Television and Home Theater

I have a panasonic 52"HDTV...this just happened yesterday....when I turned it on the picture dosen`t come on..it is hooked up to a JVC 1000 watt home theater systom

My four year old locked the tv and I can't get it to unlock. The tv is a philips/magnavox, the model is TS2746C101 and the chassis is 27f800 7583 what do i do? I tried all the four numbers I could try. Can you help?

Hitachi 61" Ultravision Big Screen HDTV Convergence problems?(Hitachi Projection Color TV-61UDX10B) I was researching your site and convergence sounds like what our problem is. Our big screen is only 4yrs old and we are getting red and white lines around images. It almost looks like a ghost or that the set is out of focus. It is mostly on the right side of the screen. Sometimes faces have a bold red line along the outline of the face and arms on the right side.Sometimes it looks like a red ghost is ontop of the picture making it appear that two people are there.