Question about RCA Televison & Video
The color was 3d and now the tv will come on occasionally but mostly just show 3 fish eye lines or not come on. will the convergence fix kit solve the problem?
CA CTC111C: "adjust the center set of magnets to
converge blue to green at the center of the screen. Adjust the rear set
of magnets to converge red to green at the center of the screen." Your
set may have a slightly different procedure.
Dynamic convergence adjusts for coincidence at the edges and corners.
On old tube, hybrid, and early solid state TVs, dynamic convergence was accomplished with electronic adjustments of which there may have been a dozen or more that were not independent. With modern sets, all convergence is done with magnet rings on the neck of the CRT, magnets glued to the CRT, and by tilting the deflection yoke. The clamp in conjunction with rubber wedges or set screws assures that the yoke remains in position.
From the Sams' for the RCA CTC111C: "Loosen the screws at the 6 o'clock and 10 o'clock positions to permit the yoke to be tilted vertically. Rock yoke up and down to converge the right and left sides of the screen. Tighten screw at 6 o'clock and loosen screw at 3 o'clock to permit the yoke to be tilted horizontally. Rock yoke from side to side to converge the top and bottom of the screen. Tighten screws at 3 o'clock and 10 o'clock."
Many sets simply use the main clamp which locks the yoke to the neck of the CRT in conjunction with rubber wedges between the yoke and the funnel of the CRT to stabilize the yoke position position.
Refer to your service manual. (Is this beginning to sound repetitious?)
For additional comments on convergence adjustments, see the sections: "Tony's notes on setting convergence on delta gun CRTs" and "Saga and General setup for large CRT TVs".
Posted on Jun 28, 2009
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Posted on Jan 02, 2017
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