Yeah if you get a vga 31k only monitor you will only be able to play a select few systems which are 31knative like atomiswave & naomi. Most arcade games like cps2/3 are standard res at 15k. So you need a scaler if you want to play those games on a 31k ms2934 chassis. However Its likely your...
Err on the side of caution and find out. Did the monitor do anything strange before failing?
There is a chance that the nanao tube in the NAC is a drop in replacement in which case you need to find a new chassis or keep the 31k chassis and get a scaler like Notsonic said
Both those monitors are probably going to need to be reverse mounted in your blast city. Im assuming the tube from the naomi/astro is an ms9 tube with probably a ms9 15k standard res chassis or a 2932 with a 31k only chassis. Im not familiar with the phillips monitor but nos arcade monitors...
In my experience KC isn't taking any losses to make things right for a customer. The tosh pure flat is the same one found in the New net. I have seen the tosh pure flat chassis attached to an ms9 tube it looked marvelous. I would assume the reverse is also true but you do need to make up...