I couldn't help myself. Had to see if I could get one up and running.
I dismantled the PC PSU, as the cooling fan was clogged up with dust. A quick blast of it and the mother board took care of that. Bench tested the PSU for correct voltages, plugged everything back in and waited for a bang on power up.
Both plasma’s don’t work. Tick, tick, tick, so hoping to find dried out screen PSU capacitors, when I take one apart over the weekend. Only other LCD I had, was a 15” VGA desktop screen.
 It does have a serial input on screen, but I can’t see a touch screen glass (definitely not IR), but will find out upon dis-assembly. If it does, that’s a mother of a touch screen glass 
Machine powered up first time. Operates in Windows 98 and takes about 2 mins to get to main menu. Still can’t believe the motherboard battery held its charge.
Only three pinball games, but does have some other arcade games.
The el-cheapo PC speakers actually pump out some great sound. A constant music file that runs in the back ground whilst idle and has heaps of speech during game play. Can’t wait too see the table on the 42” screen?