TV Screen Turns Orange

The picture screen was fine for several years. All of a sudden,recently after 5 minutes of turning the TV on, the picture screen turns fully orange. The volume can be heard, but not the picture screen. Can you possibly diagnose the problem. Could it be the red bulb, a combination of bulbs, the convergence. If you happen to know the part(s) or if I can use the remote to adjust, any information would be greatly appreciated.

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