My RCA F27442 dosen't any picture put it dose have sound what can i do

Have you tried changing TV channels to "03" or "04"? for external input.

you have the problem in the heater try to resolder the parts in the crt socket the one that is connected in your picture tube if nothing happens check the resistor if open replace it common value is 5.6ohms.

Coil L14401 is not making a good ground. Remove him carefully, scrape the ends clean and the board where he was removed. Now reinsert and resolder this little guy,and Bingo you have your TV back. This is a common problem with your TV! Thanks for asking!

yes!!!! very common problem. soldering the vertical section and the grounds around the tuner section will fix it. guaranteed fix. for a quick fix, take off back and while tv is on, take the plastic side of screwdriver and tap tap tap the tuner section. see i told you that would fix it.

Although your picture is perfect, I would think the fine tuning is slightly off. This can also be to do with the cable box frequency setting. Call out the cable people & get them to check the box & the setting up to the TV.

We Start tv Then Sound come But Picture Is Not come

You have a bad flybacktransformer. This is what is causing the popping!

check to see if you have B+ to the horz.output transistor.
also you may have bad solder connections on the countdown osc. ceramic resonator.

you may have bad solder connection in the horiz.countdown section.
you may also have a GEM Star module bad.

The TV does not have a reset button. If you have no picture and no sound, there is something wrong with the chassis. In this case the set should be serviced by someone experienced in the RCA CTC203 chassis. If you have no picture but do have sound, then it is possible that the 2 controls in the 2 little holes in the back of the set are not adjusted correctly. This is quite possible since you said you put a screwdriver in there and got a fuzzy picture. The control on the bottom is called "screen" and is the overall brightness of the picture and the control on top is called "focus" and is the sharpness of the picture.