Vertical Lines

D

DB

Guest
Have a Toshiba 30HF85 30" TV. There are vertical lines at the top of the
screen. I believe I need to replace the cap near the vertical hold IC.
Where is the vertical hold IC? Thanks.
 
"DB" <x@x.com> wrote in message
news:deadnRItKurh1rzRnZ2dnUVZ_rCdnZ2d@earthlink.com...
Have a Toshiba 30HF85 30" TV. There are vertical lines at the top of the
screen. I believe I need to replace the cap near the vertical hold IC.
Where is the vertical hold IC? Thanks.

Additional: What's the shape and how many pins? Thanks.
Click to expand...
 
"DB" <x@x.com> wrote in message
news:deadnRItKurh1rzRnZ2dnUVZ_rCdnZ2d@earthlink.com...
Have a Toshiba 30HF85 30" TV. There are vertical lines at the top of the
screen. I believe I need to replace the cap near the vertical hold IC.
Where is the vertical hold IC? Thanks.
Click to expand...
Mistake!! I have horizontal lines near top of screen!! Sorry.
 
On Jun 22, 5:08 pm, "DB" <x...@x.com> wrote:
"DB" <x...@x.com> wrote in message

news:deadnRItKurh1rzRnZ2dnUVZ_rCdnZ2d@earthlink.com...

Have a Toshiba 30HF85 30" TV.  There are vertical lines at the top of the
screen.  I believe I need to replace the cap near the vertical hold IC.
Where is the vertical hold IC?  Thanks.

Mistake!!  I have horizontal lines near top of screen!!  Sorry.
Click to expand...
If you can't find the vertical section, it's reasonable to assume you
can't find the dangerous EHT section either. I strongly recommend you
find someone to repair it for you.

G˛
 
"DB" <x@x.com> wrote in message
news:vLmdnX7vEcXgzbzRnZ2dnUVZ_qCdnZ2d@earthlink.com...
"DB" <x@x.com> wrote in message
news:deadnRItKurh1rzRnZ2dnUVZ_rCdnZ2d@earthlink.com...
Have a Toshiba 30HF85 30" TV. There are vertical lines at the top of the
screen. I believe I need to replace the cap near the vertical hold IC.
Where is the vertical hold IC? Thanks.


Mistake!! I have horizontal lines near top of screen!! Sorry.
Click to expand...
Listen guys. I have a 2 year degree in elect/electronics. I know all about
the high voltage. I've been inside many a crt's without getting fried. I
once fixed a crt monitor by replacing a dead cap. I appreciate the concern.

New development: I realized it's as if the picture size has been increased
vertically to where the image has returned at the top but upside down. Is
there an adjustment or do I need to replace a component? Thanks.
 
"DB" <x@x.com> wrote in message
news:vLmdnX7vEcXgzbzRnZ2dnUVZ_qCdnZ2d@earthlink.com...
"DB" <x@x.com> wrote in message
news:deadnRItKurh1rzRnZ2dnUVZ_rCdnZ2d@earthlink.com...
Have a Toshiba 30HF85 30" TV. There are vertical lines at the top of the
screen. I believe I need to replace the cap near the vertical hold IC.
Where is the vertical hold IC? Thanks.


Mistake!! I have horizontal lines near top of screen!! Sorry.
Click to expand...

I believe it's called vertical fold over. I most likely need to replace a
bad cap near the vertical hold IC.
Which takes me back to my original question: Where is the vertical hold IC?
What's the shape and how many pins? Thanks.
 
"Meat Plow" <mhywatt@yahoo.com> wrote in message
news:pan.2010.06.23.14.32.45@gmail.com...
On Wed, 23 Jun 2010 10:18:24 -0400, DB ??o??:


"DB" <x@x.com> wrote in message
news:vLmdnX7vEcXgzbzRnZ2dnUVZ_qCdnZ2d@earthlink.com...

