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i am not sure these is going to work but give it a try.
after useing the tv for a long time you can get a problem with the lineing of the three picture colors may drift away from each other causeing the problem you have, they move because of moveing the tv or the viberation of the tv. you can to one of two things if you have a remote for the tv go to the menu and look for the convergence adj. setting then you are going to get close to you tv and press the small but the says the same thing now on the screen you are going to see a grid the you can fix youself with the remote just by pressing the up, down,left, rigth buttons and the menu button to change the color, to aline the red line and blue line with the middle line till you get only a white line going up and down if the doesn't work just unplugg th power cord and what for about 4 hours and then plug it in and turn it on again. if after you do all these if you still have the problem then you either have two choices call to see how much it will cost to repair it or toss it out and get a new one
The problem with your unit is that when your tube was replaced, it was not degaussed or demagnitized. The purpose of such is to distribute the color evenly unto the entire television matrix.
You can try to demagnetized it by rotating a magnet around the surface( but not so near) of the picture tube while it is operating.
Also, please check for the degaussing coil around the rear portion of the tube was returned and also check for loose contacts.
The picture tube on a TV can be magnitized by the Earth's magnetic field. The noise heard when you turn a TV on (usually followed by a static noise on the face on the TV) is called degauss. What this does it remove any magnetic variations on the tube due to things like the magnetic field and speakers. However, changes to the TV in orientation to the Earths magnetic field will cause the tube to have a magnetic bias. This is most prominent when turned 90 degrees. The easy way to clear this is to turn the TV off for a little while and then turn it back on. But remember that any movement once it is on can cause the discolorations to reappear. My suggestion would be to turn the tv after you've moved it to the location you'd like to view it.
your tv has a vertical problem take it to a tech to have them look at it probably on transporting the set to your house it bump around.a look on lose solder could be the problem this could be verified by a tech.good luck.you need the repairman.