Quoted from Isochronic_Frost:
Bad shape?! It’s dirty for sure, but I don’t see any major damage. The metal ramp is ugly but most of them get beat up and Marco has the decals for it.
Cabinet looks good, the display is most likely the aging HV circuit is failing as all the Data East’s are experiencing at this time. The caps are past their lifespans, rebuilding the HV will most likely fix it.
If the display stays on after a certain “warm up” period then that’s a dead giveaway. However a bad high voltage can also appear as if the display is outgassing.
I was able the measure the 100v output and view it fluctuating rapidly and not staying at a solid 100v which was the sign the display is good.
The display will look great briefly and flicker to being bad the vast majority of the time. The bottom display hasn't shown any signs of life yet.
I still haven't figured out the "Ball Missing" issue. Someone on FB suggested a bad transistor, but that's beyond my knowledge. The other two switches associated with the 3 through switches on the same transistor all aren't registering. So I think they may be correct. But I can't figure out how to test that transistor yet.