"DB" <x@x.com> wrote in message
news:deadnRItKurh1rzRnZ2dnUVZ_rCdnZ2d@earthlink.com...
Have a Toshiba 30HF85 30" TV. There are vertical lines at the top of
the screen. I believe I need to replace the cap near the vertical
hold IC. Where is the vertical hold IC? Thanks.


Mistake!! I have horizontal lines near top of screen!! Sorry.


Listen guys. I have a 2 year degree in elect/electronics.

I have a 35 year degree in experience on the job. The structure of your
questions are a dead giveaway (no pun intended) that you should not be
inside the back of a set relying on your associates degree to protect you.
That is unless you wrap it around your hand as an insulator.
Click to expand...
I've already been in there. You're not responsible. Which IC is it?
Thanks.
 
DB wrote:


Which takes me back to my original question: Where is the vertical hold
IC?
What's the shape and how many pins? Thanks.
Click to expand...

There are two coils on the back of the CRT. The horizontal is connected to
the horizontal output transformer (which is also the high voltage
transformer, I'm sure you recognize it).

Now just track the connection to the other coil. This comes from the
vertical output stage, which is driven by the vertical sync circuit.

If your picture is stable besides of the wrong size, its probably not the
vertical IC at fault, but the power amplifier after it, or the power
supply.

If there are only a few lines, and they are crossing the picture diagonally,
then it's the beam which is not blanked during the vertical flyback. This
can be caused by a worn out picture tube, or by the grid bias voltages. I
don't know about your TV, but usually there are some potentiometers for
adjusting the grid voltages and slightly changing it makes the lines
diasppear. That's what it lools like:

http://bs.cyty.com/menschen/e-etzold/archiv/TV/uvb/img/MC47_ohneUVB.jpg

Is yours similar to that?

Stefan
 
On Tue, 22 Jun 2010 20:08:53 -0400, DB ǝʇoɹʍ:

"DB" <x@x.com> wrote in message
news:deadnRItKurh1rzRnZ2dnUVZ_rCdnZ2d@earthlink.com...
Have a Toshiba 30HF85 30" TV. There are vertical lines at the top of
the screen. I believe I need to replace the cap near the vertical hold
IC. Where is the vertical hold IC? Thanks.


Mistake!! I have horizontal lines near top of screen!! Sorry.
Click to expand...
Take it to a repair shop before you hurt yourself or worse.
 
"Stefan Heimers" <stefan.usenet@heimers.ch> wrote in message
news:hvt8ke$rqb$1@news.albasani.net...
DB wrote:


Which takes me back to my original question: Where is the vertical hold
IC?
What's the shape and how many pins? Thanks.


There are two coils on the back of the CRT. The horizontal is connected to
the horizontal output transformer (which is also the high voltage
transformer, I'm sure you recognize it).

Now just track the connection to the other coil. This comes from the
vertical output stage, which is driven by the vertical sync circuit.

If your picture is stable besides of the wrong size, its probably not the
vertical IC at fault, but the power amplifier after it, or the power
supply.

If there are only a few lines, and they are crossing the picture
diagonally,
then it's the beam which is not blanked during the vertical flyback. This
can be caused by a worn out picture tube, or by the grid bias voltages. I
don't know about your TV, but usually there are some potentiometers for
adjusting the grid voltages and slightly changing it makes the lines
diasppear. That's what it lools like:

http://bs.cyty.com/menschen/e-etzold/archiv/TV/uvb/img/MC47_ohneUVB.jpg

Is yours similar to that?

Stefan
Click to expand...
Thanks. Finally some useful info. The symptoms look more like when the
picture is adjusted to large and it folds back, to where you can see and
image in the lines, but upside down. Only about 1" at the top.
 
On Wed, 23 Jun 2010 10:18:24 -0400, DB ǝʇoɹʍ:


"DB" <x@x.com> wrote in message
news:vLmdnX7vEcXgzbzRnZ2dnUVZ_qCdnZ2d@earthlink.com...

"DB" <x@x.com> wrote in message
news:deadnRItKurh1rzRnZ2dnUVZ_rCdnZ2d@earthlink.com...
Have a Toshiba 30HF85 30" TV. There are vertical lines at the top of
the screen. I believe I need to replace the cap near the vertical
hold IC. Where is the vertical hold IC? Thanks.


