[TV] Re: * RCA 35" No Horiz Scan

To: <tv@xxxxxxxxxxxxxxx>
Subject: [TV] Re: * RCA 35" No Horiz Scan
From: "Star-Tech" <STAR-TECH@xxxxxxxxxxxx>
Date: Tue, 5 Apr 2005 10:09:54 -0400
Cc: <star-tech@xxxxxxxxxxxx>
References: <20050403034701.97850.qmail@web52103.mail.yahoo.com> <000501c53807$691900e0$0293e504@l0v3e0> <000601c53986$f40200a0$6101a8c0@btnrug1.la.home.com> <001601c53991$34b8e1e0$6101a8c0@btnrug1.la.home.com>
Reply-to: tv@xxxxxxxxxxxxxxx
Sender: tv-bounce@xxxxxxxxxxxxxxx
Hello:
        The pin-out I have on a LM 311 shows pins 3 the
invert input and pin 2 is the non-invert input. Also pin 8
is the + VCC & pin 4 is the - VCC, with that in mind
are you missing a voltage ?
                                                  Greg Zumbro

----- Original Message ----- 
From: <tom_rf@xxxxxxxxxxxxx>
To: <tv@xxxxxxxxxxxxxxx>
Sent: Monday, April 04, 2005 11:40 PM
Subject: [TV] Re: * RCA 35" No Horiz Scan


> I did not find any open resistors tracing out the circ.; However, My
> comparator output pin 7, is suspect, being almost nothing, even when
> grounding either comparator input pins 5, 6 (having 25.9v on both pins
> high,but equal.
> Output pin 7 not driving the input of the driver transistor,and
consequently
> no drive for the pin cush output transistor.
> I will pickup a replacement comparator tomorrow, as it looks like it is
the
> problem componet for this part of the problem... but I am still open for
> input until this beast has been tamed.
>
>                                         Thanks again,
>
>
>
>
> tom_rf@xxxxxxxxxxxxx
>
> ----- Original Message ----- 
> From: <tom_rf@xxxxxxxxxxxxx>
> To: <tv@xxxxxxxxxxxxxxx>
> Sent: Monday, April 04, 2005 9:27 PM
> Subject: [TV] Re: * RCA 35" No Horiz Scan
>
>
> > Yes,  I have a LM311 8pin-dip comparator chip,also having a driver off
of
> > that and an output tranistor in the pin cushion circuitry area, before
> > driving the yoke coil.  I havent had a second over the weekend to check
> > voltages yet, but I will see if I can hunt down that fusable resistor
that
> > you have seen before...
> >
> >                                         Thank you very much for your
> input,
> >
> >
> >
> > tom_rf@xxxxxxxxxxxxx
> >
> > ----- Original Message ----- 
> > From: "Star-Tech" <STAR-TECH@xxxxxxxxxxxx>
> > To: <tv@xxxxxxxxxxxxxxx>
> > Cc: <star-tech@xxxxxxxxxxxx>
> > Sent: Saturday, April 02, 2005 11:41 PM
> > Subject: [TV] Re: * RCA 35" No Horiz Scan
> >
> >
> > > Hello:
> > >         I still think you have lost control over the pincushing
> > > circuit, not sure but do you have a stand up type board
> > > near the H.O.T ? If so it has a dual op-amp ic, 8 pin IC, and a
resistor
> > > will open when you are missing
> > > the horiz sweep.
> > >                                                         Greg Zumbro
> > >
> > > ----- Original Message ----- 
> > > From: "J Sven2" <jsven2@xxxxxxxxx>
> > > To: <tv@xxxxxxxxxxxxxxx>
> > > Sent: Saturday, April 02, 2005 10:47 PM
> > > Subject: [TV] Re: * RCA 35" No Horiz Scan
> > >
> > >
> > > > if you read down to the bottom of this email, it is
> > > > listed in the original email. (CTC179dL)
> > > >
> > > > Thanks
> > > >
> > > > --- al m <ampm@xxxxxxx> wrote:
> > > >
> > > > > Chassis #?
