[TechAssist] Re: RCA F31672ET - CTC187CJ - Squeals on plug-in
- From: Kevin <kevintv@xxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sat, 08 May 2004 12:33:33 -0700
The newer RCA flybacks do not follow the "ringing rules" of 10 rings or
more is good. More like greater than 25 rings is good for these newer
flybacks.
Kevin Wilks
Kevin's TV & Video Repair
Penticton BC Canada
kevintv@xxxxxxx
-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of al m
Sent: Saturday, May 08, 2004 5:58 AM
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] Re: RCA F31672ET - CTC187CJ - Squeals on plug-in
I just tested a CTC197 flyback and it rang 15 times, good right? Wrong
the
new one rang 43 times. Not always 100%.
Al Marquardt
ampm@xxxxxxx
Al Marquardt Electronic Repair
206 W Main
Girardville Pa. 17935
----- Original Message -----
From: "Bruce Tiedeman" <btied@xxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Saturday, May 08, 2004 7:38 AM
Subject: [TechAssist] Re: RCA F31672ET - CTC187CJ - Squeals on plug-in
> David, I am working on the same chassis now. I removed the flyback to
test
> properly with a ringer test. It tested good. When the plastic laminate
of
> the flyback breaks down most of the time the ringer check will test
OK.. I
> put a new output transistor in and when the set tried to start their
was
> arcing from the top of flyback between core and H.V lead like Tony
says.
> Quality of these small flybacks is poor and they try to drive these
bigger
> picture tubes with a little unit does not work for long.
> My point is , even if you could test the flyback it might test good
but in
> fact be the problem. They go for $67 at Global . I wanted to order one
from
> the U.S but by the time you pay delivery and brokerage would be almost
that
> price.
> good luck,
> Bruce.
>
> B&T Electronics
> 139 Margaret St
> Sarnia Ontario
> Canada
> N7T 2Y3
> 519 344 1850
>
> ----- Original Message -----
> From: "David Lessard" <mr_fixit@xxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Friday, May 07, 2004 6:55 AM
> Subject: [TechAssist] Re: RCA F31672ET - CTC187CJ - Squeals on plug-in
>
>
> > SMPS is working just fine, +B is 145VDC in standby. Replaced HOT,
turned
> > TV "ON" and heard two snaps then the HOT blew again. Could this
snapping
> > sound be an arcing flyback? Problem is test this problem, I really
can't
> > adjust the +B because it's a SMPS. If I could limit the +B I could
then
> > monitor the current, shutting down the +B before the HOT blows. Is
there
> > any other way to check if the flyback is bad, I don't have REAL
flyback
> > ringer, just my oscillator and scope.
> >
> > David Lessard
> > Alexandria Electronics
> > mr_fixit@xxxxxxxxxxxx
> >
> > -----Original Message-----
> > From: techassist-bounce@xxxxxxxxxxxxx
> > [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of tvservice
> > Sent: Friday, May 07, 2004 2:54 PM
> > To: techassist@xxxxxxxxxxxxx
> > Subject: [TechAssist] Re: RCA F31672ET - CTC187CJ - Squeals on
plug-in
> >
> > CR4106 #243636 diode
> > U4101 STK730-030 #223948 reg ic
> > Should I also come over and take the back off for you?
> > :>) he he
> > hth
> > Robert
> > tvservice@xxxxxxxxxxxxx
> > H & H Electronics Inc
> >
> >
> > ----- Original Message -----
> > From: "David Lessard" <mr_fixit@xxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Thursday, May 06, 2004 1:08 PM
> > Subject: [TechAssist] RCA F31672ET - CTC187CJ - Squeals on plug-in
> >
> >
> > > This TV squeals upon plug-in. I know there's a short somewhere
causing
> > > the chopper PS to squeal, question is where? Does anyone know what
the
> > > common causes for this problem are? I don't have the TV on the
bench
> > yet
> > > and I'm asking this question in advance.
> > >
> > >
> > > Thanks in advance.
> > >
> > >
> > >
> > > David Lessard
> > >
> > > Alexandria Electronics
> > >
> > > 50 Harrison Street
> > >
> > > P.O. Box 1366
> > >
> > > Alexandria, Ontario.
> > >
> > > Canada
> > >
> > > K0C-1A0
> > >
> > > mr_fixit@xxxxxxxxxxxx
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> >
------------------------------------------------------------------------
> > --
> > ---
> > > 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:
