Focus Problem in Goldstar CF-29C37T TV

Though the picture problem solved, it still have one more problem which is focus out after on for sometimes. To find out if the flyback, crt socket or picture tube that cause the focus problem i use the Kaise high voltage probe. Unplug the focus wire and switch on the tv and start monitoring the focus voltage with the high voltage probe. In less than 10 minutes i can see that the high voltage slowly rised from 11.5kv to 13kv! If i continue to let the tv on i can expect the high voltage could reach 14kv. Due to the increased of focus voltage the picture slowly getting blur. Since i do not have a new flyback with me i add in a monitor blur buster to try it out. The monitor blur buster i have tested on thousands of monitor but not on Tv. You will be amazed that it actually worked in tv also. The picture looks normal and sharp even after i switch on the tv for hours. I was quite surprised to see a tv became blur as to my knowledge the tv flyback voltage divider normally can last very long as compare to monitor. Maybe this is an old tv and the flyback give way sooner than it should be. Imagine if you do not have the high voltage probe, you will be in the guessing game as which of the components that breakdown after sometimes!