Toshiba TV29C90 problem; Image fades to black...

Hi all,

I just thought I'd let you know she's alive!

My ex TV repair man mate managed to pop in to where the TV is
yesterday and had a look over it for me.

First he checked it over visually (nothing wrong with what I had done)
but did find a couple of 'suspect' joints and re-soldered them. He
powered up but with no improvement. He then used my DMM to do some
basic checks (with it on, something I wasn't going to do) and felt
there wasn't the correct voltage on one of the mains input caps (he
said it was just i/p filter, bridge, cap so ~300v DC but it was only
~120). He tried a few more points and still no luck.

He powered off and traced the i/p PSU path and it looked like the i/p
power went throught the de-gauss coil? One of the pads for the PCB >
coil plug / socket was broken away from the main track (USA = trace?)
and I made up a bit of bridging wire (3 strands from some fine flex)
and he bridged it. Turn on, and we are alive again!

So, the reason I missed the couple of dry joints that he found were:

1) He has done TV repair for a living whereas I have mainly done low
voltage / digital stuff (~ 5/12V ).

2) I didn't like to pull stuff about as much as he did!

Anyway, it looks like its running (I left it on for the rest of the
evening) but not sure if we have found the intermittent fault that was
the reason for my mate dumping it in the first place (it would cut out
randomly 5 mins > 5 days) ;-(

All the best ..

T i m
 
You just explained a classic example why it is important that you call a
properly trained and knowledgeable TV service person to do the repairs.
There is no way an inexperienced person would find these types of faults
from guessing at them. Going by your description, he worked things out by
doing some measurements, and he has an understanding of what is going on,
and what to expect.

What he did would be very dangerous for someone who is not properly trained
and experienced with this type of service work. The voltages and current
sources inside of a TV set can be lethal. Even after the power is switched
off, and the set is unplugged from the AC mains, the main electrolytic
capacitors can still cause injury to someone probing around, and not knowing
what they are doing.

--

Jerry G.
=====

"T i m" <news@spaced.me.uk> wrote in message
news:ck99v0h3i9e3mqomtjbgv8tn01bhbe7vbo@4ax.com...
Hi all,

I just thought I'd let you know she's alive!

My ex TV repair man mate managed to pop in to where the TV is
yesterday and had a look over it for me.

First he checked it over visually (nothing wrong with what I had done)
but did find a couple of 'suspect' joints and re-soldered them. He
powered up but with no improvement. He then used my DMM to do some
basic checks (with it on, something I wasn't going to do) and felt
there wasn't the correct voltage on one of the mains input caps (he
said it was just i/p filter, bridge, cap so ~300v DC but it was only
~120). He tried a few more points and still no luck.

He powered off and traced the i/p PSU path and it looked like the i/p
power went throught the de-gauss coil? One of the pads for the PCB >
coil plug / socket was broken away from the main track (USA = trace?)
and I made up a bit of bridging wire (3 strands from some fine flex)
and he bridged it. Turn on, and we are alive again!

So, the reason I missed the couple of dry joints that he found were:

1) He has done TV repair for a living whereas I have mainly done low
voltage / digital stuff (~ 5/12V ).

2) I didn't like to pull stuff about as much as he did!

Anyway, it looks like its running (I left it on for the rest of the
evening) but not sure if we have found the intermittent fault that was
the reason for my mate dumping it in the first place (it would cut out
randomly 5 mins > 5 days) ;-(

All the best ..

T i m
 
So which bytes were corrupt, how did you identify them, and what data did
you use to replace the corrupt data? The most common problem with many RCA
EEPROMS is the audio mute problem. Which byte is bad?

Leonard

"Wildcard" <Slipofthetounge@censored.com> wrote in message
news:41F4F2AF.D30A476@censored.com...
Seems like a lot of work for just a couple corrupted
bytes in the eeprom. In most of the eeprom related
problems I have found none of the eeprom's were
actually bad. The just had corrupted bytes in
the sectors that the micro won't write.

