Picture on tv keeps going out and coming on

hi
problem could be a bad cable connexion or a
intermittent tuner but first you have to eliminate the cable connexion probability

pls check your tv. cabel input pin or atached canaction is not proper.
1. cabel pin Out from the tv set and check pin canaction is proper.
2. if use setup box . check RCA pin [A/V] or cabel .reset the canaction.
3. all cheenal set with Auto Cheenal Serch properly.

If the previous posts didn't fix youru problem, and I doubt they did, then you most likely have a weak CRT and the video is being muted. you can sometimes tell if that's the problem by turning up the screen voltage slightly to see if the picture comes back on. If it does, then the CRT is weak. This is a very common issue with Sony CRT TVs, and can sometimes be rejuvenated by a good shop for fairly cheap.

Best solution to solved this prob.U know how to solders?Take the tv aparts hit the video board.The board connected to the CRT tube long neck.Hit the board with a back of handle of a screw driver,where the video fades flashes resolder it well solved this prob.Solder the pins sockets holes connections to the CRT neck too.