I got my chassis back from Arcade Cup a couple weeks ago and when I installed it, I realized I had no red in the image and the green was waaay too bright. I tried a different tube and still got no red (one of which I accidentally necked afterwards...). Personally, I thought I just had two bunk tubes. Tonight, I rip a decent tube out of a junk cocktail I picked up yesterday and knowing full well it had all 3 colors. I swapped it in tonight and what do you know, still no red. Adjusting the red drive and red cutoffs make no change in the monitor. Needless to say I am very frustrated and this will likely be the last time I even dare working on these God-damn shitty-ass 4600 monitors (I had two fail right before I sold two games and I royally despise them and everything they stand for), but is there anything else I can try before sending it back for re-repair?

