[TechAssist] Re: RCA F27201GG (CTC 169CAQS) VERT DEFLECTION?
- From: "Bruce Tiedeman" <btied@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 25 Mar 2004 13:58:08 -0500
I changed that cap , it is a round 48uf at 200volts if I remember(C403K).
Hope this one is fixed for sure, am sending it out?
I can see the line in mine still faintly at turn on. I have not noticed this
before on these sets. Many CTC169's coming in now.
Bruce.
----- Original Message -----
From: "Jeff F" <jlfonz@xxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, March 25, 2004 1:11 PM
Subject: [TechAssist] Re: RCA F27201GG (CTC 169CAQS) VERT DEFLECTION?
> I am not sure if C403k is the big blue box in the vertical---but I just
had
> a ctc169 with partial vertical collapse (actually about 2" tall with a
wierd
> foldover) It was the big blue cap in the vertical circuit. Sorry I can't
> be more descriptive (part numbers etc) but this was a used set I was
fixing
> for myself and I had a donor chassis so I wasn't even paying attention to
> numbers
>
> TV Doctor
> Avalon, Wi
>
>
> ----- 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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