I pull the ic. Read it in a simple eeprom programmer.
fix the corrupted bytes in hex editor. then rewrite
the eeprom. Then it's just a simple matter of
installing a socket and reinstall the ic.

Works almost every time. As far as the orginal startup
data. As I ordered ic's orginally to fix these problems
I read each one and saved by part number. That gave me
my needed orginal settings. The only time I order a
rca orginal eeprom is when I don't have one on file.

Built the programmer out of bits and pieces sitting
around. Got the software off the net.
Click to expand...
 
On Fri, 04 Feb 2005 11:33:04 GMT, bok118@zonnet.nl (Gerard Bok) put
finger to keyboard and composed:

On Fri, 04 Feb 2005 06:02:01 -0500, Jay <none@dev.nul> wrote:

On Fri, 4 Feb 2005 00:56:48 +0100 "David Winter" <d_winter@hotmail.com
wrote in Message id:
4202b987$0$4800$79c14f64@nan-newsreader-05.noos.net>:

[sci.electronics.repair & sci.electronics.components added]

Hello,

I can't find anything about those early PROM chips which are used on a
circuit board I need to fix.

Well, those sheets are in Intel's data catalog.
(OK, it's the 1976 edition, but still :)

e-mail me if you need them
Click to expand...
Lots of crosses at this site:
http://matthieu.benoit.free.fr/cross/2e_.htm

====================================================================
3601-1 74S387 27S20 93417 MB7057 MK4006 6300-1 UPB403 82S126
TBP24SA10

3601 DM74S387

3602 93436 74S570 27S12 MB7058 7620 6305-1 82S130 74S270
====================================================================

Here's one datasheet:
http://www.eletrica.ufsj.edu.br/ensino/eletronica1/82S126.pdf


- Franc Zabkar
--
Please remove one 's' from my address when replying by email.
 
hi!
here I have put the data sheet of texas 256x4 , 512x4 prom
TPB24S10N etc.
http://matthieu.benoit.free.fr/TPB24Sxx_TPB28Sxx_TPB28S2708_o.pdf
Best regards,
Matthieu

Franc Zabkar wrote:
On Fri, 04 Feb 2005 11:33:04 GMT, bok118@zonnet.nl (Gerard Bok) put
finger to keyboard and composed:

On Fri, 04 Feb 2005 06:02:01 -0500, Jay <none@dev.nul> wrote:

On Fri, 4 Feb 2005 00:56:48 +0100 "David Winter" <d_winter@hotmail.com
wrote in Message id:
4202b987$0$4800$79c14f64@nan-newsreader-05.noos.net>:

[sci.electronics.repair & sci.electronics.components added]

Hello,

I can't find anything about those early PROM chips which are used on a
circuit board I need to fix.

Well, those sheets are in Intel's data catalog.
(OK, it's the 1976 edition, but still :)

e-mail me if you need them

Lots of crosses at this site:
http://matthieu.benoit.free.fr/cross/2e_.htm

====================================================================
3601-1 74S387 27S20 93417 MB7057 MK4006 6300-1 UPB403 82S126
TBP24SA10

3601 DM74S387

3602 93436 74S570 27S12 MB7058 7620 6305-1 82S130 74S270
====================================================================

Here's one datasheet:
http://www.eletrica.ufsj.edu.br/ensino/eletronica1/82S126.pdf

- Franc Zabkar
--
Please remove one 's' from my address when replying by email.
Click to expand...
 
Thanks for your help!
I now have the 3601 pinout, however, no way to get the 3602 one.
The Texas collection doesn't include a 512*4 PROM (only a 512*8).
I could trick with the two "Enable" pins of the 3601, supposing one was
suppressed in the 3602 to serve as A8 address line, but I'm not sure whether
all other pins remained unchanged.

Anybody can scan his TI Data Catalog for the 3602 (pinout, voltages) ?


Thanks to all of you,

David.