> > > > > Al Marquardt
> > > > > ampm@xxxxxxx
> > > > > Al Marquardt Electronic Repair
> > > > > 206 W Main
> > > > > Girardville Pa. 17935
> > > > > ----- Original Message ----- 
> > > > > From: <tom_rf@xxxxxxxxxxxxx>
> > > > > To: <tv@xxxxxxxxxxxxxxx>
> > > > > Sent: Thursday, March 31, 2005 12:05 AM
> > > > > Subject: [TV] Re: * RCA 35" No Horiz Scan
> > > > >
> > > > >
> > > > > > the range ctls appear to be working in all but
> > > > > pin/horiz width
> > > > > > adjustments...by the way I am winging it w/out a
> > > > > schematic, I might have
> > > > > > to
> > > > > > throw in the towel at some pt  and download one.
> > > > > >
> > > > > >                                thanks,
> > > > > >
> > > > > > tom_rf@xxxxxxxxxxxxx
> > > > > >
> > > > > > ----- Original Message ----- 
> > > > > > From: "Star-Tech" <STAR-TECH@xxxxxxxxxxxx>
> > > > > > To: <tv@xxxxxxxxxxxxxxx>
> > > > > > Cc: <star-tech@xxxxxxxxxxxx>
> > > > > > Sent: Wednesday, March 30, 2005 10:07 PM
> > > > > > Subject: [TV] Re: * RCA 35" No Horiz Scan
> > > > > >
> > > > > >
> > > > > >> Hello:
> > > > > >>
> > > > > >>         Do the numbers move in the horizonal
> > > > > parameter
> > > > > >> for the set-up service mode? Should be at 20 to
> > > > > 22 for
> > > > > >> width. If so you might find a shorted transistor
> > > > > in the
> > > > > >> pincushing circuit.
> > > > > >>
> > > > > >>
> > > > > Greg Zumbro
> > > > > >> ----- Original Message ----- 
> > > > > >> From: <tom_rf@xxxxxxxxxxxxx>
> > > > > >> To: <tv@xxxxxxxxxxxxxxx>
> > > > > >> Sent: Wednesday, March 30, 2005 10:05 PM
> > > > > >> Subject: [TV] Re: * RCA 35" No Horiz Scan
> > > > > >>
> > > > > >>
> > > > > >> >
> > > > > >> > 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
> > > > > >> > > > > >
> > > > > >> > > > >
> > > > > >> > > >
> > > > > >> >
> > > > > >>
> > > > >
> > > >
> > >
> >
>
>>--------------------------------------------------------------------------
> > > -
> > > > > >> > > >----
> > > > > >> > > > > >To remove yourself DO NOT Email
> > > > > TV@xxxxxxxxxxxxxxx you MUST
> > > > > >> > > > > >email
> > > > > >> > > > > >TV-REQUEST@xxxxxxxxxxxxxxx with REMOVE
> > > > > as the subject.
> > > > > >> > > > > >Sent VIA Tech Assist's email server-
> > > > > tv@xxxxxxxxxxxxxxx
> > > > > >> > > > > >TV email Archives at:
> > > > > http://www.circuitwork.com/archive/TV/
> > > > > >> > > > >
> > > > > >> > > >
> > > > > >> >
> > > > > >>
> > > > >
> > > >
> > >
> >
>
>>--------------------------------------------------------------------------
> > > -
> > > > > >> > > >----
> > > > > >> > > > > >
> > > > > >> > > > >
> > > > > >> > > > >
> > > > > >> > >
> > > > > >> >
> > > > > >>
> > > > >
> > > >
> > >
> >
>
>>--------------------------------------------------------------------------
> > > > > >> > > >-----
> > > > > >> > > > > To remove yourself DO NOT Email
> > > > > TV@xxxxxxxxxxxxxxx you MUST email
> > > > > >> > > > > TV-REQUEST@xxxxxxxxxxxxxxx with REMOVE as
> > > > > the subject.
> > > > > >> > > > > Sent VIA Tech Assist's email server-
> > > > > tv@xxxxxxxxxxxxxxx
> > > > > >> > > > > TV email Archives at:
> > > > > http://www.circuitwork.com/archive/TV/
> > > > > >> > > > >
> > > > > >> > >
> > > > > >> >
> > > > > >>
> > > > >
> > > >
> > >
> >
>
>>--------------------------------------------------------------------------
> > > > > >> > > >-----
> > > > > >> > > > >
> > > > > >> > > >
> > > > > >> > >
> > > > > >> >
> > > > > >>
> > > > >
> > > >
> > >
> >
>
>>--------------------------------------------------------------------------
> > > -
> > > > > >> > ----
> > > > > >> > > >To remove yourself DO NOT Email
> > > > > TV@xxxxxxxxxxxxxxx you MUST email
> > > > > >> > > >TV-REQUEST@xxxxxxxxxxxxxxx with REMOVE as
> > > > > the subject.
