Television and Home Theater

  I have a Toshiba CZ36V51 television that is eight years old. The picture has  been cutting out and the red power light will blink. A good slap will sometimes bring the picture back. What could the problem be, how much will it cost and is it worth it to repair this? Thanks

Panasonic Cinenavision Progrssive, Spatializer 3-D Stereo big screen (45"?) TV is about 10 years old,works great, except it keeps changing channels.  When I'm watching tv the channel will change from 3 to 4.  Also, when watching a DVD  the input changes so I have to change that back to the previous location (tv/video button).

Any suggestions as to what the problem is, and if this is repairable?

Thanks so much.

I have a phillips 46 inch big screen that has a red rainbow going through the bottom of the screen...is there a way i can fix this myself or do i need a repairman?? Model number 46PP9302

any feedback will be appreciated