"Matthieu Benoit" <matthieu.benoit@free.fr> a écrit dans le message de
news:42048AD9.4F19@free.fr...
hi!
here I have put the data sheet of texas 256x4 , 512x4 prom
TPB24S10N etc.
http://matthieu.benoit.free.fr/TPB24Sxx_TPB28Sxx_TPB28S2708_o.pdf
Best regards,
Matthieu

Franc Zabkar wrote:

On Fri, 04 Feb 2005 11:33:04 GMT, bok118@zonnet.nl (Gerard Bok) put
finger to keyboard and composed:

On Fri, 04 Feb 2005 06:02:01 -0500, Jay <none@dev.nul> wrote:

On Fri, 4 Feb 2005 00:56:48 +0100 "David Winter"
d_winter@hotmail.com
wrote in Message id:
4202b987$0$4800$79c14f64@nan-newsreader-05.noos.net>:

[sci.electronics.repair & sci.electronics.components added]

Hello,

I can't find anything about those early PROM chips which are used on
a
circuit board I need to fix.

Well, those sheets are in Intel's data catalog.
(OK, it's the 1976 edition, but still :)

e-mail me if you need them

Lots of crosses at this site:
http://matthieu.benoit.free.fr/cross/2e_.htm

====================================================================
3601-1 74S387 27S20 93417 MB7057 MK4006 6300-1 UPB403 82S126
TBP24SA10

3601 DM74S387

3602 93436 74S570 27S12 MB7058 7620 6305-1 82S130 74S270
====================================================================

Here's one datasheet:
http://www.eletrica.ufsj.edu.br/ensino/eletronica1/82S126.pdf

- Franc Zabkar
--
Please remove one 's' from my address when replying by email.
Click to expand...
 
M & T wrote:
Hi friend,

This could happen to anybody let my benefit be yours.

I was a newbie and have a boarder line genius friend !
Click to expand...
If he's a genius, ask him to explain to you the
difference between boarder and border.
 
Well, thank God he told us...otherwise we would have never noticed.

--
Kim..."A Man Of True Frankenstinean Proportions"
"what" <what@hotmail.com> wrote in message
news:110o2h21dvbg1bf@corp.supernews.com...
The posts from folks who get their feelings hurt over newsgroup comments
are always hilarious. Simply ignore what you don't want to read. It's not
hard to do. Start living in the real world. Leaving this group is your own
fault.

"Tony" <me@privacy.net> wrote in message
news:nhrn01tf1r5tu2ts8tfh52m8rnqeiv17l7@4ax.com...

Good bye.

Tony.
Click to expand...
 
On Thu, 10 Feb 2005 23:34:41 +0000, Tony <me@privacy.net> put finger
to keyboard and composed:

I really don't like the direction this group has taken over the past
few months. People here have become far too criticising to new
posters.

I'm also tired of the bad spelling and grammar - some posters are
bordering on illiterate.
Click to expand...
You've missed the point. The illiteracy is *intentional*. It's a kool
new fad, just like ripped jeans were twenty years ago. A person who
doesn't have the time to reach for a shift key or to punctuate a
sentence is the jet setting cognoscente of today. He/she cannot spare
the milliseconds needed to add legibility to a
stream-of-consciousness-like outpouring of the mind. Their time is too
precious. That wasted second could mean the difference between
catching their next international flight, or being on time for their
next board meeting or some other event on their hectic social
calendar.

Good bye.

Tony.
Click to expand...
Brian: Look. You've got it all wrong. You don't need to follow me. You
don't need to follow anybody! You've got to think for yourselves.
You're all individuals!

Crowd (together): Yes, we're all individuals!

Brian: You're all different!

Crowd (together): Yes, we are all different!

Individual: I'm not.

- from Monty Python's "Life Of Brian".


- Franc Zabkar
--
Please remove one 's' from my address when replying by email.
 