Mistake!! I have horizontal lines near top of screen!! Sorry.


Listen guys. I have a 2 year degree in elect/electronics.
Click to expand...
I have a 35 year degree in experience on the job. The structure of your
questions are a dead giveaway (no pun intended) that you should not be
inside the back of a set relying on your associates degree to protect you.
That is unless you wrap it around your hand as an insulator.
 
On Jun 23, 7:44 am, "DB" <x...@x.com> wrote:
"Meat Plow" <mhyw...@yahoo.com> wrote in message

news:pan.2010.06.23.14.32.45@gmail.com...





On Wed, 23 Jun 2010 10:18:24 -0400, DB ??o??:

"DB" <x...@x.com> wrote in message
news:vLmdnX7vEcXgzbzRnZ2dnUVZ_qCdnZ2d@earthlink.com...

"DB" <x...@x.com> wrote in message
news:deadnRItKurh1rzRnZ2dnUVZ_rCdnZ2d@earthlink.com...
Have a Toshiba 30HF85 30" TV.  There are vertical lines at the top of
the screen.  I believe I need to replace the cap near the vertical
hold IC. Where is the vertical hold IC?  Thanks.

Mistake!!  I have horizontal lines near top of screen!!  Sorry.

Listen guys.  I have a 2 year degree in elect/electronics.

I have a 35 year degree in experience on the job. The structure of your
questions are a dead giveaway (no pun intended) that you should not be
inside the back of a set relying on your associates degree to protect you.
That is unless you wrap it around your hand as an insulator.

I've already been in there.  You're not responsible.  Which IC is
it?
Thanks.
Click to expand...
Then buy the service manual.

G˛
 
DB wrote:
"Meat Plow" <mhywatt@yahoo.com> wrote in message
news:pan.2010.06.23.14.32.45@gmail.com...
On Wed, 23 Jun 2010 10:18:24 -0400, DB ??o??:


"DB" <x@x.com> wrote in message
news:vLmdnX7vEcXgzbzRnZ2dnUVZ_qCdnZ2d@earthlink.com...

"DB" <x@x.com> wrote in message
news:deadnRItKurh1rzRnZ2dnUVZ_rCdnZ2d@earthlink.com...
Have a Toshiba 30HF85 30" TV. There are vertical lines at the top of
the screen. I believe I need to replace the cap near the vertical
hold IC. Where is the vertical hold IC? Thanks.


Mistake!! I have horizontal lines near top of screen!! Sorry.


Listen guys. I have a 2 year degree in elect/electronics.

I have a 35 year degree in experience on the job. The structure of your
questions are a dead giveaway (no pun intended) that you should not be
inside the back of a set relying on your associates degree to protect you.
That is unless you wrap it around your hand as an insulator.

I've already been in there. You're not responsible. Which IC is it?
Click to expand...

How do you know it's a bad IC?



--
Anyone wanting to run for any political office in the US should have to
have a DD214, and a honorable discharge.
 
DB wrote:
"DB" <x@x.com> wrote in message
news:vLmdnX7vEcXgzbzRnZ2dnUVZ_qCdnZ2d@earthlink.com...

"DB" <x@x.com> wrote in message
news:deadnRItKurh1rzRnZ2dnUVZ_rCdnZ2d@earthlink.com...
Have a Toshiba 30HF85 30" TV. There are vertical lines at the top of the
screen. I believe I need to replace the cap near the vertical hold IC.
Where is the vertical hold IC? Thanks.


Mistake!! I have horizontal lines near top of screen!! Sorry.


I believe it's called vertical fold over. I most likely need to replace a
bad cap near the vertical hold IC.
Which takes me back to my original question: Where is the vertical hold IC?
What's the shape and how many pins? Thanks.
Click to expand...

Vertical hold? That went away, decades ago.


--
Anyone wanting to run for any political office in the US should have to
have a DD214, and a honorable discharge.
 
