Again, thank you H3nry for your assistance.

I've tried Mode 5 VGA 640x480 - separate sync. Result: green screen. I've tried Mode 5 on other resolutions: same old story. Either no image or green screen. I have even found another DB15/VGA adaptor with 6 dip switches and tried all the combinations with that one, too: same results as before.

I'm starting to think that there's no way to establish a nice relationship between my Quadra 950 and that monitor.

This morning I also found a RasterOps NuBus video card and inserted in one of the free slots, but I guess I'll have to find some kind of extension/control panel to make it work properly. The card is detected by the usual Monitors control panel, and I can set different colour depths and resolutions for the two cards (the Quadra thinks there's another monitor connected and displays a dual monitor arrangement in the Monitors panel), but every time I connect the monitor to the video port of the RasterOps card I get no image.

This is getting quite frustrating and it's starting to eat more time than I expected. I guess that I'll have to keep the old Apple 14" Colour Monitor for the Quadra (grr... only 640x480) and use this bigger monitor with the PowerMac 9500. :-/

Cheers

Rick