On Fri, 11 Feb 2005 18:19:20 -0500, Dan <prograde49@hotmail.com> put
finger to keyboard and composed:

Franc-My wife's 30-something boss is like that. NEVER a cap in her
emails.
Click to expand...
Franc's Koolness Guide
----------------------
I've noticed that there are varying levels of "koolness". The first
level involves dropping *all* capitalisation. The downside of this
approach is that it appears contrived. Quite simply, if you have to
work at being kool, then you are not kool. More convincing is the
removal of capitals only from within the bodies of sentences. For
example, one could convert all occurrences of "I" to "i". However,
even this approach lacks the spontaneity to be considered really kool.
Much better is to alter every other instance of "I", or to capitalise
every other sentence, or to sneak in the occasional typo, so as to
make it appear that a flying, time constrained finger *accidentally*
slipped off the shift key.

I told her the same thing about the woman; it's a "my time is
too important to waste on common courtesy" affectation.
Click to expand...
Pretentiousness is the character flaw I despise the most, probably
because I see it as the precursor to more serious failings. I try to
ignore these people, but sometimes I'm compelled to retaliate.

Dan

Franc Zabkar wrote:

You've missed the point. The illiteracy is *intentional*. It's a kool
new fad, just like ripped jeans were twenty years ago. A person who
doesn't have the time to reach for a shift key or to punctuate a
sentence is the jet setting cognoscente of today. He/she cannot spare
the milliseconds needed to add legibility to a
stream-of-consciousness-like outpouring of the mind. Their time is too
precious. That wasted second could mean the difference between
catching their next international flight, or being on time for their
next board meeting or some other event on their hectic social
calendar.


Good bye.

Tony.
Click to expand...

- Franc Zabkar
--
Please remove one 's' from my address when replying by email.
 
"Asimov" <Asimov@-removethis-bbs.juxtaposition.dynip.com> writes:

"Franc Zabkar" bravely wrote to "All" (12 Feb 05 11:42:10)
--- on the heady topic of "Re: I'm leaving this newsgroup :-("

FZ> From: Franc Zabkar <fzabkar@optussnet.com.au
FZ> Xref: aeinews sci.electronics.repair:10274

FZ> Pretentiousness is the character flaw I despise the most, probably
FZ> because I see it as the precursor to more serious failings. I try to
FZ> ignore these people, but sometimes I'm compelled to retaliate.

Well, the only people I've ever personally witnessed using all caps
were either too rich to need to know how to write or someone who
couldn't afford the Apple II upper case 80 column upgrade. Now I'm
travelling back memory lane.

BTW "upper case" used to mean small letters. It was a confusing time!
Click to expand...
My Apple II+ has that jumper. :)

--- sam | Sci.Electronics.Repair FAQ Mirror: http://repairfaq.ece.drexel.edu/
Repair | Main Table of Contents: http://repairfaq.ece.drexel.edu/REPAIR/
+Lasers | Sam's Laser FAQ: http://repairfaq.ece.drexel.edu/sam/lasersam.htm
| Mirror Sites: http://repairfaq.ece.drexel.edu/REPAIR/F_mirror.html

Note: These links are hopefully temporary until we can sort out the excessive
traffic on Repairfaq.org.

Important: Anything sent to the email address in the message header above is
ignored unless my full name is included in the subject line. Or, you can
contact me via the Feedback Form in the FAQs.
 
Guard your coconuts!

Oh, hell I've posted an off-topic item I'd better delete it...but my
Norwegian Blue won't let me...

John :-#(#

On Wed, 16 Feb 2005 02:49:14 +1100, Bob Parker
<bobp@bluebottledeletethis.com> wrote:

Let's not go to Camelot... 'tis a silly place.


Franc Zabkar <fzabkar@optussnet.com.au> wrote:

On Sun, 13 Feb 2005 01:27:13 +1100, Bob Parker <bobp@bluebottle.com
put finger to keyboard and composed:

From Fawlty Towers! My faith in this newsgroup, with followers of
Monty Python and John Cleese etc popping up, has almost been restored.
:)

Bob

I just about have the complete set of both. Now for Ripping Yarns ...

pretentious??? moi????

cheers, alan


- Franc Zabkar
Click to expand...
(Please post followups or tech enquires 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."
 
