[TechAssist] Re: RCA F27201GG (CTC 169CAQS) VERT DEFLECTION?
- From: Jim Shupe <jim@xxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Fri, 26 Mar 2004 05:39:36 -0800 (PST)
Sounds to me like the old "it never did that til YOU
worked on it" syndrome to me. RCA typically defeats
the vertical during degauss in their designs.
The worst thing you can get into is trying to fix
something that ain't broke.
Jim Shupe, CET
Lloyd's TV
Yucca Valley, CA
--- al m <ampm@xxxxxxx> wrote:
> Not sure all I know is it was here before and the
> picture was all stretched
> out and he said there was a line. I never saw the
> line and to this day still
> haven't seen the line.
> 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: Thursday, March 25, 2004 2:01 PM
> Subject: [TechAssist] Re: RCA F27201GG (CTC 169CAQS)
> VERT DEFLECTION?
>
>
> > Al when the set is first turned on look at the
> screen and see if you see a
> > faint vert (deflection) line about 1\4' high
> before the picture comes in?
> > Did the customer send this back for this type of a
> problem? It does not
> > affect picture once it is on.
> >
> > Bruce.
> > ----- Original Message -----
> > From: "al m" <ampm@xxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Thursday, March 25, 2004 1:07 PM
> > Subject: [TechAssist] Re: RCA F27201GG (CTC
> 169CAQS) VERT DEFLECTION?
> >
> >
> > > I got the same problem here. I haven't seen the
> problem yet. Customer
> says
> > > it only happens when they turn it on. Original
> problem was picture was
> > > stretched and the line when turned on. Caps in
> the vertical section
> fixed
> > > that.
> > > Went over the regulator and changed CR4118 and
> the thing went out. Came
> > back
> > > 2 weeks later with this line thing??????? I
> thought I had it fixed when
> > the
> > > picture came up OK. Never have seen the line.
> > > Al Marquardt
> > > ampm@xxxxxxx
> > > Al Marquardt Electronic Repair
> > > 206 W Main
> > > Girardville Pa. 17935
> > > ----- Original Message -----
> > > From: "Wayne Vanaman"
> <Wayne@xxxxxxxxxxxxxxxxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Thursday, March 25, 2004 12:17 PM
> > > Subject: [TechAssist] Re: RCA F27201GG (CTC
> 169CAQS) VERT DEFLECTION?
> > >
> > >
> > > > Normal operation.
> > > > Vertical is blanked during degauss.
> > > > If this is a "problem" turn the main screen
> down a lttle.
> > > >
> > > > Wayne Vanaman
> > > > Omega Electronics
> > > > 6904 W Fairfield Dr
> > > > Pensacola, Fl. 32506-3310
> > > >
> > > > Wayne@xxxxxxxxxxxxxxxxxxxxx
> > > > WWW.PensacolaTVRepair.Com
> > > >
> > > > 850-456-5995 voice
> > > > 850-458-6369 fax
> > > >
> > > >
> > > > ----- Original Message -----
> > > > From: "Bruce Tiedeman" <btied@xxxxxxxxxxxx>
> > > > To: <techassist@xxxxxxxxxxxxx>
> > > > Sent: Thursday, March 25, 2004 10:17 AM
> > > > Subject: [TechAssist] RCA F27201GG (CTC
> 169CAQS) VERT DEFLECTION?
> > > >
> > > >
> > > > > "Momentary no vert deflection then OK". At
> start up.
> > > > > I hope some one can shed some light on this
> problem, At turn on you
> > see
> > > a
> > > > > collapsed vert deflection (about 1\4"
> deflection) then I hear the
> > relay
> > > > > click an the set comes on full deflection as
> the CRT heaters lights
> up
> > > the
> > > > > tube. The regulation is good around 143
> volts similar in standby.
> > > > > I did change the cr4118, Q4402 and Q4202.
> Soldered all board
> > connections
> > > > in
> > > > > Vet circuit. Replaced C403K.
> > > > > I am starting to go around in circles on
> this set. Trying to figure
> > out
> > > > the
> > > > > theory of operation. I am working off of a
> CTC169 print but has
> > > different
> > > > > parts than shown in data base. U4501 the
> vert drive switch shows a
> > drive
> > > > > pulse OK at turn on.
> > > > > . Sorry if my explanation is vague. I also
> changed the degaussing
> > switch
> > > > > transistor!
> > > > > As soon as I hit the tack switch the vert
> line shows up, then the
> > relay
> > > > > sounds and the picture comes in ?
> > > > > I don't want to send out this set as is. The
> original condition was
> > > > > regulator problem which has been repaired ,
> then I noticed this.
> > Should
> > > > not
> > > > > see any kind of visible deflection this soon
> at turn on?
> > > > >
> > > > > Bruce.
> > > > >
> > > > > B&T Electronics
> > > > > 139 Margaret St
> > > > > Sarnia Ontario
> > > > > Canada
> > > > > N7T 2Y3
> > > > > 519 344 1850
> > > > >
> > > > >
> > > > >
> > > >
> > >
> >
> >
>
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