Recently acquired a Centipede Cocktail, S/N #312 so it was an early unit that had a hard life with lots of parts replaced. But it worked, so I did a cosmetic refurbish along with a full recap on all boards, rebuilt the trackball, and got it physically looking and playing great. Centipede was always my favorite golden-era arcade title, so it's funny and neat that this fell into my lap as my first arcade machine!
Buuut (of course!)...
Long story short, the 14" Matsushita / Atari monitor is shot.
Long story shared: when acquired, it had major convergence, purity, and tracking issues. In fact it wouldn't even display a picture but I got that sorted and went from there. Did a full recap which helped, then adjusting convergence and such helped a little more... but ultimately illustrated the green gun was incredibly weak. Red and Blue on their lowest settings were way above what green would output on max! Had to set tube brightness nearly max just to even see green, which then caused scan lines and other issues. Green was so weak you still couldn't converge to colors like white or even yellow, and if a room light was on nearby you couldn't see any of the "green" at all.
For diagnosis & troubleshooting, I swapped the drive transistors, then pots... no change. So I called a local-ish collector with decades of experience in arcade CRTs. He used a Sencore tester which confirmed the green gun was in fact extremely weak. So we ran the rejuve process, knowing the risks and caveats. And wouldn't you know it, the R and B turned out even more vivid than before! But now G is completely dead. Gone. Nothing. Made to black. There's other issues with this monitor too, that for brevity I won't get into so, bah: Probably need to cut my losses and find a new CRT to swap in.
But I've no idea where to begin seeing as how they're scarce these days.
Hoping somebody here knows a source (preferably nearby?)... or maybe has one to part with? Not looking for pristine perfection: just something with all three colors in balance, etc. And yes I can try recapping, converging, etc, if you have one that needs it and don't want to fool with it. Just needs to be a 14" to fit the cocktail cabinet.
Or maybe you know a miracle means to fix what I have but my understanding is that it's likely a fool's errand.
(If anyone needs a 14" Atari/Matsushita chassis, freshly recapped and verified good, LMK...)