Last night out of the blue my TV suddently changed from showing a normal
picture to just a Vertical bright line. It is located in the middle of the
screen. Is my understanding right that its the horisonal scan thats gone?

I have seen a few posts about replacing caps etc. The TV in question is an
Amstrad CTV 3128. Does anyone know where to get the circuit diagrams for
these TV's?

Cheers in advance

Rob

"Rob" wrote in message
...
Last night out of the blue my TV suddently changed from showing a normal
picture to just a Vertical bright line. It is located in the middle of the
screen. Is my understanding right that its the horisonal scan thats gone?

I have seen a few posts about replacing caps etc. The TV in question is an
Amstrad CTV 3128. Does anyone know where to get the circuit diagrams for
these TV's?

Cheers in advance

Rob


There are very few possibilities with these symptoms, the horizontal scan is
OK or there wouldn't be any EHT to produce the line but the yoke (coils
around the CRT neck that produce the horizontal deflection field) might be
open circuit or the connection to them might be suspect.
Pete

"RubbishRat" writes:

"Rob" wrote in message
...
Last night out of the blue my TV suddently changed from showing a normal
picture to just a Vertical bright line. It is located in the middle of the
screen. Is my understanding right that its the horisonal scan thats gone?

I have seen a few posts about replacing caps etc. The TV in question is an
Amstrad CTV 3128. Does anyone know where to get the circuit diagrams for
these TV's?

There are very few possibilities with these symptoms, the horizontal scan is
OK or there wouldn't be any EHT to produce the line but the yoke (coils
around the CRT neck that produce the horizontal deflection field) might be
open circuit or the connection to them might be suspect.
Pete

Most likely the connections at the yoke connector.

--- sam | Sci.Electronics.Repair FAQ Home Page: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Site Info: http://www.repairfaq.org/REPAIR/F_mirror.html

Important: The email address in this message header may no longer work. To
contact me, please use the feedback form on the S.E.R FAQ Web sites.

This is loss of vertical scan. Keep the set switched off until serviced.
This bright line can burn in to the CRT phosphors.

Most likely a connector came loose, there may be a cold solder connection,
and or some components have failed. The set should be properly checked.

--

Greetings,

Jerry Greenberg GLG Technologies GLG
=========================================
WebPage http://www.zoom-one.com
Electronics http://www.zoom-one.com/electron.htm
=========================================


"Rob" wrote in message
...
Last night out of the blue my TV suddently changed from showing a normal
picture to just a Vertical bright line. It is located in the middle of the
screen. Is my understanding right that its the horisonal scan thats gone?

I have seen a few posts about replacing caps etc. The TV in question is an
Amstrad CTV 3128. Does anyone know where to get the circuit diagrams for
these TV's?

Cheers in advance

Rob

"Jerry G." writes:

This is loss of vertical scan. Keep the set switched off until serviced.
This bright line can burn in to the CRT phosphors.

Most likely a connector came loose, there may be a cold solder connection,
and or some components have failed. The set should be properly checked.

Duh, loss of horizontal scan. Too much newsgroup posting?

As noted, probably a bad connection as there isn't much that can go
wrong resulting in a vertical line like this: | since high voltage is
generated by the horizontal deflection circuits. It's just not getting
to the horizotnal yoke coils.

If you really mean horizontal line like this: --- , ignore what I've
just said.

--- sam | Sci.Electronics.Repair FAQ Home Page: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Site Info: http://www.repairfaq.org/REPAIR/F_mirror.html

Important: The email address in this message header may no longer work. To
contact me, please use the feedback form on the S.E.R FAQ Web sites.



"Rob" wrote in message
...
Last night out of the blue my TV suddently changed from showing a normal
picture to just a Vertical bright line. It is located in the middle of the
screen. Is my understanding right that its the horisonal scan thats gone?

I have seen a few posts about replacing caps etc. The TV in question is an
Amstrad CTV 3128. Does anyone know where to get the circuit diagrams for
these TV's?