"Michael A. Terrell" <mike.terrell@earthlink.net> wrote in message
news:BOudneYKtKqO17_RnZ2dnUVZ_gSdnZ2d@earthlink.com...
DB wrote:

"DB" <x@x.com> wrote in message
news:vLmdnX7vEcXgzbzRnZ2dnUVZ_qCdnZ2d@earthlink.com...

"DB" <x@x.com> wrote in message
news:deadnRItKurh1rzRnZ2dnUVZ_rCdnZ2d@earthlink.com...
Have a Toshiba 30HF85 30" TV. There are vertical lines at the top of
the
screen. I believe I need to replace the cap near the vertical hold
IC.
Where is the vertical hold IC? Thanks.


Mistake!! I have horizontal lines near top of screen!! Sorry.


I believe it's called vertical fold over. I most likely need to replace
a
bad cap near the vertical hold IC.
Which takes me back to my original question: Where is the vertical hold
IC?
What's the shape and how many pins? Thanks.


Vertical hold? That went away, decades ago.


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

That's ok, Michael. Stefan knows what I'm talking about, and he's knows
what he's talking about too.
 
On Wed, 23 Jun 2010 10:44:36 -0400, DB ǝʇoɹʍ:

"Meat Plow" <mhywatt@yahoo.com> wrote in message
news:pan.2010.06.23.14.32.45@gmail.com...
On Wed, 23 Jun 2010 10:18:24 -0400, DB ??o??:


"DB" <x@x.com> wrote in message
news:vLmdnX7vEcXgzbzRnZ2dnUVZ_qCdnZ2d@earthlink.com...

"DB" <x@x.com> wrote in message
news:deadnRItKurh1rzRnZ2dnUVZ_rCdnZ2d@earthlink.com...
Have a Toshiba 30HF85 30" TV. There are vertical lines at the top
of the screen. I believe I need to replace the cap near the
vertical hold IC. Where is the vertical hold IC? Thanks.


Mistake!! I have horizontal lines near top of screen!! Sorry.


Listen guys. I have a 2 year degree in elect/electronics.

I have a 35 year degree in experience on the job. The structure of your
questions are a dead giveaway (no pun intended) that you should not be
inside the back of a set relying on your associates degree to protect
you. That is unless you wrap it around your hand as an insulator.

I've already been in there. You're not responsible. Which IC is it?
Thanks.
Click to expand...
If you have a pdf document source for the schematic I'll have a look and
let you know.
 
"Meat Plow" <mhywatt@yahoo.com> wrote in message
news:pan.2010.06.23.19.27.55@gmail.com...
On Wed, 23 Jun 2010 14:11:47 -0400, DB ??o??:

"Michael A. Terrell" <mike.terrell@earthlink.net> wrote in message
news:BOudneYKtKqO17_RnZ2dnUVZ_gSdnZ2d@earthlink.com...

DB wrote:

"DB" <x@x.com> wrote in message
news:vLmdnX7vEcXgzbzRnZ2dnUVZ_qCdnZ2d@earthlink.com...

"DB" <x@x.com> wrote in message
news:deadnRItKurh1rzRnZ2dnUVZ_rCdnZ2d@earthlink.com...
Have a Toshiba 30HF85 30" TV. There are vertical lines at the top
of the
screen. I believe I need to replace the cap near the vertical hold
IC.
Where is the vertical hold IC? Thanks.


Mistake!! I have horizontal lines near top of screen!! Sorry.


I believe it's called vertical fold over. I most likely need to
replace a
bad cap near the vertical hold IC.
Which takes me back to my original question: Where is the vertical
hold IC?
What's the shape and how many pins? Thanks.


Vertical hold? That went away, decades ago.


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


That's ok, Michael. Stefan knows what I'm talking about, and he's knows
what he's talking about too.

It's near the big thing with blue and yellow wires. That is on the side
of a thing that looks like a little green round thing but should be black
but if not maybe green also. Trace that thing over by the other thing and
you might see a thing that matches it. If so look to the left of that
thing and underneath another thing. Let me know how it works out for you.
Click to expand...
Are you serious?
 
