Toshiba TV29C90 problem; Image fades to black...

[gareth magennis]

"Eeyore" <rabbitsfriendsandrelations@hotmail.com> wrote in message
news:48360954.D5D333B@hotmail.com...

Gareth Magennis wrote:

"Dave Plowman (News)" <dave@davenoise.co.uk> wrote
Eeyore <rabbitsfriendsandrelations@hotmail.com> wrote:

Wrap some aluminium foil around a small piece of expanded
polystyrene,
then you can just push the chips into the sandwich and keep the lot
in
a plastic box. The foil shorts all the pins together so there can
be
no potential difference between any.

Aluminium foil is a BAD idea. In the event that there is any
appreciable
charge on a given pin, pushing it into aluminium foil will discharge
it
*quickly* and the resulting current may kill it.

I've just received some kits from Jaycar where they've used this very
method. I must admit to being surprised - everyone else seems to use
the
correct foam.

Are there any Data to show the actual risk involved using this method?

See manufacturers' advice.


I accept that best practice is always best, but what do we know about
the
reality of the situation?
Don't forget we are discussing the storage of small numbers of IC's in
somebodys workshop.

A small sheet of conductive foam isn't expensive and I keep all the small
pieces that ICs come shipped in. These often fit small storage drawers
very
nicely.

Graham

I do the same as I get lots of it with chips that don't even need it. The
OP I presume doesn't have any. Anyway best practice is obviously to use the
right stuff, in the meantime the foil should provide a degree of protection
better than nothing. I don't think I will be recommending foil in the
future though!


Gareth.

 

[Dave Plowman (News)]

In article <s2uZj.28$No6.11@newsfe12.ams2>,
gareth magennis <gareth.magennis@ntlworld.com> wrote:

I do the same as I get lots of it with chips that don't even need it.

Yes. It seems strange that all chips seem to be packaged in the same way.

I must admit to never having taken any precautions when fitting any chip -
but then I don't wear any artificial fabric clothes.

--
*If God dropped acid, would he see people?

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

 

[dBc]

Greetings UCLAN..

The question can still be posed to the good folks at Sony Service out
in San Jose or L.A., CA. as I recall. Writing them with your questions
should reveal an answer hopefully, before Christmas. Maybe MUCH
sooner..

Consider:
http://pro.sony.com/bbsc/ssr/services.servicesprograms.bbsccms-services-servicesprograms-servicecenterlocations.shtml

Cheers,
Mr. Mentor



"UCLAN" <nomail@thanks.org> wrote in message
news:m%hZj.1807$7k1.756@newsfe24.lga...
| (1) I have a paralyzed vocal cord and cannot communicate well over
the phone.
| (2) I do not have the VCR in question, but was inquiring because a
distant
| relative wanted to "borrow" some of my SVHS recordings.
|
| I thought the question was pretty clear. I don't want/need the
service
| manuals, I just wanted to know if it had SQPB. But thanks for your
interest.
|
| dBc wrote:
|
| > Greetings..
| >
| > Have you considered giving Sony Service a call and asking? In
| > addition, simply getting a hold the service manual through Sony
| > Service. These are possible solutions.
| >
| > Cheers,
| > Mr. Mentor
| >
| >
| > "UCLAN" <nomail@thanks.org> wrote in message
| > news:OFOXj.44607$Fc1.32653@newsfe07.phx...
| > | Does anyone here know if the Sony SLV-P30HF VCR has SQPB (SVHS
Quasi
| > | playback) circuitry? Thanks.

 

[Gareth Magennis]

"Allen" <allen.versfeld@gmail.com> wrote in message
newsp.ubkak9o2h37c9k@supermole.mole.boldlygoingnowhere.org...

On Thu, 22 May 2008 16:44:34 +0200, Gareth Magennis
sound.service@btconnect.com> wrote:



snip




dBc is either a Troll or a White South African.



Gareth.


