[TechAssist] Re: SONY KV-32FS13 pincushion (Chassis BA5)
- From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 5 Nov 2004 13:34:36 -0500
See if this is any help:
Subject
Severe pincushion problem with horizontal compression on left side
SYMPTOMS
Unit has what looks like severe pincushion problem with horizontal
compression on left side of screen. Pin amp adjustments have very little
effect.
CAUSE
Unit has what looks like severe pincushion problem with horizontal
compression on left side of screen. Pin amp adjustments have very little
effect. e parabola signal normal at pin 2 of IC501 and varies in amplitude
with adjustment normally. R513 or R551 will overheat depending on position
of horizontal centering switches. Found both L503 and L504 shorted. part
number 140667711 for both. replacing these restored normal operation. found
several cases of this problem and it may well affect other BA-5 and
possibly BA-4 chassis with this circuitry.
RESOLUTION
Parabola signal normal at IC501/pin 2 and varies in amplitude with
adjustment normally.
R513 or R551 will overheat depending on position of horizontal centering
switches.
Found both L503 and L506 shorted. Replacing these restored normal
operation.
Found several cases of this problem and it may well affect other BA-5 and
possibly BA-4 chassis
with this circuitry.
The nominal resistance of the good 10 mh coil is about 15.3 ohms on the
Fluke 83.
The bad ones read between1.5 and 1.9 ohms with the Fluke 83 meter.
Bob Waterman, CET® #RI-28
Master Technician License #9109
Service Manager / Parts Manager
Gemini Computer, TV, & Security Alarms
(508)695-7302
(508)695-7769 FAX
geminitv@xxxxxxxxxxx
----- Original Message -----
From: "Shaun" <satguy@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, November 05, 2004 10:02 AM
Subject: [TechAssist] Re: SONY KV-32FS13 pincushion (Chassis BA5)
> It's a PDF on a cd I found. It has 76 pages and looks to be a complete
> diagram, just doesn't have allot of voltages listed. I really am getting
> close though with Q504 (pin amp) and it's collector supposed to be -6.5
> volts and right now it is +12 volts, but I can't seem to figure out why.
>
> Shaun
> Advanced Electronics
> Fort Morgan, CO 80701
>
> satguy@xxxxxxxxxxxxx
> ----- Original Message -----
> From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Friday, November 05, 2004 6:25 AM
> Subject: [TechAssist] Re: SONY KV-32FS13 pincushion (Chassis BA5)
>
>
> > What do you have for a schematic now? Is it a PDF of the original Sony?
> >
> > Bob Waterman, CET® #RI-28
> > Master Technician License #9109
> > Service Manager / Parts Manager
> > Gemini Computer, TV, & Security Alarms
> > (508)695-7302
> > (508)695-7769 FAX
> > geminitv@xxxxxxxxxxx
> >
> >
> >
> > ----- Original Message -----
> > From: "Shaun" <satguy@xxxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Thursday, November 04, 2004 7:53 PM
> > Subject: [TechAssist] Re: SONY KV-32FS13 pincushion (Chassis BA5)
> >
> >
> > > Ok, finally got the schematic for this beast. I found that on Q504
> > > (pincushion drive) C is (+12.3 volts), B is (0.3) volts and E is (0.0
> > > volts). The schematic says voltages should be: C (-6.5 volts) B (0.1
> > volts)
> > > and E (0.0 volts). There are not really any voltages marked on the
> > schematic
> > > so I am not sure what makes the voltage go back to -6.5 on the
> collector.
> > > Does anyone else have a better schematic on this unit?
> > >
> > > Shaun
> > >
> > > Advanced Electronics
> > > 224 West Riverview Ave.
> > > Fort Morgan, CO 80701
> > > ----- Original Message -----
> > > From: "Shaun" <satguy@xxxxxxxxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Thursday, November 04, 2004 3:21 PM
> > > Subject: [TechAssist] Re: SONY KV-32FS13 pincushion (Chassis BA5)
> > >
> > >
> > > > I am still fighting this Sony with a pincushion problem. I just
> replaced
> > > the
> > > > Q504 (KTC4370A) original sony pincushion transistor and no change.
