[TechAssist] Re: RCA F27201GG (CTC 169CAQS) VERT DEFLECTION?
- From: "Bruce Tiedeman" <btied@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 25 Mar 2004 14:01:19 -0500
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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