Speaking as a white south african, it's amazing what foreign nationals
will say to you about those filthy *racial group/sex/culture* because
they just assume you're the same bigotted pig as them. So far, in my
limited experience, the brits lead the way (and deny it the most
strongly), followed closely by north europeans. American's seem to
be far more careful about what they let slip. The whole thing is both
offensive and depressing.

Trolls, however, are fair game. Death to trolls.

Allen

I'm sorry if you think that I think all White South Africans think the same.
The tone of this posters reply just doesn't sound like it comes from Europe
or North America, so I made a joke, attempting to make fun of this ludicrous
and outdated type of predudice.
I have met some "privileged" White South Africans, not many, but was quite
astounded to hear certain attitudes that seem to be buried in the culture,
that you just don't hear in Europe. Similarly, I have met quite a lot more
Israelis while travelling in India, and again was astounded to hear certain
attitudes toward whole races of people, not least the Indians whose country
they were a guest in.
Now that is not to say that I think all Israelis have a bad attitude, but if
I hear a similar attitude from someone, I may liken it to the attitudes I
have experienced when meeting travelling Israelis, or White South Africans
for that matter. In this case I heard something and made a joke about it, I
didn't mean to offend anyone, except those with thise sort of attitudes.

I know the British also have some very arrogant attitudes, and I have to say
that when I am abroad, I am often embarrassed to be British, to the point
where I avoid other British people. I think "we" deserve any jokes you can
throw at us to be perfectly frank.

I dunno, humour is humour. There's a great debate about whether Holocaust
jokes are acceptable or not, or at what point do we say "now it's OK to make
the joke, last week it wasn't".


Gareth.

 

[Gareth Magennis]

"bz" <bz+ser@ch100-5.chem.lsu.edu> wrote in message
news:Xns9AA7374E297D9WQAHBGMXSZHVspammote@130.39.198.139...

"Dave Plowman (News)" <dave@davenoise.co.uk> wrote in
news:4fa3df273cdave@davenoise.co.uk:

In article <s2uZj.28$No6.11@newsfe12.ams2>,
gareth magennis <gareth.magennis@ntlworld.com> wrote:
I do the same as I get lots of it with chips that don't even need it.

Yes. It seems strange that all chips seem to be packaged in the same
way.

I must admit to never having taken any precautions when fitting any chip
- but then I don't wear any artificial fabric clothes.

Perhaps you live in an area where the relative humidity is rather high.
In which case, static electricity is seldom a problem.

If you lived in [for example] Wyoming, where RH is often in the low teens
or lower, THEN you would need to be careful. And more careful in the
winter [warming air dries it].

I always know when the humidity is low because then every time I get out of
my car I get a shock when I touch the bodywork. The static comes from
sliding myself off the seat on the way out. It only ever happens in warm
weather. Probably not a good idea to be holding any RAM chips or sensitive
Radar detectors during these times. Or a small animal.


Gareth.

 

[Gareth Magennis]

"bz" <bz+ser@ch100-5.chem.lsu.edu> wrote in message
news:Xns9AA7374E297D9WQAHBGMXSZHVspammote@130.39.198.139...

"Dave Plowman (News)" <dave@davenoise.co.uk> wrote in
news:4fa3df273cdave@davenoise.co.uk:

In article <s2uZj.28$No6.11@newsfe12.ams2>,
gareth magennis <gareth.magennis@ntlworld.com> wrote:
I do the same as I get lots of it with chips that don't even need it.

Yes. It seems strange that all chips seem to be packaged in the same
way.

I must admit to never having taken any precautions when fitting any chip
- but then I don't wear any artificial fabric clothes.

Perhaps you live in an area where the relative humidity is rather high.
In which case, static electricity is seldom a problem.

If you lived in [for example] Wyoming, where RH is often in the low teens
or lower, THEN you would need to be careful. And more careful in the
winter [warming air dries it].