The
> > > > picture is too wide and hour glass looking on the side.
> > > > In the other posts on this unit I have replaced several other parts
to
> > no
> > > > help.
> > > >
> > > > Shaun
> > > >
> > > > Advanced Electronics
> > > > 224 West Riverview Ave.
> > > > Fort Morgan, CO 80701
> > > > ----- Original Message -----
> > > > From: "Shaun" <satguy@xxxxxxxxxxxxx>
> > > > To: <techassist@xxxxxxxxxxxxx>
> > > > Sent: Tuesday, October 19, 2004 11:06 AM
> > > > Subject: [TechAssist] Re: SONY KV-32FS13 pincushion (Chassis BA5)
> > > >
> > > >
> > > > > Last attempt, are there any Sony ASC's out there?
> > > > >
> > > > > Shaun
> > > > >
> > > > > Advanced Electronics
> > > > > 224 West Riverview Ave.
> > > > > Fort Morgan, CO 80701
> > > > > ----- Original Message -----
> > > > > From: "Shaun" <satguy@xxxxxxxxxxxxx>
> > > > > To: <techassist@xxxxxxxxxxxxx>
> > > > > Sent: Monday, October 18, 2004 3:52 PM
> > > > > Subject: [TechAssist] Re: SONY KV-32FS13 pincushion (Chassis BA5)
> > > > >
> > > > >
> > > > > > I have replaced L503 and L506 along with R513 and R551. I also
> > > replaced
> > > > > > IC301 and IC302 because of a little water damage. It fixed the
> > jumping
> > > > > > picture but the picture still looks like an hour glass. I got
all
> > the
> > > > > > service menu settings and made sure they are correct are there
any
> > > Sony
> > > > > ASC
> > > > > > that might know where to go from here.
> > > > > >
> > > > > > Shaun
> > > > > >
> > > > > > Advanced Electronics
> > > > > > 224 West Riverview Ave.
> > > > > > Fort Morgan, CO 80701
> > > > > > ----- Original Message -----
> > > > > > From: "Shaun" <satguy@xxxxxxxxxxxxx>
> > > > > > To: <techassist@xxxxxxxxxxxxx>
> > > > > > Sent: Monday, October 18, 2004 11:31 AM
> > > > > > Subject: [TechAssist] Re: SONY KV-32FS13 pincussion (Chassis
BA5)
> > > > > >
> > > > > >
> > > > > > > This set is nearly repaired but I still have a pincushion
> problem,
> > > it
> > > > > has
> > > > > > > the hour glass look pulled in on both sides. Any other ideas?
> > > > > > >
> > > > > > > Shaun
> > > > > > >
> > > > > > > Advanced Electronics
> > > > > > > 224 West Riverview Ave.
> > > > > > > Fort Morgan, CO 80701
> > > > > > > ----- Original Message -----
> > > > > > > From: "Shaun" <satguy@xxxxxxxxxxxxx>
> > > > > > > To: <techassist@xxxxxxxxxxxxx>
> > > > > > > Sent: Wednesday, August 18, 2004 3:41 PM
> > > > > > > Subject: [TechAssist] Re: SONY KV-32FS13 pincussion
> > > > > > >
> > > > > > >
> > > > > > > > Found the problem. It was IC 301 (CXA2154AS) when I removed
it
> > > after
> > > > > > > tracing
> > > > > > > > the signal problem back to that IC, I found liquid damage
> under
> > > the
> > > > > ic.
> > > > > > > >
> > > > > > > > Shaun
> > > > > > > >
> > > > > > > > Advanced Electronics
> > > > > > > > 224 West Riverview Ave.
