[TechAssist] Re: RCA F27201GG (CTC 169CAQS) VERT DEFLECTION?
- From: "Jeff F" <jlfonz@xxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 25 Mar 2004 12:11:34 -0600
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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