"Franc Zabkar" bravely wrote to "All" (18 Feb 05 19:39:10)
--- on the heady topic of "Re: Panasonic 27" TV w/ no vertical deflection"

FZ> From: Franc Zabkar <fzabkar@optussnet.com.au>
FZ> Xref: aeinews sci.electronics.repair:10853

FZ> On Thu, 17 Feb 2005 20:53:47 -0500, "Steve W. Neas" <sneas@ot.com> put
FZ> finger to keyboard and composed:

I have a TV with no vertical deflection, just the horizontal line
across the center.
It is a Panasonic PV-27D52, chassis KM-D2702, from 2002.

I checked the supply voltages to the vertical deflection chip
(LA7837).
Vcc (pin 1) was 23V (should be 12), and the pump-up supply voltage
(pin 8) was 28.4V (should be 24).
I removed the chip, and Vcc went to 11.8, and the pump-up V went to
29.4.
Click to expand...
FZ> It seems to me that the IC is bad. AFAICS, there must be an internal
FZ> leak between the Vcc8 and Vcc1 supply pins. The 12V rail on Vcc1
FZ> probably supplies other ICs in the set. Hopefully Vcc1 is current
FZ> limited (by a 100 ohm series resistor?), otherwise those other ICs
FZ> would be damaged. After replacing the IC, I'd check to see that this
FZ> resistor, if it exists, has not been heat stressed.


If there is an external diode close to the LA7837 pins change it too.

A*s*i*m*o*v

.... The first rule of intelligent tinkering is to save all the parts.
 
"JAT" <alex@tyrrell2000.free-online.co.uk> wrote in message
news:4218aa26$0$53466$ed2619ec@ptn-nntp-reader03.plus.net...
Just an up-date Barney. I checked the back of the VCR but there is no
adjustment screw, just two scart sockets, two aerial sockets and a timer
reset, whatever that is. When I removed the aerial input lead during
playback the picture did improve. Anyway I disconnected the scart lead
from
my DVD player and connected it to the VCR. Although this had no effect on
the herringbone pattern on the screen whilst in channel 0 the picture did
improve on playback. I assume therefore that because there is only one
scart
socket on the back of my TV I will need another scart lead and a
switchable
selector. I have seen a scart auto selector for Ł25. I assume this type
would be a better idea as it would remove the need for manual switching?

Alex
Click to expand...
As Graham said the screw adjustment has been replaced by a digital
adjustment which is done via the VCR setup - you will have to consult the
VCR's manual for this. I presume the two scart sockets on the VCR means one
is input and one is output. The scart from the DVD player goes into the
input socket and then you just ned one lead out to the TV for both the DVD
and the VCR. If you use a scart input the patterning should disappear
because the RF input is not being used.
I hope this is of some help.
 
Thanks a lot for all the advice. It seems to be working fine now through the
scart. You have already answered my other question regarding whether I could
connect through the VCR rather than a selector box, so I will get another
scart cable tomorrow. Thanks again guys.

Alex

"Barney" <barneyxyzNOSPAM@hotmail.com> wrote in message
As Graham said the screw adjustment has been replaced by a digital
adjustment which is done via the VCR setup - you will have to consult the
VCR's manual for this. I presume the two scart sockets on the VCR means
one
is input and one is output. The scart from the DVD player goes into the
input socket and then you just ned one lead out to the TV for both the DVD
and the VCR. If you use a scart input the patterning should disappear
because the RF input is not being used.
I hope this is of some help.
Click to expand...
 
Well well well
I guess I am a NOOB at this...
O well !
Thanks for caring enough though to post a reply, I though nobody
cares.

