"Do you recall what exactly it was that kept blowing on all the Tempest machines? I was under the impression it was some highly-stressed part in the vector display, but not exactly sure what."
If you figure it out you can come over here and fix my Star Wars stand up...

It has the messed up display which I am told is definitely a capacitor or something relatively easy to fix. I have no skills with a soldering iron.
Anyone in the greater Seattle area know a good place to get arcade machines fixed? The one place I know of has been in the news for shady business practices...