Color fades in and out of picture

Question

I have a 27 inch Philips TrueFlat Analog TV. Recently, while watching TV, the color will simply fade out so that the picture goes to black and white. You can still see the tv program fine it just is in black and white instead of color. Sometimes the color will come back on its own but sometimes it won't but if you change the channel and the color comes back right away. I am assuming that something is partially failing. Can you let me know what might be the problem and if it is something that I can fix myself? Thanks.