[TechAssist] Re: RCA CTC157 no video, has HV and OSD

  • From: "John Conti" <contitv@xxxxxxxxxxx>
  • To: techassist@xxxxxxxxxxxxx
  • Date: Sun, 14 Aug 2005 19:07:32 -0500

Bill, C4502  (220 @35v) going to pin 5 & 9 of vert. output U4501.

John
Conti,TV
Texas

>From: Bill Grabowski <bgrabowski@xxxxxxxxx>
>Reply-To: techassist@xxxxxxxxxxxxx
>To: techassist@xxxxxxxxxxxxx
>Subject: [TechAssist] Re: RCA CTC157 no video, has HV and OSD
>Date: Sun, 14 Aug 2005 17:10:11 -0500
>
>That reminds me of a capacitor in the Vertical blanking circuit. If you
>turn up the screen control slightly and get a slick
>screen and retrace I bet its that capacitor. It's been to long ago to
>give you the part location. It was near front edge of
>circuit board in vertical circuit with a value of 220m/35v
>**********************
>Bill Grabowski
>Triangle Appliance
>3813 Roosevelt Rd
>Kenosha WI  53142
>262-694-6500
>262-694-6523   fax
>bgrabowski@xxxxxxxxx
>**********************
>
>
>Electric Medic wrote:
>
> >Thanks Guys. I am going on the service call tomorrow. Just wanted to be 
>as
> >prepared as possible in case this little old lady is looking over my
> >shoulder. She is a great grandma and wants this late 80's console fixed
> >really bad. I was aware of the 2906 on the 169's, but that usually causes
> >bright screen, retrace. I wasn't sure on the 157. Also, mine isn't bright
> >screen and retrace. I have black screen with HV and OSD and good detected
> >audio, just no video.
> >
> >Perry Bower
> >Electric Medic
> >"It's Cheaper to Keep Her"
> >http://www.electricmedic.com
> >3850 Washington Road  Suite 4C
> >Martinez, Georgia 30907
> >Phone: 706-8MEDIC4  (863-3424)
> >Phone: 706-863-3474
> >Fax: 706-863-2316
> >mailto:info@xxxxxxxxxxxxxxxxx
> >
> >
> >-----Original Message-----
> >From: techassist-bounce@xxxxxxxxxxxxx
> >[mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of Bill Grabowski
> >Sent: Sunday, August 14, 2005 9:18 AM
> >To: techassist@xxxxxxxxxxxxx
> >Subject: [TechAssist] Re: RCA CTC157 no video, has HV and OSD
> >
> >
> >On the CTC157 I believe the location is Q2901 and on a CTC169 its Q2906.
> >**********************
> >Bill Grabowski
> >Triangle Appliance
> >3813 Roosevelt Rd
> >Kenosha WI  53142
> >262-694-6500
> >262-694-6523   fax
> >bgrabowski@xxxxxxxxx
> >**********************
> >
> >
> >
> >Electric Medic wrote:
> >
> >
> >
> >>Hey Bill and All: Is it Q2901 or Q2906 that commonly fails on this 
>CTC157
> >>that causes no video, good sound and has OSD. WinStips shows Q2901 and
> >>everybody else says Q2906 is the transistor that fails. I have no video,
> >>
> >>
> >but
> >
> >
> >>have sound and OSD, just a blank screen. Also, could it be a tuner on 
>this
> >>set, or if you have good audio the tuner must be good like on some?
> >>
> >>
> >Customer
> >
> >
> >>said lightning hit it and she had some other things in her house hit. 
>Does
> >>anyone from this chassis time frame remember if one of these transistors
> >>failed from surge? Also is the 143806 the correct part number instead of
> >>
> >>
> >the
> >
> >
> >>159. Thanks
> >>
> >>Perry Bower
> >>Electric Medic
> >>"It's Cheaper to Keep Her"
> >>http://www.electricmedic.com
> >>3850 Washington Road  Suite 4C
> >>Martinez, Georgia 30907
> >>Phone: 706-8MEDIC4  (863-3424)
> >>Phone: 706-863-3474
> >>Fax: 706-863-2316
> >>mailto:info@xxxxxxxxxxxxxxxxx
> >>
> >>
> >>-----Original Message-----
> >>From: techassist-bounce@xxxxxxxxxxxxx
> >>[mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of Bill Grabowski
> >>Sent: Tuesday, September 30, 2003 5:43 AM
> >>To: techassist@xxxxxxxxxxxxx
> >>Subject: [TechAssist] Re: RCA CTC157 Luma Buffers Repeat Failure!
> >>
> >>
> >>In a pinch I've used the ECG159 and have had them fail but never had a
> >>143806 fail unless the pix tube had intermittent short. Possibly  check
> >>with CRT tester and remove any shorts with pix tube laying on face. Just
> >>my 2 cents.
> >>
> >>                                                    Bill
> >>
> >>Bill Grabowski
> >>Triangle Appliance
> >>Kenosha,WI 53142
> >>bgrabowski@xxxxxxxxx
> >>
> >>Shoreline Electronics wrote:
> >>
> >>
> >>
> >>
> >>>Make : RCA
> >>>Chassis : CTC157 series.
> >>>Problem : Shorts out Q2906 luma buffer every few days....customer hears 
>a
> >>>ZAP then set goes to washed out screen with retrace.
> >>>
> >>>I'm using ECG159 subs ( 2N3906 generics)
> >>>
> >>>Is there an intermittent short ( HK?) causing this or do I need a 
>beefier
> >>>buffer transistor to resist failure ?
> >>>
> >>>
> >>>==========================
> >>>Jeff Stielau
> >>>Shoreline Electronics Repair
> >>>344 East Main Street
> >>>Clinton,CT 06413
> >>>860-399-1861
> >>>860-664-3535 (fax)
> >>>jstielau@xxxxxxxx
> >>>==========================
> >>>"If you push something hard enough it will fall over."
> >>>Fudd's First Law of Opposition - Sir Sidney Fudd
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
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> >>Bill Grabowski
> >>Triangle Appliance
> >>Kenosha,Wi 53142
> >>262-694-6500
> >>262-694-6523 fax
> >>bgrabowski@xxxxxxxxx
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> >--
> >**********************
> >Bill Grabowski
> >Triangle Appliance
> >3813 Roosevelt Rd
> >Kenosha WI  53142
> >262-694-6500
> >262-694-6523   fax
> >bgrabowski@xxxxxxxxx
> >**********************
> >
> >
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>**********************
>Bill Grabowski
>Triangle Appliance
>3813 Roosevelt Rd
>Kenosha WI  53142
>262-694-6500
>262-694-6523   fax
>bgrabowski@xxxxxxxxx
>**********************
>
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