Rca p52753at / ctc 169pe full raster / pincushion bowed This set has a full picture. Convergence is bowed sides Do not have a road map for this chassis.Convergence does adjust,,but cannot return to spec.
Courtesy of Jeff Dougherty >From Tech Repair CD: RCA\P46151WK PTK169 CTC169\Pix flashing on and off*when pix is present* convergence is way out\\\PTK169 CTC169\Q9V(2SC3298) and Q12V(2SA1306) shorted on conv board RCA\P52732BA\Dead set or pincushion problem\\\PTK169PGB\Replaced HV block RCA \PTK169\*Blue convergence* poor. R7119 burns up. Several parts in the blue vertical output circuit had been replaced but did not fix the set.\\\PTK169\Comparing resistance measurements between the red and blue circuits in the amplifier stages* Q7031 and Q7032* did not reveal any problems.\The collector voltage on Q7032 was running -15V. There was 300K ohms resistance between U7003 pin 6 and R7119. Found a crack in the foil pattern from\U7003 pin 6 to the junction of R7118 and R7120 (board locations 13N to 260).\Repairing the cracked foil and replacing R7119 restored normal blue convergence and the set operated normally RCA \PTK169\The blue *Convergence* was six inches off of the green\\\PTK169\R7098 was getting hot. Resistor R7091* in the base of Q7026* had changed value. Replacing R7091 repaired the set RCA\CTC169\CONVERGENCE BAD & CORRECTION CONTROLS HAVE NO EFFECT\\\\REPLACE Q8132 SHORTED BASE TO COLLECTOR LOCATED ON CONVERGENCE BOARD & R8184 RCA\CTC169\Convergence poor\\\\Q7013 RCA\CTC169\CONVERGENCE BAD & CORRECTION CONTROLS HAVE NO EFFECT\\\\REPLACE Q8132 SHORTED BASE TO COLLECTOR LOCATED ON CONVERGENCE BOARD & R8184 RCA\CTC169\HOURGLASS SCREEN* TOO WIDE\\\\Q4802(200168) Joes....Electronics �(Joe:Tech/2004) [EMAIL PROTECTED] Fax::509-479-2283 ================================= [EMAIL PROTECTED] From: [EMAIL PROTECTED](mgodar) Date: Wed, Jun 2, 2004, 2:57pm (EDT-3) To: [EMAIL PROTECTED] Subject: [Techs] rca Model p46770ck ctc 169paas full raster with curved pic. Reply�to: [EMAIL PROTECTED] (ELECTRONICS PROFESSIONALS LIST) Hello We here here a Rca ctc 169 with a full raster(no margins).Picture is curved in on all 4 sided Placed a cross hatch generator pattern and you see the lines curved up from the bottom and curved down from the top The sides are also curved in. Pincushion IC ? ��Mike Godar Electronics World Class Antenna Manufacturer Electronics service DIV.......... http://users.mcleodusa.net/m/mgodar 339 north Gilbert rd Gilbert AZ 85234 USA (480)892-8207 ______________________________________________ Tech Repair CD...order your just $49.00 plus shipping...One year of updates free. www.intrepid-video.com www.tech-repair.net Techs mailing list [EMAIL PROTECTED] http://intrepid-video.com/mailman/listinfo/techs_intrepid-video.com _______________________________________________ Tech Repair CD...order your just $49.00 plus shipping...One year of updates free. www.intrepid-video.com www.tech-repair.net Techs mailing list [EMAIL PROTECTED] http://intrepid-video.com/mailman/listinfo/techs_intrepid-video.com