> > > > > >> > > >Sent VIA Tech Assist's email server-
> > > > > tv@xxxxxxxxxxxxxxx
> > > > > >> > > >TV email Archives at:
> > > > > http://www.circuitwork.com/archive/TV/
> > > > > >> > >
> > > > > >> >
> > > > > >>
> > > > >
> > > >
> > >
> >
>
>>--------------------------------------------------------------------------
> > > -
> > > > > >> > ----
> > > > > >> > > >
> > > > > >> > >
> > > > > >> > >
> > > > >
> > > > _________________________________________________________________
> > > > > >> > > Is your PC infected? Get a FREE online
> > > > > computer virus scan from
> > > > > > McAfee®
> > > > > >> > > Security.
> > > > >
> > > > http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963
> > > > > >> > >
> > > > > >> >
> > > > > >>
> > > > > >>
> > > > >
> > >
> >
>
> --------------------------------------------------------------------------
> > > > > >> > -----
> > > > > >> > > To remove yourself DO NOT Email
> > > > > TV@xxxxxxxxxxxxxxx you MUST email
> > > > > >> > > TV-REQUEST@xxxxxxxxxxxxxxx with REMOVE as the
> > > > > subject.
> > > > > >> > > Sent VIA Tech Assist's email server-
> > > > > tv@xxxxxxxxxxxxxxx
> > > > > >> > > TV email Archives at:
> > > > > http://www.circuitwork.com/archive/TV/
> > > > > >> >
> > > > > >>
> > > > > >>
> > > > >
> > >
> >
>
> --------------------------------------------------------------------------
> > > > > >> > -----
> > > > > >> > >
> > > > > >> >
> > > > > >>
> > > > > >>
> > > > >
> > >
> >
>
> --------------------------------------------------------------------------
> > > > > >> -----
> > > > > >> > To remove yourself DO NOT Email
> > > > > TV@xxxxxxxxxxxxxxx you MUST email
> > > > > >> > TV-REQUEST@xxxxxxxxxxxxxxx with REMOVE as the
> > > > > subject.
> > > > > >> > Sent VIA Tech Assist's email server-
> > > > > tv@xxxxxxxxxxxxxxx
> > > > > >> > TV email Archives at:
> > > > > http://www.circuitwork.com/archive/TV/
> > > > > >>
> > > > > >>
> > > > >
> > >
> >
>
> --------------------------------------------------------------------------
> > > > > >> -----
> > > > > >> >
> > > > > >>
> > > > > >>
> > > > >
> > >
> >
>
> --------------------------------------------------------------------------
> > > > > > -----
> > > > > >> To remove yourself DO NOT Email
> > > > > TV@xxxxxxxxxxxxxxx you MUST email
> > > > > >> TV-REQUEST@xxxxxxxxxxxxxxx with REMOVE as the
> > > > > subject.
> > > > > >> Sent VIA Tech Assist's email server-
> > > > > tv@xxxxxxxxxxxxxxx
> > > > > >> TV email Archives at:
> > > > > http://www.circuitwork.com/archive/TV/
> > > > > >>
> > > > >
> > >
> >
>
> --------------------------------------------------------------------------
> > > > > > -----
> > > > > >>
> > > > > >
> > > > > >
> > > > >
> > >
> >
>
> --------------------------------------------------------------------------
> > > -----
> > > > > > To remove yourself DO NOT Email TV@xxxxxxxxxxxxxxx
> > > > > you MUST email
> > > > > > TV-REQUEST@xxxxxxxxxxxxxxx with REMOVE as the
> > > > > subject.
