I replaced the flyback tranformer on my 32" JVC, now I can's seem to
get the sides and the center focused at the same time. I can get one or
the other. Is there a trick to this??

Thanks
Chad

Model is ????
Flyback is Generic or ?
Tell us more.

kip
wrote in message
oups.com...
I replaced the flyback tranformer on my 32" JVC, now I can's seem to
get the sides and the center focused at the same time. I can get one or
the other. Is there a trick to this??

Thanks
Chad

It is model AV-32F703. I am not sure if the tranformer I bought is
generic or not, here is a link to the part I bought.
http://www.partstore.com/ProductDeta...uctType= PART


Thanks
Chad

Was it the QQH number or the other number. ?
QQH is the real thing ...
kip
wrote in message
ps.com...
It is model AV-32F703. I am not sure if the tranformer I bought is
generic or not, here is a link to the part I bought.
http://www.partstore.com/ProductDeta...uctType= PART


Thanks
Chad

QQH0125-001.

On 19 Jul 2005 09:52:35 -0700, wrote:

I replaced the flyback tranformer on my 32" JVC, now I can's seem to
get the sides and the center focused at the same time. I can get one or
the other. Is there a trick to this??

Thanks
Chad

Are there two focus controls? If so, one of the will affect the sides
more than the other. It's also possible that the old flyback damaged
the dynamic focus circuit when it failed.
Andy Cuffe

-- Use this address until 12/31/2005

-- Use this address after 12/31/2005

There are 2 focus knobs.

2 Focus knobs and a Screen control for a 32inch ???

kip
wrote in message
oups.com...
There are 2 focus knobs.

Yes, 2 focus and a screen adjust on the FB trans

On Tue, 19 Jul 2005 16:43:43 -0400, "kip" wrote:

2 Focus knobs and a Screen control for a 32inch ???

kip

Apprently you have missed rare few old RCA TVs that had 2 H & V focus
pots along with one screen. Even RCA does sell newer TVs with this
but it is often found in high end type.

JVC using them, Samsung does. Not just in monitors. Gives best
overall focus. Some do have dynamic focus circuits as well which
actively corrects for the focus error.

Cheers, Wizard

So what should I try to fix this issue?

Yes I have seen a few of the older RCA,s with that added focus block (2
Focus)
and even Mits and like you say high end sets but to date I have not seen
a JVC 32 with it.
Just making sure he has the 2 Focus Pots and Screen as well...

kip

"Jason D." wrote in message
...
On Tue, 19 Jul 2005 16:43:43 -0400, "kip" wrote:

2 Focus knobs and a Screen control for a 32inch ???

kip

Apprently you have missed rare few old RCA TVs that had 2 H & V focus
pots along with one screen. Even RCA does sell newer TVs with this
but it is often found in high end type.

JVC using them, Samsung does. Not just in monitors. Gives best
overall focus. Some do have dynamic focus circuits as well which
actively corrects for the focus error.

Cheers, Wizard

In article .com,
says...
I replaced the flyback tranformer on my 32" JVC, now I can's seem to
get the sides and the center focused at the same time. I can get one or
the other. Is there a trick to this??

Dynamic focus? (that extra ring of wire you thought didn't do
anything and its associated circuitry)

The white wire, I soldered that back in place!?

On 19 Jul 2005 14:58:00 -0700, wrote:

So what should I try to fix this issue?


I'm sure there is an official procedure, but this always works for me.

First, figure out which control is which. One will appear affect the
overall focus. This is the vertical focus control.

The other will mostly affect the width of vertical lines and has the
most effect at the left and right edges of the screen. This is the
horizontal focus.

Start with both controls near the middle of their range. You need to
display something with sharp vertical lines at the edges and sharp
horizontal lines in the center (a cross hatch is best).

First, adjust the horizontal focus for the sharpest vertical lines at
the edges. Ignore the thickness of the scan lines for now, just make
the vertical lines are as thin as possible.

Next, adjust the vertical focus for the thinnest horizontal scan lines
in the dead center of the screen. Alternate between the two several
times because they interact with each other heavily.

If you don't have any way to display a cross hatch, you can use a
computer if it has a TV output, or even the on screen menus of a VCR.
Andy Cuffe

-- Use this address until 12/31/2005

-- Use this address after 12/31/2005

The old Zeniths with dual focus had a procedure of putting a crosshatch
pattern on the screen, adjust one focus for the thinnest vertical ine,
the other for the thinnest horiz line. This works for me on all dual
focus sets. Once you have a crosshatch pattern on the screen it is easy
to see which control effects horiz and which effects vertical. From
there you have to go back and forth between the two a few times to
eventually get both at optimum. I don't like um, but part of the
business.

Here is another thing, the tranformer has a black and red wire coming
off it that connects to the board off the CRT, it is labled A and B - I
did not see how those came off. I put them back as Black -A and Red B,
would this effect anything?

Oh Boy !!!
wrote in message
ups.com...
Here is another thing, the tranformer has a black and red wire coming
off it that connects to the board off the CRT, it is labled A and B - I
did not see how those came off. I put them back as Black -A and Red B,
would this effect anything?

Duh ! Obviously... yes.
--
Best Regards,
Daniel Sofie
Electronics Supply & Repair
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


wrote in message
ups.com...
Here is another thing, the tranformer has a black and red wire coming
off it that connects to the board off the CRT, it is labled A and B - I
did not see how those came off. I put them back as Black -A and Red B,
would this effect anything?

So does anyone know if the red is A and the Black is B, or just the
opposite?