I always know when the humidity is low because then every time I get out of
my car I get a shock when I touch the bodywork. The static comes from
sliding myself off the seat on the way out. It only ever happens in warm
weather. Probably not a good idea to be holding any RAM chips or sensitive
Radar detectors during these times. Or a small animal.


Gareth.

 

[bz]

"Dave Plowman (News)" <dave@davenoise.co.uk> wrote in
news:4fa3df273cdave@davenoise.co.uk:

In article <s2uZj.28$No6.11@newsfe12.ams2>,
gareth magennis <gareth.magennis@ntlworld.com> wrote:
I do the same as I get lots of it with chips that don't even need it.

Yes. It seems strange that all chips seem to be packaged in the same
way.

I must admit to never having taken any precautions when fitting any chip
- but then I don't wear any artificial fabric clothes.

Perhaps you live in an area where the relative humidity is rather high.
In which case, static electricity is seldom a problem.

If you lived in [for example] Wyoming, where RH is often in the low teens
or lower, THEN you would need to be careful. And more careful in the
winter [warming air dries it].






--
bz 73 de N5BZ k

please pardon my infinite ignorance, the set-of-things-I-do-not-know is an
infinite set.

bz+ser@ch100-5.chem.lsu.edu remove ch100-5 to avoid spam trap

 

[bz]

"Dave Plowman (News)" <dave@davenoise.co.uk> wrote in
news:4fa3df273cdave@davenoise.co.uk:

In article <s2uZj.28$No6.11@newsfe12.ams2>,
gareth magennis <gareth.magennis@ntlworld.com> wrote:
I do the same as I get lots of it with chips that don't even need it.

Yes. It seems strange that all chips seem to be packaged in the same
way.

I must admit to never having taken any precautions when fitting any chip
- but then I don't wear any artificial fabric clothes.

Perhaps you live in an area where the relative humidity is rather high.
In which case, static electricity is seldom a problem.

If you lived in [for example] Wyoming, where RH is often in the low teens
or lower, THEN you would need to be careful. And more careful in the
winter [warming air dries it].






--
bz 73 de N5BZ k

please pardon my infinite ignorance, the set-of-things-I-do-not-know is an
infinite set.

bz+ser@ch100-5.chem.lsu.edu remove ch100-5 to avoid spam trap

 

[bz]

"Michael A. Terrell" <mike.terrell@earthlink.net> wrote in
news:48366A2D.58760989@earthlink.net:

bz wrote:

Report them to the FCC. Recently FAX spammers have been fined tens of
thousands of dollars.

You can also SUE the FAX spammer in small claims court.

Google for
fax spammer fined


That only works for people in the US. My method works anywhere.

You don't have to live in a country to sue in that country nor to report
law violators in that country to regulators in that country.

That said, I did stop a 'junk faxer' a couple of years ago by a somewhat
similar method.
They were sending 'pump and dump' stock tip faxes, with a 1 800 number at
the bottom to 'opt out'.
Of course, opting out had no effect...or rather confirmed your phone number
to the junk faxers.

I know this because I tried a couple of times and just got more junk faxes.

So I programmed my computer to repeatedly call the 'opt out' number and
'press the right buttons to "opt out"'.
Repeatedly.
Over and over.
All night long.

I think I only had to run it a couple of nights before they stopped hitting
my fax machine.





--
bz

please pardon my infinite ignorance, the set-of-things-I-do-not-know is an
infinite set.

bz+spr@ch100-5.chem.lsu.edu remove ch100-5 to avoid spam trap

 

[bz]

"Michael A. Terrell" <mike.terrell@earthlink.net> wrote in
news:48366A2D.58760989@earthlink.net:

bz wrote:

Report them to the FCC. Recently FAX spammers have been fined tens of
thousands of dollars.

You can also SUE the FAX spammer in small claims court.

Google for
fax spammer fined


That only works for people in the US. My method works anywhere.

You don't have to live in a country to sue in that country nor to report
law violators in that country to regulators in that country.

