[TV] Re: * RCA 35" No Horiz Scan
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[TV] Re: * RCA 35" No Horiz Scan
Tom, I don;t have a manual on the ctc179. I had a smimular problem on a ctc
177 and the parts involved were as folowing.
cr4403 p/n 164589
c4407 214754 must replace or cr 4403 will have short life
Q4851 p/n 200168 this was shorted
cr4402 p/n 242907
c4402 p/n 206007
know this is for a ctc177
good luck
john
>From: <tom_rf@xxxxxxxxxxxxx>
>Reply-To: tv@xxxxxxxxxxxxxxx
>To: <tv@xxxxxxxxxxxxxxx>
>Subject: [TV] Re: * RCA 35" No Horiz Scan
>Date: Thu, 31 Mar 2005 18:40:08 -0600
>
>Nope, still have little or no centering pot(s)response, screen is wide, and
>pincush effect on sides
>
>
>
>
>
>
>
>
>tom_rf@xxxxxxxxxxxxx
>
>----- Original Message -----
>From: <tom_rf@xxxxxxxxxxxxx>
>To: <tv@xxxxxxxxxxxxxxx>
>Sent: Thursday, March 31, 2005 6:00 PM
>Subject: Re: [TV] Re: * RCA 35" No Horiz Scan
>
>
> >
> > Thanks,
> > I am just about to solder it in.
> > tom_rf@xxxxxxxxxxxxx
> >
> > ----- Original Message -----
> > From: "John Conti" <contitv@xxxxxxxxxxx>
> > To: <tv@xxxxxxxxxxxxxxx>
> > Sent: Thursday, March 31, 2005 8:05 AM
> > Subject: [TV] Re: * RCA 35" No Horiz Scan
> >
> >
> > > Tom, you have to have cr4408 in the circuit it is part of the pin
>cushion
> > > circuit!
> > > john
> > >
> > > >From: <tom_rf@xxxxxxxxxxxxx>
> > > >Reply-To: tv@xxxxxxxxxxxxxxx
> > > >To: <tv@xxxxxxxxxxxxxxx>
> > > >Subject: [TV] Re: * RCA 35" No Horiz Scan
> > > >Date: Wed, 30 Mar 2005 21:05:17 -0600
> > > >
> > > >
> > > >Hey guys,
> > > > I am finally replacing the parts ordered, the two caps
>replaced
> > > >have
> > > >restored the picture and is starting to look like a TV again;
>However,
>I
> > > >still have symptoms:
> > > > 1.) Slight overscan, & there is no WIDTH adjustment
> > > >functionality in service mode "76".
> > > > 2.) I have slight "pincushion" warping upper /lower
> > sides.
> > > > 3.) Rear centering pot having no effect on picture.
> > > >
> > > > upon looking, I found that I have left out cr4408 which is missing.
>I
> > > >will
> > > >p/u that diode tomorrow.
> > > >*QUESTION: Will mssing CR4408 cause all these symptoms?
> > > >
> > > >Thanks for your response,
> > > >
> > > >tom_rf@xxxxxxxxxxxxx
> > > >
> > > >----- Original Message -----
> > > >From: "John Conti" <contitv@xxxxxxxxxxx>
> > > >To: <tv@xxxxxxxxxxxxxxx>
> > > >Sent: Friday, February 25, 2005 9:54 AM
> > > >Subject: [TV] Re: * RCA 35" No Horiz Scan
> > > >
> > > >
> > > > > Tom, c 4407 is a vertical yoke return cap if open this will give
>you
>a
> > > >thin
> > > > > vertical line the part number is 227315. the part # for c4406 is
> > 196050.
> > > >and
> > > > > for the diode cr4408 use part # 140971.
> > > > > is the set fixed are is it still not. i dont know if your looking
>for
> > > >part#s
> > > > > john
> > > > >
> > > > >
> > > > >
> > > > > >From:
> > > > > <tom_rf@xxxxxxxxxxxxx>
> > > > > >Reply-To: tv@xxxxxxxxxxxxxxx
> > > > > >To: <tv@xxxxxxxxxxxxxxx>
> > > > > >Subject: [TV] Re: * RCA 35" No Horiz Scan
> > > > > >Date: Thu, 24 Feb 2005 20:16:30 -0600
> > > > > >
> > > > > >I appreciate your reply,
> > > > > >
> > > > > > *TV Symptoms are no horiz. (Bright Vertical line in the
> > center
> > > >of
> > > > > >the
> > > > > >screen)
> > > > > > To elaborate more on the prob componets so far:
> > > > > > * C4407 is labled "S-Cap" and is a .67mic
>250v
> > > >cap.
> > > > > >(swollen)
> > > > > > * C4406 is a . *2 mic 80v electrolyt
> > > >(blown-like
> > > >a
> > > > > >firecracker)
> > > > > > *They both have runs leading to the back of the
>board
> > > >leading
> > > > > >to
> > > > > >the horiz ctrg/ h lin. pots/ and C4407 is
> > > > > > trace leads to horiz yoke wire. (There are also other
>parts
> > > >labled
> > > > > >"S-Cap" in functionality in this circ. area.)
> > > > > >
> > > > > > There is a connecting CR4408 to the smaller
> > > >voltage
> > > > > >cap
> > > > > >which may be suspect,
> > > > > > (it's label is 51 84408...2.0A Fast Recovery
> > > > > >Rect.)checking good? (w/ 10Mohm diode chk).
> > > > > >
> > > > > >
> > > > > >
> > > > > >tom_rf@xxxxxxxxxxxxx
> > > > > >
> > > > > >----- Original Message -----
> > > > > >From: "dek" <dek@xxxxxxxxxxxxxxx>
> > > > > >To: <tv@xxxxxxxxxxxxxxx>
> > > > > >Sent: Thursday, February 24, 2005 5:18 AM
> > > > > >Subject: [TV] Re: * RCA 35" No Horiz Scan
> > > > > >
> > > > > >
> > > > > > > Look for a diode in there that is the equivalent of the 4118
>in
> > the
> > > >169,
> > > > > > > but I forget what the actual number is. Replace it, don't
>check
> > > >cause
> > > >it
> > > > > > > will check good.
> > > > > > > Doug
> > > > > > >
> > > > > > > At 07:11 PM 2/23/05, you wrote:
> > > > > > > >I am working on a 35" RCA CTC179dL having no horiz scan,
> > > > > >C407-electrolytic
> > > > > > > >is blown apart, and C406 blue square cap is swollen, butnot
> > > >checking
> > > > > >shorted).
> > > > > > > >If anyone has an excerpt from this schematic, or have had
>this
> > same
> > > > > > > >particular componet problem it would be apprec.
> > > > > > > >
> > > > > > > > Thanks,
> > > > > > > >
> > > > > > > >tom_rf@xxxxxxxxxxxxx
> > > > > > > >
> > > > > > >
> > > > > >
> > > >
> >
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