CBM 8032 display CRT replacement

Basically, the following have to match between the old and new CRTs Deflection angle (almost certainly 90 degrees) Neck diameter Pin base Heater voltage. My experience is that small monochrome CRTs come in 2 classes. Those with a thin neck, modified B7G base (like a 7-pin miniature valve, but with the seal-off tube in the middle) and 12V heater. And those with a thicker neck, B8H base (8 pins in a circle with a plastic keyway thing in the middle around the seal-off tube) and a 6.3V heater. The former is more common in classic computers and also in portable TVs. I have seen a few of the latter in computers, though. So if you get the right base and thus neck diameter, the yoke will fit, the base connector will fit, and the heater voltage will be right. The other electrode voltages (BTW, the pinout seems to be pretty much standardised within a classs) are much less critical. You'll get _something_ on the screen, you may have to tweak things a little to get it perfect. -tony