I tried a replacement monitor: JVC TM-H150CG High Resolution Color monitor.
I support surface mount manufacturing in Kokomo, Indiana USA. Hopefully, the following clarifies some questions posed earlier. I appreciate all of you suggestions and feedback. Old CRTs are so cheap, I would seriously consider wiring one straight to see if it works before doing anything complicated and costy. A linear amplifier with variable gain could be used to shift signal level if needed, I guess.
People that actually know something about analog circuitry will probably be able to indicate the best way to ensure signal clarity and level. An LCD would have the advantege of probably having an integrated frame buffer, eliminating the probable flickering you will get with low definition/low refresh rate on modern monitors. Might be worth checking whether a cheap flat panel would do, as they will be a more futureproof option and it might please your customers to have clean new hardware. You should be able to find those for next to nothing. The good news is that pretty much any crt from 1997 will fit the bill. Mind you, you probably are going to have to find multisync CRTs to be able to do that (and they are not produced anymore), as I do not believe LCD accepts anything but a very limited subset of refresh rates (apparently 50 and 60Hz is alright on most panels). The standard analog PC monitor interface is RGB+sync, I cannot see a reason but signal level for it not to work with your signal. You might get away with getting just a 9pin to 15 pin vga adapator, or building it yourself as described on 9 to 15 pin VGA cable pinout and wiring VGA (VESA DDC) pinout and wiring gives pinout for a standard VGA interface. Hopefully, one may be able to recommend conversion hardware or a different, less expensive tv monitor. However, I need to replace 4 monitors immediately and stock one spare for storage. The replacement monitor is the following: Input (JVC tv monitor): SMB to BNC adapter to "Video Line A IN". Output (machine video card): SMB connector on G output only VENDOR RECOMMENDATION TO REPLACE OBSOLETE TV MONITOR: utilize JVC 15" color, model TM-H150CG Input (obsolete tv monitor): 9-pin D-shell Output (machine video card): Discrete R, G, B, S with SMB connectors I hope I can discover a cheaper solution! The vendor's solution is to purchase a JVS monitor for $1500. Out of 6 tv monitors, 5 are no longer working. The vendor (based out of Eindhoven, Holland) no longer supports this model and cannot offer any technical help. This monitor accepts R, G, B and S inputs from a proprietary video card. I support a chip placement machine that utilizes a 14" tv monitor (which is now obsolete). I fear I won't have enough detail, but I figured I would take a chance and seek out sharper minds. I wish to convert from RGB (with one, separate sync) to VGA video or anything "off-the-shelf".
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