> > > > > > > > Fort Morgan, CO 80701
> > > > > > > > ----- Original Message -----
> > > > > > > > From: "Shaun" <satguy@xxxxxxxxxxxxx>
> > > > > > > > To: <techassist@xxxxxxxxxxxxx>
> > > > > > > > Sent: Wednesday, August 18, 2004 1:49 PM
> > > > > > > > Subject: [TechAssist] Re: SONY KV-32FS13 pincussion
> > > > > > > >
> > > > > > > >
> > > > > > > > > Ok now I am looking at the screen and it is breathing (too
> > wide)
> > > > and
> > > > > > > > > bouncing with horz. tearing. I have tried to use freeze
mist
> > to
> > > > find
> > > > > > the
> > > > > > > > bad
> > > > > > > > > part to no avail. When it is first turned on it looks
better
> > but
> > > > > after
> > > > > > > on
> > > > > > > > > for about five minutes pincushion goes to hour glass
> looking
> > > and
> > > > > > screen
> > > > > > > > it
> > > > > > > > > way to wide but then bounces back to normal then right
back
> > out
> > > > > again.
> > > > > > > > This
> > > > > > > > > tv is driving me crazy please any info would be great.
> > > > > > > > >
> > > > > > > > > Shaun
> > > > > > > > >
> > > > > > > > > Advanced Electronics
> > > > > > > > > 224 West Riverview Ave.
> > > > > > > > > Fort Morgan, CO 80701
> > > > > > > > > ----- Original Message -----
> > > > > > > > > From: "Shaun" <satguy@xxxxxxxxxxxxx>
> > > > > > > > > To: <techassist@xxxxxxxxxxxxx>
> > > > > > > > > Sent: Wednesday, August 18, 2004 11:08 AM
> > > > > > > > > Subject: [TechAssist] Re: SONY KV-32FS13 pincussion
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > > I still have this set in the shop with bad pincushion. I
> > have
> > > > > > checked
> > > > > > > > L503
> > > > > > > > > > and L506 both are good along with everything in this
tip:
> > > > > > > > > >
> > > > > > > > > > RESOLUTION: Parabola signal normal at IC501/pin 2 and
> varies
> > > in
> > > > > > > > amplitude
> > > > > > > > > > with adjustment normally.
> > > > > > > > > > R513 or R551 will overheat depending on position of
> > horizontal
> > > > > > > centering
> > > > > > > > > > switches. Found both L503 and L506 shorted. Replacing
> these
> > > > > restored
> > > > > > > > > normal
> > > > > > > > > > operation. Found several cases of this problem and it
may
> > well
> > > > > > affect
> > > > > > > > > other
> > > > > > > > > > BA-5 and possibly BA-4 chassis
> > > > > > > > > > with this circuitry. The nominal resistance of the good
10
> > mh
> > > > coil
> > > > > > is
> > > > > > > > > about
> > > > > > > > > > 15.3 ohms on the Fluke 83. The bad ones read between1.5
> and
> > > 1.9
> > > > > > ohms
> > > > > > > > with
> > > > > > > > > > the Fluke 83 meter.
> > > > > > > > > >
> > > > > > > > > > Is there someone that has the correct values for
> everything
> > in
> > > > the
> > > > > > > > service
> > > > > > > > > > menu on this set?
> > > > > > > > > >
> > > > > > > > > > Shaun
> > > > > > > > > >
> > > > > > > > > > Advanced Electronics
> > > > > > > > > > 224 West Riverview Ave.
> > > > > > > > > > Fort Morgan, CO 80701
> > > > > > > > > > ----- Original Message -----
> > > > > > > > > > From: "Shaun" <satguy@xxxxxxxxxxxxx>
> > > > > > > > > > To: "tech" <techassist@xxxxxxxxxxxxx>
> > > > > > > > > > Sent: Monday, March 22, 2004 3:57 PM
> > > > > > > > > > Subject: [TechAssist] SONY KV-32FS13 pincussion
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > > > > I have this Sony KV-32FS13 that is bowing in from the
> > sides
> > > it
> > > > > is
> > > > > > a
> > > > > > > > 2001
> > > > > > > > > > > model and I have no info on it. I have checked several
> > > things
> > > > on
> > > > > > it
> > > > > > > > but
> > > > > > > > > no
> > > > > > > > > > > luck so far without a schematic. Has anyone seen this
> > > > problem.
