Except for the rare exception, consumer TVs are not directly compatible with arcade game video feed. Trust me, the arcade community would be all over this if it were that easy. They have (as I think I stated somewhere earlier in this thread) found where you can swap in a tube from a consumer TV to an arcade monitor chasis but that has its own compatibility requirements and also isn't an operation for the faint of heart.
actually its quite easy to do a tube swap. there are youtube videos showing you how, there is a web page that tells you what tubes are compatible. I just swapped a 25" last month. if you can open the tv, thats the hard work. Metered the yoke and and it was correct for k7000. all I had to do was transfer the tube and swap the yoke connector. went from tired tube to perfect picture.
basically, any tv set you find from the 80's to mid 90's is a good candidate for a tube swap.
using a tube rejuvinator also works. but you can kill the gun if your not careful. But its generally a tool of last resort. you are taking life off the tube using it. So there is a tradeoff. sencore makes a more automated rejuvinator, but I have never used it. I have a bk 490 with pretty much every attachment to do tubes.