> > > > > > Sent VIA Tech Assist's email server-
> > > > > tv@xxxxxxxxxxxxxxx
> > > > > > TV email Archives at:
> > > > > http://www.circuitwork.com/archive/TV/
> > > > > >
> > > > >
> > >
> >
>
> --------------------------------------------------------------------------
> > > -----
> > > > > >
> > > > > >
> > > > >
> > > > >
> > > > >
> > >
> >
>
> --------------------------------------------------------------------------
> > > -----
> > > > > To remove yourself DO NOT Email TV@xxxxxxxxxxxxxxx
> > > > > you MUST email
> > > > > TV-REQUEST@xxxxxxxxxxxxxxx with REMOVE as the
> > > > > subject.
> > > > > Sent VIA Tech Assist's email server-
> > > > > tv@xxxxxxxxxxxxxxx
> > > > > TV email Archives at:
> > > > > http://www.circuitwork.com/archive/TV/
> > > > >
> > >
> >
>
> --------------------------------------------------------------------------
> > > -----
> > > > >
> > > > >
> > > >
> > > >
> > > >
> > > >
> > > > __________________________________
> > > > Do you Yahoo!?
> > > > Yahoo! Personals - Better first dates. More second dates.
> > > > http://personals.yahoo.com
> > > >
> > >
> >
>
> --------------------------------------------------------------------------
> > > -----
> > > > To remove yourself DO NOT Email TV@xxxxxxxxxxxxxxx you MUST email
> > > > TV-REQUEST@xxxxxxxxxxxxxxx with REMOVE as the subject.
> > > > Sent VIA Tech Assist's email server- tv@xxxxxxxxxxxxxxx
> > > > TV email Archives at: http://www.circuitwork.com/archive/TV/
> > >
> >
>
> --------------------------------------------------------------------------

> > > -----
> > > >
> > >
> >
>
> --------------------------------------------------------------------------
> > -----
> > > To remove yourself DO NOT Email TV@xxxxxxxxxxxxxxx you MUST email
> > > TV-REQUEST@xxxxxxxxxxxxxxx with REMOVE as the subject.
> > > Sent VIA Tech Assist's email server- tv@xxxxxxxxxxxxxxx
> > > TV email Archives at: http://www.circuitwork.com/archive/TV/
> >
>
> --------------------------------------------------------------------------
> > -----
> > >
> >
>
> --------------------------------------------------------------------------
> -----
> > To remove yourself DO NOT Email TV@xxxxxxxxxxxxxxx you MUST email
> > TV-REQUEST@xxxxxxxxxxxxxxx with REMOVE as the subject.
> > Sent VIA Tech Assist's email server- tv@xxxxxxxxxxxxxxx
> > TV email Archives at: http://www.circuitwork.com/archive/TV/
>
> --------------------------------------------------------------------------
> -----
> >
>
> --------------------------------------------------------------------------
-----
> To remove yourself DO NOT Email TV@xxxxxxxxxxxxxxx you MUST email
> TV-REQUEST@xxxxxxxxxxxxxxx with REMOVE as the subject.
> Sent VIA Tech Assist's email server- tv@xxxxxxxxxxxxxxx
> TV email Archives at: http://www.circuitwork.com/archive/TV/
> --------------------------------------------------------------------------
-----
>

-------------------------------------------------------------------------------
To remove yourself DO NOT Email TV@xxxxxxxxxxxxxxx you MUST email
TV-REQUEST@xxxxxxxxxxxxxxx with REMOVE as the subject.
Sent VIA Tech Assist's email server- tv@xxxxxxxxxxxxxxx
TV email Archives at: http://www.circuitwork.com/archive/TV/
-------------------------------------------------------------------------------
Follow-Ups:
- [TV] Re: * RCA 35" No Horiz Scan
  - From: tom_rf
References:
- [TV] Re: * RCA 35" No Horiz Scan
  - From: J Sven2
- [TV] Re: * RCA 35" No Horiz Scan
  - From: Star-Tech
- [TV] Re: * RCA 35" No Horiz Scan
  - From: tom_rf
- [TV] Re: * RCA 35" No Horiz Scan
  - From: tom_rf
Prev by Date: [TV] Re: RCA COMPACT AUDIO SYSTEM MODEL RS2600
Next by Date: [TV] Re: RCA COMPACT AUDIO SYSTEM MODEL RS2600
Previous by thread: [TV] Re: * RCA 35" No Horiz Scan
Next by thread: [TV] Re: * RCA 35" No Horiz Scan
Index(es):
- Date
- Thread