My Neo-Geo has no picture. I think the only prob is bad monitor PCB. I tried to "do-it-myself" with a new cap kit and new flyback transformer, but it didn't work. Willing to pay somewhere around $30 - $50 depending on amount/type of work required to fix this (as I said, the caps and flyback are still brand new so you shouldn't need to buy parts I wouldn't think). The black wire from the flyback needs to be crimped to plug onto the neckboard also.
At work so I can't look up the monitor name right now, but it's a 25" Wells Gardner with a Zenith Picture Tube. If you are interested, I can supply additional info later.
I'm located in Azle, Texas (near Fort Worth).