Tube swap definitely! I bet most 28" TV tubes would work. Philips and Videocolor are the two most common tubes in TVs here. Polo 2 is around 1.40mH horizontal I think, that's a normal TV tube yoke. Intervideo is likely the same.
What size tubes are in those namco machines...25" or 28"?3-4 weeks sounds more realistic.
The 2 player one that was basic dead was a Thompson A66-something..I forgot to write it down. Player 1 had no tube sticker, so don’t know.
Would be fun to try a tube swap! Any suggestions @nem?. Not a lot of CRT available here in Norway anymore.