That said, I did stop a 'junk faxer' a couple of years ago by a somewhat
similar method.
They were sending 'pump and dump' stock tip faxes, with a 1 800 number at
the bottom to 'opt out'.
Of course, opting out had no effect...or rather confirmed your phone number
to the junk faxers.

I know this because I tried a couple of times and just got more junk faxes.

So I programmed my computer to repeatedly call the 'opt out' number and
'press the right buttons to "opt out"'.
Repeatedly.
Over and over.
All night long.

I think I only had to run it a couple of nights before they stopped hitting
my fax machine.





--
bz

please pardon my infinite ignorance, the set-of-things-I-do-not-know is an
infinite set.

bz+spr@ch100-5.chem.lsu.edu remove ch100-5 to avoid spam trap

 

[DaveM]

<anglomont@yahoo.com> wrote in message
news:e9ede4c8-a93c-4d40-8a59-7ecb7bb3b571@f36g2000hsa.googlegroups.com...

Can anyone confirm whether following microwave oven components are
dead
-diode hvr1x8019:tested with analog ohm meter-short both directions
-rectifier 2x062h 8025:..open in both directions
tnx

The diode that reads short in both directions is definitely bad. The other, if
it's a high voltage rectifier, might have too high Vf to be properly tested by a
multimeter. Those are best tested by a Huntron Tracker or by replacement.

--
Dave M
MasonDG44 at comcast dot net (Just substitute the appropriate characters in the
address)

Experience: What you get when you don't get what you want

 

[gareth magennis]

"JR North" <junkjasonrnorth@bigfoot.com> wrote in message
newsOmdnSZ-YLv_uarVnZ2dnUVZ_rjinZ2d@seanet.com...

I don't know the layout, ribbon density, etc, but ribbon cable is pretty
standardized. I don't see why you could'nt solder a ribbon header to the
boards, and just trim the ribbon and lock it in.
JR

http://www.saab9-5.com/howto/sidrepair.htm

 

[Phil Allison]

<anglomont@yahoo.com>

Can anyone confirm whether following microwave oven components are
dead
-diode hvr1x8019:tested with analog ohm meter-short both directions

** Dead for sure.

-rectifier 2x062h 8025:..open in both directions

** Probably OK.

Testing such high voltage diodes ( really a multi-diode stack ) requires a
source of voltage more than what a DMM or analogue ohm meter has available.

Try connecting a 9 volt radio battery in both directions, while monitoring
current flow with your meter.


...... Phil

 

[Phil Allison]

<anglomont@yahoo.com>

Can anyone confirm whether following microwave oven components are
dead
-diode hvr1x8019:tested with analog ohm meter-short both directions

** Dead for sure.

-rectifier 2x062h 8025:..open in both directions

** Probably OK.

Testing such high voltage diodes ( really a multi-diode stack ) requires a
source of voltage more than what a DMM or analogue ohm meter has available.

Try connecting a 9 volt radio battery in both directions, while monitoring
current flow with your meter.


...... Phil

 

[Paul E. Schoen]

"Phil Allison" <philallison@tpg.com.au> wrote in message
news:69pgblF346q3vU1@mid.individual.net...

anglomont@yahoo.com

Can anyone confirm whether following microwave oven components are
dead
-diode hvr1x8019:tested with analog ohm meter-short both directions


** Dead for sure.

-rectifier 2x062h 8025:..open in both directions


** Probably OK.

Testing such high voltage diodes ( really a multi-diode stack ) requires
a source of voltage more than what a DMM or analogue ohm meter has
available.

Try connecting a 9 volt radio battery in both directions, while
monitoring current flow with your meter.

With some sort of current limiter, like a light bulb, of course.

Paul

 

[Phil Allison]

"Paul E. Schoen Smug Pig "

** Dead for sure.

-rectifier 2x062h 8025:..open in both directions


** Probably OK.

Testing such high voltage diodes ( really a multi-diode stack ) requires
a source of voltage more than what a DMM or analogue ohm meter has
available.

Try connecting a 9 volt radio battery in both directions, while
monitoring current flow with your meter.

