Zenith SL2767W Full Vertical Collapse
 

Vertical output circuit and its associated b+.

"vze3bdmd" wrote in message
...

I have a Zenith SL2767W experiancing full vertical collapse. I've
checked all the usual suspects but everything seems normal. Any hints on
where and what to look for?

- Vince

Zenith SL2767W Full Vertical Collapse
 

Vertical output circuit and its associated b+.

"vze3bdmd" wrote in message
...

I have a Zenith SL2767W experiancing full vertical collapse. I've
checked all the usual suspects but everything seems normal. Any hints on
where and what to look for?

- Vince

Zenith SL2767W Full Vertical Collapse
 

Vince ...!
What did you check out..??

kip

Tell us more.



--
"Watch the return E-Mail addy its false"
"vze3bdmd" wrote in message
...

I have a Zenith SL2767W experiancing full vertical collapse. I've
checked all the usual suspects but everything seems normal. Any hints on
where and what to look for?

- Vince

Zenith SL2767W Full Vertical Collapse
 

Does it have its b+ scan derived voltage?
What about the yoke and the yoke return connections and capacitor?


"vze3bdmd" wrote in message
...

The Vertical IC appears to be good. I touched up the solder joints just
to be sure also checked values of nearby components but everything
appears to check out. I think I'm missing something.

- Vince

In article ,
"David" wrote:

Vertical output circuit and its associated b+.

"vze3bdmd" wrote in message
...

I have a Zenith SL2767W experiancing full vertical collapse. I've
checked all the usual suspects but everything seems normal. Any hints
on
where and what to look for?

- Vince

Zenith SL2767W Full Vertical Collapse
 

Does it have its b+ scan derived voltage?
What about the yoke and the yoke return connections and capacitor?


"vze3bdmd" wrote in message
...

The Vertical IC appears to be good. I touched up the solder joints just
to be sure also checked values of nearby components but everything
appears to check out. I think I'm missing something.

- Vince

In article ,
"David" wrote:

Vertical output circuit and its associated b+.

"vze3bdmd" wrote in message
...

I have a Zenith SL2767W experiancing full vertical collapse. I've
checked all the usual suspects but everything seems normal. Any hints
on
where and what to look for?

- Vince

Zenith SL2767W Full Vertical Collapse
 

9 times out of 10 if resoldering the ringed solder connections doesn't
give you a full picture then the vertical output chip is bad. With
Zeniths usually all you need to do is replace the VOUT chip (it doesn't
cost much) and that will do the trick. To the naked eye the vertical IC
may appear to be good but could be bad internally. It could also be a
case of the VOUT not getting the proper Vcc but you'd need a schematic
to look up the voltages. WHat is the number on the VOUT chip?
Mark

"The Vertical IC appears to be good. I touched up the solder joints just
to be sure also checked values of nearby components but everything
appears to check out. I think I'm missing something.
- Vince"

Zenith SL2767W Full Vertical Collapse
 

9 times out of 10 if resoldering the ringed solder connections doesn't
give you a full picture then the vertical output chip is bad. With
Zeniths usually all you need to do is replace the VOUT chip (it doesn't
cost much) and that will do the trick. To the naked eye the vertical IC
may appear to be good but could be bad internally. It could also be a
case of the VOUT not getting the proper Vcc but you'd need a schematic
to look up the voltages. WHat is the number on the VOUT chip?
Mark

"The Vertical IC appears to be good. I touched up the solder joints just
to be sure also checked values of nearby components but everything
appears to check out. I think I'm missing something.
- Vince"

Zenith SL2767W Full Vertical Collapse
 

Check Rx4232 1 Ohm Resistor , If it's open , then the IC is bad.


--
==========================
Jeff Stielau
Shoreline Electronics Repair
344 East Main Street
Clinton,CT 06413
860-399-1861
860-664-3535 (fax)

========================
"If you push something hard enough it will fall over."
Fudd's First Law of Opposition - Sir Sidney Fudd


"vze3bdmd" wrote in message
...

