Question about RCA F36669 36" TV

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RCA CTC203 Replaced HOT, Flyback-solder coil and Hor Driver-set powers up and audio w/pix-have "jail bars" on left of screen-(about 4 or five)This set was given to me. I never seen it work.?????? Thanks ,Wayne

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With your new flyback transformer ther should have had a resistor and cap in the kit.if you look at the fly back from the rear ,on the right side very close to the transformer.and on the other side 3 resistors one has changed value about 38k-ohm.

Posted on Mar 28, 2008

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The F27669 uses the CTC203 series chassis. The most common cause of that symptom is a shorted horizontal output transistor, caused by a cracked solder joint on a small coil connected to that transistor's base. When this happens, the main B+ supply is shorted to ground so the power supply squeels. Every once in a while I also see the horizontal output transistor shorted due to a shorted flyback (high voltage) transformer. A good tech will replace the horizontal output transistor, resolder the coil and drive transformer, test the flyback (replacing it if necessary) and your set will be back to perfect.

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1 Answer

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The F32668 uses the CTC203 series chassis and I usually see 2 problems when the set will not run. The first is poor solder joints on a small coil near the horizontal output transistor, but if thats the case the set tends to run for a while and randomly shut off. When the set clicks and never runs I usually find that the flyback (high voltage) transformer has shorted out inside. In this case the flyback should be replaced by an experienced tech.

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The GE (actually RCA) 31GT740 uses the CTC203 series chassis. The first thing I would do is resolder the coil on the base of the horizontal output transistor and the pins of the horizontal drive transformer, as well as any other solder joints on the main PC board that look weak or cracked. 9 times out of 10 that cures the symptoms you described. If you do not have experience soldering parts on PC boards then have a qualified tech handle it for you.

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1 Answer

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