station
>>> (one of the big networks, not a local independent) that's missing
>>> its program info. Is it possible that my DTV box would selectively
>>> omit this information for just one or a few stations? Every other
>>> station shows this info for me, with the exceptions noted above.
>>
>> IME DVB-T STBs seem particularly prone to mains borne noise and spikes
>> corrupting the various bits of NVR data, you could try a mains
>> conditioning socket strip to clean up the supply or run it through a
>> UPS - handy for power outages that would mess up recordings on a PVR,
>> otherwise doing the occasional re-scan is not such a big deal.
>
> Are you sure of this, or is this just hand-waving? (Like the old "reboot
> your computer" advice of the techie on the other end of the phone, no
> matter what the problem.)
>
> I ask because after doing a rescan, *another* channel still shows no
> program information, so obviously the scan did nothing to correct that. I
> still have no idea if the problem is at their end or my end, but the scan
> didn't help.
>
> Does someone here *actually know* how this information is handled,
> propagated, etc?

Various DVB-T faults get discussed on uk.tech.digital-tv so you could try
asking there.

A search of the newsgroup list on the server I connect to only found uk, Aus
& ru digital TV newsgroups.

== 4 of 6 ==
Date: Mon, Apr 4 2011 3:24 pm
From: David Nebenzahl

On 4/4/2011 2:13 PM Ian Field spake thus:

> "David Nebenzahl" <nobody@but.us.chickens> wrote in message
> news:4d9a3211$0$7784$822641b3@news.adtechcomputers.com...
>
>> Does someone here *actually know* how this information is handled,
>> propagated, etc?
>
> Various DVB-T faults get discussed on uk.tech.digital-tv so you could try
> asking there.

You use the term "DVB-T" as if that's supposed to mean something to me.
I'd never heard this term before.

OK, so it appears to be a *prospective* worldwide DTV standards-setting
body. (Looks suspiciously like yet another Euro-standard being pushed on
us, but never mind.)

But is this even applicable to the US? Not sure, even after reading
this, with no mention of DVB-T applying to us:

http://www.dvb.org/about_dvb/dvb_worldwide/usa

In any case, I'm still looking forward to someone *here* who has at
least an inkling of how textual program information is handled *here*
(the US, where I live).

--
The current state of literacy in our advanced civilization:

yo
wassup
nuttin
wan2 hang
k
where
here
k
l8tr
by

- from Usenet (what's *that*?)

== 5 of 6 ==
Date: Mon, Apr 4 2011 2:29 pm
From: "Ian Field"

"David Nebenzahl" <nobody@but.us.chickens> wrote in message
news:4d9a36ed$0$11893$822641b3@news.adtechcomputers.com...
> On 4/4/2011 2:13 PM Ian Field spake thus:
>
>> "David Nebenzahl" <nobody@but.us.chickens> wrote in message
>> news:4d9a3211$0$7784$822641b3@news.adtechcomputers.com...
>>
>>> Does someone here *actually know* how this information is handled,
>>> propagated, etc?
>>
>> Various DVB-T faults get discussed on uk.tech.digital-tv so you could try
>> asking there.
>
> You use the term "DVB-T" as if that's supposed to mean something to me.
> I'd never heard this term before.
>
> OK, so it appears to be a *prospective* worldwide DTV standards-setting
> body. (Looks suspiciously like yet another Euro-standard being pushed on
> us, but never mind.)
>
> But is this even applicable to the US? Not sure, even after reading this,
> with no mention of DVB-T applying to us:
>
> http://www.dvb.org/about_dvb/dvb_worldwide/usa
>
> In any case, I'm still looking forward to someone *here* who has at least
> an inkling of how textual program information is handled *here* (the US,
> where I live).

You don't seem very grateful for the attempts to help you, so I think I've
reached the limit of what I can do for you.

== 6 of 6 ==
Date: Mon, Apr 4 2011 3:32 pm
From: David Nebenzahl

On 4/4/2011 2:29 PM Ian Field spake thus:

> "David Nebenzahl" <nobody@but.us.chickens> wrote in message
> news:4d9a36ed$0$11893$822641b3@news.adtechcomputers.com...
>
>> On 4/4/2011 2:13 PM Ian Field spake thus:
>>
>>> "David Nebenzahl" <nobody@but.us.chickens> wrote in message
>>> news:4d9a3211$0$7784$822641b3@news.adtechcomputers.com...
>>>
>>>> Does someone here *actually know* how this information is
>>>> handled, propagated, etc?
>>>
>>> Various DVB-T faults get discussed on uk.tech.digital-tv so you
>>> could try asking there.
>>
>> You use the term "DVB-T" as if that's supposed to mean something to
>> me. I'd never heard this term before.
>>
>> OK, so it appears to be a *prospective* worldwide DTV
>> standards-setting body. (Looks suspiciously like yet another
>> Euro-standard being pushed on us, but never mind.)
>>
>> But is this even applicable to the US? Not sure, even after reading
>> this, with no mention of DVB-T applying to us:
>>
>> http://www.dvb.org/about_dvb/dvb_worldwide/usa
>>
>> In any case, I'm still looking forward to someone *here* who has at
>> least an inkling of how textual program information is handled
>> *here* (the US, where I live).
>
> You don't seem very grateful for the attempts to help you, so I think I've
> reached the limit of what I can do for you.

