IBM PS/2 Model 25 CRT - No High Voltage

[uxwbill]

Originally Posted by Electronic M

If the monitor supports resolutions other than 640x480 it may run at slightly different frequencies than 15.7khz.

All the PS/2 Model 25 display assemblies are VGA only, even in the case of the 25SX, which has SVGA graphics hardware and a cautionary note in the manual not to exceed 640x480 at 60 Hz vertical/31.5 kHz horizontal.

When working and with no signal input connected, all PS/2 displays should show a white raster (provided the brightness and contrast are set somewhat appropriately).

I'll defer to others who have more experience here, but you may want to use great caution poking around directly at the HOT, for the sake of your test equipment.

The built in color monitor is roughly similar to the Taiwanese-made version of the standalone IBM 8513 color monitor, and the monochrome variant to the IBM 8503.