With some sort of current limiter, like a light bulb, of course.

** Not essential.

A standard 9 volt radio battery will only deliver about 200mA into a diode
stack that conducts at 6 to 10 volts - plus a test takes only a few
seconds.

Best avoid alkaline types for this, unless it is near flat.


...... Phil

 

[JANA]

It is an insulated metallic tape. Both outside surfaces are normaly not
conductive. The idea of this tape is to shield from electrical
interference of which is mostly RF.

When servicing LCD screens and not replacing this tape, I found that at
times there were interference problems. This is why the manufactures
went to the extra expense to use this type of tape.

--

JANA
_____


"NoSp" <none@none.none> wrote in message
news:4837f3ad$1@news.broadpark.no...
I'm repairing an LCD display and metallic tape is used in several
places, as shown in these photos marked "sticky foil":
http://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/

There are several types of "metallic tape" or "aluminum tape" in the
market, but I'm not sure what kind of characteristics I'm looking for,
and I really don't know what the LCD display needs it for anyway
-reducing electromagnetic and radio interference and taking away heat?

I first thought the tape should be electrical conductive, but using a
continuity testing function in a multimeter this seems not to be the
case. So what am I looking for?
Will this do?:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=110254391809

 

[JANA]

It is an insulated metallic tape. Both outside surfaces are normaly not
conductive. The idea of this tape is to shield from electrical
interference of which is mostly RF.

When servicing LCD screens and not replacing this tape, I found that at
times there were interference problems. This is why the manufactures
went to the extra expense to use this type of tape.

--

JANA
_____


"NoSp" <none@none.none> wrote in message
news:4837f3ad$1@news.broadpark.no...
I'm repairing an LCD display and metallic tape is used in several
places, as shown in these photos marked "sticky foil":
http://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/

There are several types of "metallic tape" or "aluminum tape" in the
market, but I'm not sure what kind of characteristics I'm looking for,
and I really don't know what the LCD display needs it for anyway
-reducing electromagnetic and radio interference and taking away heat?

I first thought the tape should be electrical conductive, but using a
continuity testing function in a multimeter this seems not to be the
case. So what am I looking for?
Will this do?:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=110254391809

 

[bz]

"Michael A. Terrell" <mike.terrell@earthlink.net> wrote in
news:4837CC17.792834DB@earthlink.net:

Gareth Magennis wrote:

I always know when the humidity is low because then every time I get
out of my car I get a shock when I touch the bodywork. The static
comes from sliding myself off the seat on the way out. It only ever
happens in warm weather. Probably not a good idea to be holding any
RAM chips or sensitive Radar detectors during these times. Or a small
animal.


You can damaged an IC at levels that won't generate a spark.

Yep.

OTOH,
'low humidity' in Central Florida is still over 50%.

Likewise here, in Baton Rouge, LA.




--
bz 73 de N5BZ k

please pardon my infinite ignorance, the set-of-things-I-do-not-know is an
infinite set.

bz+ser@ch100-5.chem.lsu.edu remove ch100-5 to avoid spam trap

 

[bz]

"Michael A. Terrell" <mike.terrell@earthlink.net> wrote in
news:4837CC17.792834DB@earthlink.net:

Gareth Magennis wrote:

I always know when the humidity is low because then every time I get
out of my car I get a shock when I touch the bodywork. The static
comes from sliding myself off the seat on the way out. It only ever
happens in warm weather. Probably not a good idea to be holding any
RAM chips or sensitive Radar detectors during these times. Or a small
animal.


You can damaged an IC at levels that won't generate a spark.

Yep.

OTOH,
'low humidity' in Central Florida is still over 50%.

Likewise here, in Baton Rouge, LA.




--
bz 73 de N5BZ k

please pardon my infinite ignorance, the set-of-things-I-do-not-know is an
infinite set.

bz+ser@ch100-5.chem.lsu.edu remove ch100-5 to avoid spam trap