Television and Home Theater

I have a JVC Model AV-2771S. While watching the TV, it suddenly lost proper colors. A lot of green and no reds at all. I tried to adjust color without any success. All people look seasick on screen. Is picture tube gone?

Hi

I just bought this RCA BD20TF10 TV-DVD Combo.
When playing a DVD, there's no way to change the quality of the color which appears dark and red. There is a display settings in the DVD menu, but you can't find the way to do it. You can do that in TV mode, but the preset won't stay when changing to DVD mode.
On the other hand, the Glossary menu describes how to do that from the Display menu, but the option is not there...
The instruction book doesn't say anything about it either...it's so strange
Any ideas?

I am working with a Magnavox projection TV, model 7p5433, ptv775 which when power is turned on the power light come on then goes back off, of course there is no raster or sound, please advise,