[TechAssist] Re: RCA CTC197CD F32676SB (Dead)

I am trying to catch up here.

The tuner has two flat packs in it, and I have seen each on of them cause a
pulsing dead set.
I have started replacing both at the same time.  U17701 is the mixer,
227007, U17301 is the mix, 231528, and u17401 and 17501 is the pll, 231529.
Note, two tuners.  You can unplug the second tuner to eliminate that being
the cause.

The way to determine wether the IHVT is good or bad is to look at the HOT
collector, or if you can not do that, the 200v secondary, and check for
ringing at "turn on".

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: "Satguy" <satguy@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Saturday, January 31, 2004 10:46 AM
Subject: [TechAssist] Re: RCA CTC197CD F32676SB (Dead)


> I summated a question on the CTC197 yesterday, I got a couple responses
but
> I already replaced the flyback and it still pulses 3 times and that's it.
I
> am wondering if I got a bad replacement flyback. It cam in an original RCA
> box but the black cover on the bottom that covers the legs was all dirty
> with what looked like was mud that dried. I have never seen a new part
come
> like this guess I will send it back and try another just to be safe.
>
> Shaun
> Advanced Electronics
> Fort Morgan, CO 80701
>
> satguy@xxxxxxxxxxxxx
> ----- Original Message ----- 
> From: "Jim Myers" <jr.myers@xxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Saturday, January 31, 2004 9:40 AM
> Subject: [TechAssist] Re: RCA CTC197CD F32676SB (Dead)
>
>
> > The most common problem with the CTC197 that I have seen is a bad
flyback
> > but the symptom is it will try to start three or four times. If you can
> > scope the HOT collector you'll see a bad pulse with lots of ringing
while
> it
> > tries to start. You can also pull the flyback and ring test it and/or
load
> > test it if you have any of this great Sencore equipment (instead of a
nice
> > house)!
> > **************************************************
> > Jim Myers
> > Since 1972
> > Telrad Electronic Services Co.
> > Fort Wayne, IN 46815
> > *************************************************
> > ----- Original Message ----- 
> > From: "Ed Gaidies" <teltek3@xxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Saturday, January 31, 2004 11:11 AM
> > Subject: [TechAssist] Re: RCA CTC197CD F32676SB (Dead)
> >
> >
> > Ok...get rush of sound. So it is Flyback?
> > Kind of suspected H/O would be shorted if Flyback.
> >
> > -Ed-
> >
> > Ed Gaidies
> > Tel-Tek Electronics.
> > Ontario-Canada
> >
> > teltek3@xxxxxxxxxxxx
> >
> > -----Original Message-----
> > From: techassist-bounce@xxxxxxxxxxxxx
> > [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Bill Grabowski
> > Sent: January 31, 2004 10:58 AM
> > To: techassist@xxxxxxxxxxxxx
> > Subject: [TechAssist] Re: RCA CTC197CD F32676SB (Dead)
> >
> > Unsolder collector of HOT and turn on wait for rush of sound.  If sound
> > heard replace flyback.
> >
> > Bill Grabowski
> > Triangle Appliance
> >
> >
> >
> > Ed Gaidies wrote:
> >
> > > Anyone have any History on this set (Dead).
> > > Horizontal is not shorted, visual check of R14126 (33K) shows it has
> > had
> > > stress (white), but measures OK. Have checked Diodes, but in circuit
> > > only, seem ok, unless one is leaky.
> > >  When I first powered it up, could smell something heating up. Anyone
> > > have a manual for this, this is my first one. (CTC197).
> > >
> > > TIA
> > >
> > >
> > > -Ed-
> > >
> > > Ed Gaidies
> > > Tel-Tek Electronics.
> > > Ontario-Canada
> > >
> > > teltek3@xxxxxxxxxxxx
> > >
> > >
> > >
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> > -- 
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> > Triangle Appliance
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