Cheers in advance

Rob

"Sam Goldwasser" wrote in message
...
"Jerry G." writes:

This is loss of vertical scan. Keep the set switched off until serviced.
This bright line can burn in to the CRT phosphors.

Most likely a connector came loose, there may be a cold solder
connection,
and or some components have failed. The set should be properly checked.

Duh, loss of horizontal scan. Too much newsgroup posting?

As noted, probably a bad connection as there isn't much that can go
wrong resulting in a vertical line like this: | since high voltage is
generated by the horizontal deflection circuits. It's just not getting
to the horizotnal yoke coils.

If you really mean horizontal line like this: --- , ignore what I've
just said.



He definitely said a vertical line, but I suppose a horizontal line is the
more likely.
Pete

Wat in tarnation wood u do without a TV ?
I wood rather eat som gud possem stew anyher .

"Rob" wrote in message
...
Last night out of the blue my TV suddently changed from showing a normal
picture to just a Vertical bright line. It is located in the middle of the
screen. Is my understanding right that its the horisonal scan thats gone?

I have seen a few posts about replacing caps etc. The TV in question is an
Amstrad CTV 3128. Does anyone know where to get the circuit diagrams for
these TV's?

Cheers in advance

Rob

Tim Kettring....
Please take your "dim wit" and phonically (mis)spelled words to a newsgroup
that might appreciate your humor.... on this newsgroup it is a complete
WASTE of our time and frankly damn annoying....
I suppose it was cute to some folks at first with your post last week about
noise in your radio but not so any more.
We all know you can spell correctly and you are much more intelligent that
you want people to think with this kind of posting..... you made a
properly spelled and intelligent reply to one of my reply posts to you last
week so we know you are not stupid...... so knowing that, please GO AWAY.
If you wish to post something that makes sense and you are asking for
assistance you will be rewarded with logical and helpful replies...... so
don't burn your bridges here.
--
Best Regards,
Daniel Sofie
Electronics Supply & Repair
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


"Tim Kettring" wrote in message
...
Wat in tarnation wood u do without a TV ?
I wood rather eat som gud possem stew anyher .

RubbishRat / Pete:

A good percentage of posts describing scan problems seem to get Horizontal
and Vertical lines mixed up.... I suppose it is because A horizontal line
means bad vertical deflection and a vertical line means bad horizontal
deflection.... so usually many of us on the newsgroup will go a little
further and describe a horizontal line that runs left to right across the
screen and a vertical line the runs from top to bottom down the screen.
I am certain that is why Jerry Greenberg responded with suggestions to
repair failing vertical deflection.

I have a sneaking hunch that the OP meant a Horizontal Line... meaning, of
course, problems with vertical deflection.... solder joints, bad chip, bad
capacitors, faulty flyback derived B+ to the chip, etc.

A loss of horizontal deflection resulting in a Vertical Line is almost
always a bad connection at the yoke connector (as Sam Goldwasser's reply
suggested) where it connects to the circuit board.... bad solder joints,
faulty connector, etc, and very rarely a bad yoke winding. He was able to
see a line on the screen so we know he had high voltage and the HOT and
flyback were working OK.
--
Best Regards,
Daniel Sofie
Electronics Supply & Repair
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


"RubbishRat" wrote in message
...

"Sam Goldwasser" wrote in message
...
"Jerry G." writes:

This is loss of vertical scan. Keep the set switched off until
serviced.
This bright line can burn in to the CRT phosphors.

Most likely a connector came loose, there may be a cold solder
connection,
and or some components have failed. The set should be properly
checked.

Duh, loss of horizontal scan. Too much newsgroup posting?

As noted, probably a bad connection as there isn't much that can go
wrong resulting in a vertical line like this: | since high voltage is
generated by the horizontal deflection circuits. It's just not getting
to the horizotnal yoke coils.

If you really mean horizontal line like this: --- , ignore what I've
just said.



He definitely said a vertical line, but I suppose a horizontal line is the
more likely.
Pete

Sofie , OK . I was just kidding , but will stop now :-)
Sorry if my hillbilly talk was too much .


