Television and Home Theater

i have had this tv for about 3 years now. about 3 months ago i lost the video but not sound from the front inputs(the only s-video input) i switched reg. video input on the front inputs and still had no video but audio was still ok. i switched to the video and audio inputs on the rear and it has worked fine for the last three months. today i turn it on and guess what?  NO VIDEO!! audio still ok.

I just replaced a lamp for my  Akai PT46DL10  the greenlight comes on  tv works fine then after 1 minute the red lamp light comes on and stay on is that normal?

having a hard time finding c515, 516 on cir. board need help finding service man. would be great if any one could email me one  thanks