help! light-six 2600, sound but no video

Hi everyone,

I have a 2600 that has been sitting in a box for a couple of years.  I took it out and fired it up and it was awesome...until the video went out.  I now have sound, but noooooooo video.  While I am perfectly capable of taking my atari apart, I really don't know what I should be looking for.  Are there parts that I should jiggle?  Are there things that I should take out and put back in?  I tried to search the archives, but I don't really even know what I am looking for.

So if anyone has troubleshooting suggestions, i would be greatly appreciative!  I am without electronic equipment, but can walk to a radio shack if I need to pick up a multi-meter or something.

Thanks all!

david