I have a Zenith SL2767W experiancing full vertical collapse. I've
checked all the usual suspects but everything seems normal. Any hints on
where and what to look for?

- Vince

Zenith SL2767W Full Vertical Collapse
 

Check Rx4232 1 Ohm Resistor , If it's open , then the IC is bad.


--
==========================
Jeff Stielau
Shoreline Electronics Repair
344 East Main Street
Clinton,CT 06413
860-399-1861
860-664-3535 (fax)

========================
"If you push something hard enough it will fall over."
Fudd's First Law of Opposition - Sir Sidney Fudd


"vze3bdmd" wrote in message
...

I have a Zenith SL2767W experiancing full vertical collapse. I've
checked all the usual suspects but everything seems normal. Any hints on
where and what to look for?

- Vince

Zenith SL2767W Full Vertical Collapse
 

*) Make sure the vertical section of the yoke has not opened. You can do
this easily with an ohmmeter.

*) I recently fixed a TV with the same problem. It turned out to be caused
by several things: bad solder joints on the vertical deflection chip, an
open resistor between the Vcc line on that chip and its power source (the
flyback and a diode).

Zenith SL2767W Full Vertical Collapse
 

*) Make sure the vertical section of the yoke has not opened. You can do
this easily with an ohmmeter.

*) I recently fixed a TV with the same problem. It turned out to be caused
by several things: bad solder joints on the vertical deflection chip, an
open resistor between the Vcc line on that chip and its power source (the
flyback and a diode).

Zenith SL2767W Full Vertical Collapse
 

Its about 1 inch from the vertical out IC..
kip

--
"Watch the return E-Mail addy its false"
"vze3bdmd" wrote in message
...
In article ,
"Shoreline Electronics" wrote:

Check Rx4232 1 Ohm Resistor , If it's open , then the IC is bad.

Rx4232? Any help on where that might be located on the board? The
closest things I can find are in the 41xx. Nothing at all is 42xx. There
is an Rx3232 though, but that checks out OK.

- Vince

Zenith SL2767W Full Vertical Collapse
 

Its about 1 inch from the vertical out IC..
kip

--
"Watch the return E-Mail addy its false"
"vze3bdmd" wrote in message
...
In article ,
"Shoreline Electronics" wrote:

Check Rx4232 1 Ohm Resistor , If it's open , then the IC is bad.

Rx4232? Any help on where that might be located on the board? The
closest things I can find are in the 41xx. Nothing at all is 42xx. There
is an Rx3232 though, but that checks out OK.

- Vince

Zenith SL2767W Full Vertical Collapse
 

Ok...maybe a typo.

I believe it is 3242.


--
==========================
Jeff Stielau
Shoreline Electronics Repair
344 East Main Street
Clinton,CT 06413
860-399-1861
860-664-3535 (fax)

========================
"If you push something hard enough it will fall over."
Fudd's First Law of Opposition - Sir Sidney Fudd


"vze3bdmd" wrote in message
...
In article ,
"Shoreline Electronics" wrote:

Check Rx4232 1 Ohm Resistor , If it's open , then the IC is bad.

Rx4232? Any help on where that might be located on the board? The
closest things I can find are in the 41xx. Nothing at all is 42xx. There
is an Rx3232 though, but that checks out OK.

- Vince

Zenith SL2767W Full Vertical Collapse
 

Ok...maybe a typo.

I believe it is 3242.


--
==========================
Jeff Stielau
Shoreline Electronics Repair
344 East Main Street
Clinton,CT 06413
860-399-1861
860-664-3535 (fax)

========================
"If you push something hard enough it will fall over."
Fudd's First Law of Opposition - Sir Sidney Fudd


"vze3bdmd" wrote in message
...
In article ,
"Shoreline Electronics" wrote:

Check Rx4232 1 Ohm Resistor , If it's open , then the IC is bad.

Rx4232? Any help on where that might be located on the board? The
closest things I can find are in the 41xx. Nothing at all is 42xx. There
is an Rx3232 though, but that checks out OK.

- Vince