> > > > > > > > Customer
> > > > > > > > > > > said it flashes and went out then when he turned it
back
> > on
> > > it
> > > > > had
> > > > > > > > lost
> > > > > > > > > > > pincushion.
> > > > > > > > > > >
> > > > > > > > > > > Shaun
> > > > > > > > > > >
> > > > > > > > > > > Advanced Electronics
> > > > > > > > > > > 224 West Riverview Ave.
> > > > > > > > > > > Fort Morgan, CO 80701
> > > > > > > > > > >
> > > > > > > > > > >
> > > > > > > > > >
> > > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>
> --------------------------------------------------------------------------
> > > > > > > > > > ---
> > > > > > > > > > > Lost Password:
> > > > > > > > > > > http://www.tech-assist.org and select "Login
> Problems?".
> > > > > > > > > > > Email Archives:
> > > > > > > > > > > //www.freelists.org/archives/techassist/
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>
> --------------------------------------------------------------------------
> > > > > > > > > ---
> > > > > > > > > > Lost Password:
> > > > > > > > > > http://www.tech-assist.org and select "Login
Problems?".
> > > > > > > > > > Email Archives:
> > > > > > > > > > //www.freelists.org/archives/techassist/
> > > > > > > > >
> > > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>
> --------------------------------------------------------------------------
> > > > > > > > ---
> > > > > > > > > Lost Password:
> > > > > > > > > http://www.tech-assist.org and select "Login Problems?".
> > > > > > > > > Email Archives:
> > > > > > > > > //www.freelists.org/archives/techassist/
> > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>
> --------------------------------------------------------------------------
> > > > > > > ---
> > > > > > > > Lost Password:
> > > > > > > > http://www.tech-assist.org and select "Login Problems?".
> > > > > > > > Email Archives:
> > > > > > > > //www.freelists.org/archives/techassist/
> > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>
> --------------------------------------------------------------------------
> > > > > > ---
> > > > > > > Lost Password:
> > > > > > > http://www.tech-assist.org and select "Login Problems?".
> > > > > > > Email Archives:
> > > > > > > //www.freelists.org/archives/techassist/
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>
> --------------------------------------------------------------------------
> > > > > ---
> > > > > > Lost Password:
> > > > > > http://www.tech-assist.org and select "Login Problems?".
> > > > > > Email Archives:
> > > > > > //www.freelists.org/archives/techassist/
> > > > >
> > > > >
> > > >
> > >
> >
>
> --------------------------------------------------------------------------
> > > > ---
> > > > > Lost Password:
> > > > > http://www.tech-assist.org and select "Login Problems?".
> > > > > Email Archives:
> > > > > //www.freelists.org/archives/techassist/
> > > >
> > > >
> > >
> >
>
> --------------------------------------------------------------------------
> > > ---
> > > > Lost Password:
> > > > http://www.tech-assist.org and select "Login Problems?".
> > > > Email Archives:
> > > > //www.freelists.org/archives/techassist/
> > >
> > >
> >
>
> --------------------------------------------------------------------------
> > ---
> > > Lost Password:
> > > http://www.tech-assist.org and select "Login Problems?".
> > > Email Archives:
> > > //www.freelists.org/archives/techassist/
> >
> >
> >
>
> --------------------------------------------------------------------------
> ---
> > Lost Password:
> > http://www.tech-assist.org and select "Login Problems?".
> > Email Archives:
> > //www.freelists.org/archives/techassist/
>
>
>
> --------------------------------------------------------------------------
---
> Lost Password:
> http://www.tech-assist.org and select "Login Problems?".
> Email Archives:
> //www.freelists.org/archives/techassist/
-----------------------------------------------------------------------------
Lost Password:
http://www.tech-assist.org and select "Login Problems?".
Email Archives:
//www.freelists.org/archives/techassist/
Other related posts:
