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Replace or resolder your convergance IC's. What is a common problem is over time the heat emitted by the chips weakens the solder joints on the circuit board. If your lucky just a resolder job is all it needs.
did you install the correct color wheel? Most of the samsungs had retooled bearings in some color wheels and often a jumper has to be installed for the color wheel to work properly. Your wheel should be a BP96-01103A another thing that can happen is the thin brown ribbon cable can get plugged in backwards and will prevent the color wheel from working also. That ribbon only has contacts on one side of the ribbon. I would double check that if the correct color wheel was received for your model.
To get it absolutely back to normal you would have to remove the casing and re-align the inner workings. The only other option would be to go to your menu and adjust the settings, to return color and images to as close to normal options.
These sets are famous for bad picture tubes. It is normally either the blue or green tube that goes out in these. One way that you can usually tell, is to gently tap the neck(the glass tube at the bottom of each of picture tubes) w/ the handle of a screwdriver while the set is on and see if that will make it act up. If it isn't that, then there may be a loose connection somwhere on the board. You can also tap around on the boards to see if the problem occurs to find out if it's a loose connection. A picture tube will be costly if you can find one. They are hard to find and to change. You may need to get a tech to give you an estimate and see.
Thats the screen controls. To adjust it turn the color level down to zero, Then adjust the 3 knobs by balancing them to where the best black and white picture is acheived. Then turn the color level up and that should do it. Just be careful not to turn the settings too low or the CRTs will refuse to light after the set gets turned off. If that happens you will need to turn each adjustment up a little and the CRTs will relight then you will need to adjust it more. If you cannt get a good black and white picture you will need to replace the Coolant in the CRts.
I have owned this model for 4 years now. 2 years ago this same thing happened to me. I think the repair man said the transformer went out and he replaced that. It has happened to me again so I will try and do this myself, and let you know if I succeed. This TV has been terrible, I will never buy hitachi again. If you ever use an hdmi cable the tv does very weird things like changes color or distorts for about 30 secs then goes back to normal. P.O.S.
You are missing either red drive signal to CRT or you have a cold / fractured solder joint on the television. Also with the set unplugged check with a non metalic object like a ruler or a wooden spoon and start tapping around in the front or back of set and see what happens. See if you can narrow which area of the set has a problem... Good luck future technician.. Happy holidays.. Jay
Since this happens after the set warms up, I would check for bad solder connections or capacitors on the convergence board. If the problem was not readily apparent, then I would consider replacing the board, as I believe the replacement board has been upgraded from the original.
I think you have a regulation problem and all the voltage supplies are lower than what they should be,the fact that the picture gets distorted is one thing it lead me to believe that is the problem.This can be caused by a loose conection in the power supply ,I would suggest not to use it until it gets repaired or it might become worst and more expensive.Be careful if you remove the back and try to repair it yourself.