"Sofie" wrote in message
...
Tim Kettring....
Please take your "dim wit" and phonically (mis)spelled words to a
newsgroup
that might appreciate your humor.... on this newsgroup it is a complete
WASTE of our time and frankly damn annoying....
I suppose it was cute to some folks at first with your post last week
about
noise in your radio but not so any more.
We all know you can spell correctly and you are much more intelligent that
you want people to think with this kind of posting..... you made a
properly spelled and intelligent reply to one of my reply posts to you
last
week so we know you are not stupid...... so knowing that, please GO AWAY.
If you wish to post something that makes sense and you are asking for
assistance you will be rewarded with logical and helpful replies...... so
don't burn your bridges here.
--
Best Regards,
Daniel Sofie
Electronics Supply & Repair
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


"Tim Kettring" wrote in message
...
Wat in tarnation wood u do without a TV ?
I wood rather eat som gud possem stew anyher .

Tim Kettring:
Thank you for your good attitude and your agreement to the cessation of your
"hillbilly talk" postings.... it is much appreciated.
You are welcome to stick around this newsgroup, post questions and
contribute if you can.
--
Best Regards,
Daniel Sofie
Electronics Supply & Repair
--------------------------


"Tim Kettring" wrote in message
...

Sofie , OK . I was just kidding , but will stop now :-)
Sorry if my hillbilly talk was too much .


"Sofie" wrote in message
...
Tim Kettring....
Please take your "dim wit" and phonically (mis)spelled words to a
newsgroup
that might appreciate your humor.... on this newsgroup it is a complete
WASTE of our time and frankly damn annoying....
I suppose it was cute to some folks at first with your post last week
about
noise in your radio but not so any more.
We all know you can spell correctly and you are much more intelligent
that
you want people to think with this kind of posting..... you made a
properly spelled and intelligent reply to one of my reply posts to you
last
week so we know you are not stupid...... so knowing that, please GO
AWAY.
If you wish to post something that makes sense and you are asking for
assistance you will be rewarded with logical and helpful replies......
so
don't burn your bridges here.
--
Best Regards,
Daniel Sofie
Electronics Supply & Repair
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


"Tim Kettring" wrote in message
...
Wat in tarnation wood u do without a TV ?
I wood rather eat som gud possem stew anyher .

OK , thanks Sofie :-)

"Sofie" wrote in message
...
Tim Kettring:
Thank you for your good attitude and your agreement to the cessation of
your
"hillbilly talk" postings.... it is much appreciated.
You are welcome to stick around this newsgroup, post questions and
contribute if you can.
--
Best Regards,
Daniel Sofie
Electronics Supply & Repair
--------------------------


"Tim Kettring" wrote in message
...

Sofie , OK . I was just kidding , but will stop now :-)
Sorry if my hillbilly talk was too much .


"Sofie" wrote in message
...
Tim Kettring....
Please take your "dim wit" and phonically (mis)spelled words to a
newsgroup
that might appreciate your humor.... on this newsgroup it is a
complete
WASTE of our time and frankly damn annoying....
I suppose it was cute to some folks at first with your post last week
about
noise in your radio but not so any more.
We all know you can spell correctly and you are much more intelligent
that
you want people to think with this kind of posting..... you made a
properly spelled and intelligent reply to one of my reply posts to you
last
week so we know you are not stupid...... so knowing that, please GO
AWAY.
If you wish to post something that makes sense and you are asking for
assistance you will be rewarded with logical and helpful replies......
so
don't burn your bridges here.
--
Best Regards,
Daniel Sofie
Electronics Supply & Repair

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


"Tim Kettring" wrote in message
...
Wat in tarnation wood u do without a TV ?
I wood rather eat som gud possem stew anyher .

"Jerry G." wrote in message
...
This is loss of vertical scan. Keep the set switched off until serviced.
This bright line can burn in to the CRT phosphors.

Most likely a connector came loose, there may be a cold solder connection,
and or some components have failed. The set should be properly checked.

--

A bright vertical line? That's loss of horizontal scan. First thing I'd
check is solder connections to the yoke and in that general area, a
schematic should not be nessesary for this repair.