Only get half a picture on my RCA television. only getting the bottom half of the picture

Half black? top/bottom or left right?

The set is rather old--a old trick to use is to connect a fan to the rear of set with the back off--it may extend the life of the set and give you some more use out of it.

I have seen a lot of these sets and never one with the problem you describe. If only a picture top or bottom is missing it may be vertical or if you are seeing what looks like a full picture with top or bottom black it is a Blanking problem--may not be easy to find...........

This is commonly known as a vertical deflection problem. It cannot be fixed with an adjustment, but requires changing some electronic components. Namely the vertical output IC (integrated circuit) and in addition usually in this model a resistor which may appear to be burned.

The problem is in the vertical output ic, located near the high voltage transformer, "heat sinked" the pins need to be resolded or the ic replaced along with two or three capacitors. If a professional gets involved I recommend an estimate.

It's not an adjustment.Chances are it's your vert. output i.c.or a surrounding component.Chip # is TDA8172.

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.

You have vertical output problems.There is distortion at the top because of a faulty vert. output i.c. or a faulty electrolytic capacitor.It's possible there may be a problem at your yoke also.It needs a professional repair.

unplug overnite.

Replace the scan drive board also called X-sustain board. This is the board on the upper left side in the back of the set with a huge heat sink on it. you can find them online for about 175.00. The p/n is pkg50c2g1. Be carefull with the 4 ribbon connectors that go to the display.

The convergence circuit is your problem and most times with this model the convergence power supply bd. is the problem.

get an estimate to fix your convergence problem