[TechAssist] Re: **Urgent* TA RCA CTC167CS Pincushion
- From: "Jim Myers" <jr.myers@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sat, 10 Jan 2004 10:53:20 -0500
Jeff, according to Parts Finder that set should have a CTC169 chassis, is
Parts Finder wrong or has someone pulled a swap?
here are some CTC167 tips anyway:
---------------------------------------------------------------
Text pasted from WinSTIPS 2.0
http://www.ServiceSoftware.com
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RCA CTC167
Pincushion Inop, Width Pulled In Too, About An Inch Or So Of Black On Both
Sides
Marshfield Tv
Defective Q4804, Recommend Replacing W/Original Part # Only, 190482.
Another Tip Suggests Ecg399, But It Didn'T Work; Width Filled Out But Still
Had No Pin Control. Replaced W/Original Transistor (Says 1101-01a On It)
And All'S Well.
---------------------------------------------------------------
RCA CTC167
Pincushion Not Working
Robinson Electronics
Replace Cr4804, May Test Good.
---------------------------------------------------------------
RCA CTC167
Pincushion Not Working Properly
Smd R4802, An 1800ohm Chip, Had A Cracked End Cap.
---------------------------------------------------------------
RCA CTC167
Pincushion Not Working Properly
Patrick Lavergne
Cr4804, Tests Good But Causing Trouble
---------------------------------------------------------------
RCA CTC167
Shutdown, Highly Intermittent, May Be Preceded By Fade To Black Or Pin/Width
Fluctuations.
Marshfield Tv
Problem Was Vibration Sensitive, Very Hard To Isolate, If You Touched The
Board Anywhere It Would Act Up. Finally Did A Blanket Solder Of All
Components (Surface Mount Too) Within About A Two Inch Radius Of Q107 And
That Got It.
---------------------------------------------------------------
RCA CTC167
Width Pulled (Bowed) In On Sides
A Helper Elect
Cr4802 Ecg506
---------------------------------------------------------------
RCA CTC167
Width Too Wide, Pincushioning Slightly Distorted
Ford'S Tv & Video Service
Defective Transistor, Q4804 (190482), Open Resistors, R4809 (470 Ohm 1w),
R4807 (1800 Ohm 1/2w), Open Capacitor, C4805 (10 Uf 50v Bi-Polar, 105c).
---------------------------------------------------------------
RCA CTC167R
Pincussion Problem On Left And Right Sides
Danny Willard Technical Aspects
Replace Q4804 And Resolder Smd C4809 And R4817
---------------------------------------------------------------
**************************************************
Jim Myers
Since 1972
Telrad Electronic Services Co.
Fort Wayne, IN 46815
*************************************************
----- Original Message -----
From: <support@xxxxxxxxxxxxxxxxxx>
To: "Techassist" <techassist@xxxxxxxxxxxxx>
Sent: Saturday, January 10, 2004 9:57 AM
Subject: [TechAssist] **Urgent* TA RCA CTC167CS Pincushion
I called the customer yesterday to tell them the set was ready, when I
noticed the pincushion problem.
This set probably had this problem before the vertical failure, but customer
let it go.
Customer wants set today...and though I appreciate everyone's input, this
unit DOES NOT have any of the
components in this pincushion circuit. I had a CTC156H pretty much the exact
same thing.. Pincushion
circuit is silk screened on board, but nothing there.
I think most of you can understand the predicament with this customer...
If anyone can advise me how to adjust the pincushion or fix for this
problem, I'd be grateful.
Set has HOT with internal damper..I replaced HOT with no luck.
Thank you.
Jeff Dougherty
Intrepid Video TV/VCR
263 S Front St
Steelton PA 17113
fax...717-564-4952
www.intrepid-video.com www.tech-repair.net
Model F27194SM.(Similar to CTC156H)
Unit came in with no vertical. After several hours of troubleshooting,
found one of the terminals on the
yoke broken..repaired.
During all this time, I had to pull the CRT socket so I didn't burn the CRT.
Another tech must have had
this set because someone put the CRT back without lining it up and two pins
were shorted.. G1 and Red K, I
think..
After the vertical problem, I found retrace on the screen. Found shorted
transistor on main
board..replaced.
Now, I have severe pincushion on sides OSD and TV are bowed. I can find no
pincushion circuit on this
board, yet Fix Finder references some components. I see the markings on this
PCB, but nothing at these
locations.
Can someone tell me how to adjust the pincushion? I see on adjustments for
horizontal size or pincushion..
Thank you.
Jeff Dougherty
Intrepid Video TV/VCR
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