DB wrote:
That's ok, Michael. Stefan knows what I'm talking about, and he's knows
what he's talking about too.
It's near the big thing with blue and yellow wires. That is on the side
of a thing that looks like a little green round thing but should be black
but if not maybe green also. Trace that thing over by the other thing and
you might see a thing that matches it. If so look to the left of that
thing and underneath another thing. Let me know how it works out for you.

Are you serious?
Click to expand...
Brutally honest is the word that came to my mind. ;-)

Jeff


--
“Egotism is the anesthetic that dulls the pain of stupidity.”
Frank Leahy, Head coach, Notre Dame 1941-1954

http://www.stay-connect.com
 
On Wed, 23 Jun 2010 14:11:47 -0400, DB ǝʇoɹʍ:

"Michael A. Terrell" <mike.terrell@earthlink.net> wrote in message
news:BOudneYKtKqO17_RnZ2dnUVZ_gSdnZ2d@earthlink.com...

DB wrote:

"DB" <x@x.com> wrote in message
news:vLmdnX7vEcXgzbzRnZ2dnUVZ_qCdnZ2d@earthlink.com...

"DB" <x@x.com> wrote in message
news:deadnRItKurh1rzRnZ2dnUVZ_rCdnZ2d@earthlink.com...
Have a Toshiba 30HF85 30" TV. There are vertical lines at the top
of the
screen. I believe I need to replace the cap near the vertical hold
IC.
Where is the vertical hold IC? Thanks.


Mistake!! I have horizontal lines near top of screen!! Sorry.


I believe it's called vertical fold over. I most likely need to
replace a
bad cap near the vertical hold IC.
Which takes me back to my original question: Where is the vertical
hold IC?
What's the shape and how many pins? Thanks.


Vertical hold? That went away, decades ago.


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


That's ok, Michael. Stefan knows what I'm talking about, and he's knows
what he's talking about too.
Click to expand...
It's near the big thing with blue and yellow wires. That is on the side
of a thing that looks like a little green round thing but should be black
but if not maybe green also. Trace that thing over by the other thing and
you might see a thing that matches it. If so look to the left of that
thing and underneath another thing. Let me know how it works out for you.
 
On Wed, 23 Jun 2010 16:12:35 -0400, DB ǝʇoɹʍ:

"Meat Plow" <mhywatt@yahoo.com> wrote in message
news:pan.2010.06.23.19.27.55@gmail.com...
On Wed, 23 Jun 2010 14:11:47 -0400, DB ??o??:

"Michael A. Terrell" <mike.terrell@earthlink.net> wrote in message
news:BOudneYKtKqO17_RnZ2dnUVZ_gSdnZ2d@earthlink.com...

DB wrote:

"DB" <x@x.com> wrote in message
news:vLmdnX7vEcXgzbzRnZ2dnUVZ_qCdnZ2d@earthlink.com...

"DB" <x@x.com> wrote in message
news:deadnRItKurh1rzRnZ2dnUVZ_rCdnZ2d@earthlink.com...
Have a Toshiba 30HF85 30" TV. There are vertical lines at the
top of the
screen. I believe I need to replace the cap near the vertical
hold IC.
Where is the vertical hold IC? Thanks.


Mistake!! I have horizontal lines near top of screen!! Sorry.


I believe it's called vertical fold over. I most likely need to
replace a
bad cap near the vertical hold IC.
Which takes me back to my original question: Where is the vertical
hold IC?
What's the shape and how many pins? Thanks.


Vertical hold? That went away, decades ago.


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


That's ok, Michael. Stefan knows what I'm talking about, and he's
knows what he's talking about too.

It's near the big thing with blue and yellow wires. That is on the side
of a thing that looks like a little green round thing but should be
black but if not maybe green also. Trace that thing over by the other
thing and you might see a thing that matches it. If so look to the left
of that thing and underneath another thing. Let me know how it works
out for you.

Are you serious?
Click to expand...
Hell yes!
 
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