Here is a link to the pic

http://members.fortunecity.com/dopeeye/pics/TV1.JPG

Credo elvem etiam vivere





On Sunday, 20 Feb 2005 10:19:54 -500, "Asimov"
<Asimov@-removethis-bbs.juxtaposition.dynip.com> wrote:

"dopeeye@hotmail.com" bravely wrote to "All" (20 Feb 05 04:34:33)
--- on the heady topic of "Re: Mitsubishi VS4507R Crppy Picture - 123_2391.JPG
(0/1) - 123_2391.JP"

do> From: dopeeye@hotmail.com
do> Xref: aeinews sci.electronics.repair:10961

do> =ybegin line=128 size=60684 name=123_2391.JPG

Dopeeye?! You're a complete twit! It's your posting that gave me a
crappy picture! How do you suppose an UNencoded jpg is going to get
through on an ASCII TEXT ONLY usergroup?! Huh? Huh? Huh!

A*s*i*m*o*v

... Sattinger's Law: It works better if you plug it in.
Click to expand...
 
It is not that no one cares, it is mostly that people ignore posts that are
likely to be a PITA to be helpful and where posters don't adequately explain
what is going on and the background info.

Your link does not work. Regardless, this is a V11 chassis. It is
well-known for its tendency to have lots of electrolytic capacitors that
leak electrolyte on all five major circuit boards and cause lots of strange
problems. If you plan to keep the set for any period of time, you might as
well go through it thoroughly and find all of the bad caps before other
problems and more corrosion occur. Expect to find over 100 bad caps. There
are details on this in archives for this group if you search for V11,
VS4507, Mitsubishi capacitors, etc.

For several years, our policy has been not to work on troubleshooting any
problem on V10, V11, or V12 chassis sets until all of the leaky caps and
damage to the boards is corrected. If you don't you will be wasting your
time. Mitsubishi had some bad batches of caps during that time from
Nichicon and other capacitor manufacturers and they have been failing
reliably :) in recent years.

Leonard

<dopeeye@hotmail.com> wrote in message
news:9v3l119i27lp2bu2im819l7o46kskentcc@4ax.com...
Well well well
I guess I am a NOOB at this...
O well !
Thanks for caring enough though to post a reply, I though nobody
cares.

Here is a link to the pic

http://members.fortunecity.com/dopeeye/pics/TV1.JPG

Credo elvem etiam vivere





On Sunday, 20 Feb 2005 10:19:54 -500, "Asimov"
Asimov@-removethis-bbs.juxtaposition.dynip.com> wrote:

"dopeeye@hotmail.com" bravely wrote to "All" (20 Feb 05 04:34:33)
--- on the heady topic of "Re: Mitsubishi VS4507R Crppy Picture -
123_2391.JPG
(0/1) - 123_2391.JP"

do> From: dopeeye@hotmail.com
do> Xref: aeinews sci.electronics.repair:10961

do> =ybegin line=128 size=60684 name=123_2391.JPG

Dopeeye?! You're a complete twit! It's your posting that gave me a
crappy picture! How do you suppose an UNencoded jpg is going to get
through on an ASCII TEXT ONLY usergroup?! Huh? Huh? Huh!

A*s*i*m*o*v

... Sattinger's Law: It works better if you plug it in.
Click to expand...
 
How about a Pic !

<dopeeye@hotmail.com> wrote in message
news:9v3l119i27lp2bu2im819l7o46kskentcc@4ax.com...
Well well well
I guess I am a NOOB at this...
O well !
Thanks for caring enough though to post a reply, I though nobody
cares.

Here is a link to the pic

http://members.fortunecity.com/dopeeye/pics/TV1.JPG

Credo elvem etiam vivere





On Sunday, 20 Feb 2005 10:19:54 -500, "Asimov"
Asimov@-removethis-bbs.juxtaposition.dynip.com> wrote:

"dopeeye@hotmail.com" bravely wrote to "All" (20 Feb 05 04:34:33)
--- on the heady topic of "Re: Mitsubishi VS4507R Crppy Picture -
123_2391.JPG
(0/1) - 123_2391.JP"

do> From: dopeeye@hotmail.com
do> Xref: aeinews sci.electronics.repair:10961

do> =ybegin line=128 size=60684 name=123_2391.JPG

Dopeeye?! You're a complete twit! It's your posting that gave me a
crappy picture! How do you suppose an UNencoded jpg is going to get
through on an ASCII TEXT ONLY usergroup?! Huh? Huh? Huh!

