OK I've been following this thread for some time, and have one question in particular:
I've got a cab with a 15kHz monitor that I've fixed up, which cost me next to nothing. I'd love an ArcadeVGA, but to be perfectly honest it's a little expensive for my taste.
I've managed to configure a linux install to boot into a 15kHz frambuffer mode using an old card (the easymamecab site documents this quite well). So everything from when the kernel gets loaded onwards runs at modes the monitor can handle fine. I'm using AdvanceMenu and AdvanceMAME, so no problems there.
My question is, what is the potential damage that those few seconds (and I mean definitely less than 10) of the BIOS and POST screens can do to my monitor? Obviously it's being fed a >15kHz signal, even if it is only for a few seconds. Am I seriously reducing the life of the tube?
If so, then I'll save my pennies and go the AVGA. But if not, it's not an expense I care for, as I can do without for 99% of the things I've configured. This is definitely not a criticism of the card, nor Andy. It's just in my current situation money is a little tight, and if I can save a few bucks, it would make a big difference.
I guess if all else fails, I will probably just have the monitor on a separate switch, and wait a few seconds after I hear the post beep before turning it on manually.