Well, you haven't been very helpful, so I guess we're even.

--
The current state of literacy in our advanced civilization:

yo
wassup
nuttin
wan2 hang
k
where
here
k
l8tr
by

- from Usenet (what's *that*?)

==============================================================================
TOPIC: InovaBrasil 04_04_11
http://groups.google.com/group/sci.electronics.repair/t/ce8ea78c8d8aab3d?hl=en
==============================================================================

== 1 of 1 ==
Date: Mon, Apr 4 2011 1:18 pm
From: Rogerio

As mais lidas da semana em http://inovabrasil.blogspot.com

1. Ceunsp: Estudante desenvolve fresadora CNC de R$ 10 mil
2. Pesquisadores brasileiros propõem uma ferramenta biotecnológica
para recuperar o desenvolvimento de óvulos de mulheres inférteis
3. E.S. - levar inovação ao cotidiano das micro e pequenas empresas
4. INPI - sistema para agilizar cadastro dos pedidos de patentes do
exterior a partir de abril
5. Prêmio Pemberton - abertas inscrições
6. Físicos brasileiros desenvolvem método para estimar a precisão
de medição em sistemas quânticos.
7. DAAD - Aberta seleção para master na Alemanha
8. Em 1876 Graham Bell obtinha a patente do telefone
9. UFPR e Petrobras inauguram laboratório
10. USP - Bolsas de Pós Graduação em Educação
11. Inmetro - Apoio à inovação
12. FCF - USP : vaga para pós-doutoramento
13. Embrapa - Pesquisa busca recuperar população de peixes nativos
14. ArcelorMittal - Faturamento cresceu 20% no Brasil em 2010
15. IEA USP - Envelhecimento e Urbanização
16. Brasil e EUA - assinados acordos para pesquisas

InovaBrasil - Assinaturas : inovabrasil.assina@gmail.com
Twitter: @Inovabrasil2010

==============================================================================
TOPIC: Looking for a TAA621AX1 audio amp chip
http://groups.google.com/group/sci.electronics.repair/t/f7e4c026e133ca72?hl=en
==============================================================================

== 1 of 4 ==
Date: Mon, Apr 4 2011 2:40 pm
From: Bruce Campbell

Hi Everyone,
Looking for a TAA621AX1 single channel audio chip. If someone could
point me in the right direction to where I could find one, that would
be great. If anybody has one in his spares box, let me know!
Thanks,
P

== 2 of 4 ==
Date: Mon, Apr 4 2011 3:48 pm
From: David Nebenzahl

On 4/4/2011 2:40 PM Bruce Campbell spake thus:

> Looking for a TAA621AX1 single channel audio chip. If someone could
> point me in the right direction to where I could find one, that would
> be great. If anybody has one in his spares box, let me know!
> Thanks,
> P

Did you even try a Google search? I did, and came up with this page,
which makes it look like it's available from at least 2 suppliers:

http://octopart.com/taa621ax1-stmicroelectronics-10352435

(didn't check further)

--
The current state of literacy in our advanced civilization:

yo
wassup
nuttin
wan2 hang
k
where
here
k
l8tr
by

- from Usenet (what's *that*?)

== 3 of 4 ==
Date: Mon, Apr 4 2011 3:10 pm
From: Bruce Campbell

On Apr 4, 5:48 pm, David Nebenzahl <nob...@but.us.chickens> wrote:
> On 4/4/2011 2:40 PM Bruce Campbell spake thus:
>
> > Looking for a TAA621AX1 single channel audio chip. If someone could
> > point me in the right direction to where I could find one, that would
> > be great. If anybody has one in his spares box, let me know!
> > Thanks,
> > P
>
> Did you even try a Google search? I did, and came up with this page,
> which makes it look like it's available from at least 2 suppliers:
>
> http://octopart.com/taa621ax1-stmicroelectronics-10352435
>
> (didn't check further)
>
> --
> The current state of literacy in our advanced civilization:
>
> yo
> wassup
> nuttin
> wan2 hang
> k
> where
> here
> k
> l8tr
> by
>
> - from Usenet (what's *that*?)

Thanks for the links. I don't know if these guys sell to individuals
or just to companies. I'll give it a try.

== 4 of 4 ==
Date: Mon, Apr 4 2011 3:11 pm
From: "Gareth Magennis"

"David Nebenzahl" <nobody@but.us.chickens> wrote in message
news:4d9a3c9e$0$32442$822641b3@news.adtechcomputers.com...
> On 4/4/2011 2:40 PM Bruce Campbell spake thus:
>
>> Looking for a TAA621AX1 single channel audio chip. If someone could
>> point me in the right direction to where I could find one, that would
>> be great. If anybody has one in his spares box, let me know!
>> Thanks,
>> P
>
> Did you even try a Google search? I did, and came up with this page, which
> makes it look like it's available from at least 2 suppliers:
>
> http://octopart.com/taa621ax1-stmicroelectronics-10352435
>
> (didn't check further)
>
>

Well if you had checked further you would find these are companies that are
willing to supply devices in industrial quantities only.

I think Bruce is looking for just the one.

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