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Old 11-17-2021, 05:28 PM
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TinCanAlley TinCanAlley is offline
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Join Date: Sep 2008
Location: So Cal, CA
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Okay, I finally got a monochrome video adapter after 2 failed attempts.

The IBM 5151 monochrome works like a charm w/no burn-in and only a scratchy brightness control that deoxit should fix.

The Canon isn't displaying an image, but it is doing something odd. I am used to it not displaying a raster with no signal, and the flash of a raster upon turning it off (the raster shows up and then collapses to the bottom of the screen. However, when I turn it off while connected, the shutdown raster contains the image of what it should be displaying while on. Does anyone know why it won't display the image? What part of the circuitry should I be looking at? I'm guessing the signal is there, but not triggering the HV to display it, and when I shut it off, the shutdown circuit that kicks in and drains the HV causes the image to be displayed. Why? Now that part is beyond me as I have never seen such behavior before.

Thanks!
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