A*s*i*m*o*v

... Sattinger's Law: It works better if you plug it in.
Click to expand...
 
How do I find the archives?

On Tue, 22 Feb 2005 07:32:19 -0500, "Leonard Caillouet" <no@no.com>
wrote:

It is not that no one cares, it is mostly that people ignore posts that are
likely to be a PITA to be helpful and where posters don't adequately explain
what is going on and the background info.

Your link does not work. Regardless, this is a V11 chassis. It is
well-known for its tendency to have lots of electrolytic capacitors that
leak electrolyte on all five major circuit boards and cause lots of strange
problems. If you plan to keep the set for any period of time, you might as
well go through it thoroughly and find all of the bad caps before other
problems and more corrosion occur. Expect to find over 100 bad caps. There
are details on this in archives for this group if you search for V11,
VS4507, Mitsubishi capacitors, etc.

For several years, our policy has been not to work on troubleshooting any
problem on V10, V11, or V12 chassis sets until all of the leaky caps and
damage to the boards is corrected. If you don't you will be wasting your
time. Mitsubishi had some bad batches of caps during that time from
Nichicon and other capacitor manufacturers and they have been failing
reliably :) in recent years.

Leonard

dopeeye@hotmail.com> wrote in message
news:9v3l119i27lp2bu2im819l7o46kskentcc@4ax.com...
Well well well
I guess I am a NOOB at this...
O well !
Thanks for caring enough though to post a reply, I though nobody
cares.

Here is a link to the pic

http://members.fortunecity.com/dopeeye/pics/TV1.JPG

Credo elvem etiam vivere





On Sunday, 20 Feb 2005 10:19:54 -500, "Asimov"
Asimov@-removethis-bbs.juxtaposition.dynip.com> wrote:

"dopeeye@hotmail.com" bravely wrote to "All" (20 Feb 05 04:34:33)
--- on the heady topic of "Re: Mitsubishi VS4507R Crppy Picture -
123_2391.JPG
(0/1) - 123_2391.JP"

do> From: dopeeye@hotmail.com
do> Xref: aeinews sci.electronics.repair:10961

do> =ybegin line=128 size=60684 name=123_2391.JPG

Dopeeye?! You're a complete twit! It's your posting that gave me a
crappy picture! How do you suppose an UNencoded jpg is going to get
through on an ASCII TEXT ONLY usergroup?! Huh? Huh? Huh!

A*s*i*m*o*v

... Sattinger's Law: It works better if you plug it in.
Click to expand...
 
jimcripps*gmail.com wrote:
:
: I've got a 2900-5206 at work, and have been wracking my brains trying
: to determine my next step. This is a repair job, and since we don't
: have one to swap out with, I figure because of the squealling, I would
: need to swap out the Flyback, if I really have to.

Funny that you expect everybody to know what a "2900-5206" is.

I suppose you know that, between vacuum-sealed CRTs and high-voltage
power supplies, there are numerous hazards in working on a monitor.
Some of the hazards are tricky. You would be wise to get help from
somebody who has experience doing this type of work.

But a commonly cited source of advice seems to be the following:

"Notes on the Troubleshooting and Repair of Computer and Video Monitors"

http://repairfaq.ece.drexel.edu/sam/monfaq.htm#monhpwsfm

I have not tried the described procedures myself, so I can't give much
more help than that. But be careful.

...RSS

--
Prevent bovine juvenile deliquency: adopt a cow today.
http://www.stonyfield.com/HaveACow/
 
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