Another thing I just thought of...when old Macs run at 640x480, they traditionally like to run at 67 Hz (the refresh rate used by a lot of Apple displays). This works fine on just about all the VGA CRTs that I've tried, but I'd hazard a guess that some VGA LCDs may not like it, so maybe that could have something to do with it. In the event that that is the problem, your only two choices are to either use a CRT, or get an adaptor with DIP switches that can force the Mac to run at 60 Hz.
Post #10 by LCGuy
| Source Forum | 68kMLA |
|---|---|
| Category | Hardware |
| Post Date | Thu, 9 Jul 2009 - 02:19 |
| Original URL | https://68kmla.org/bb/threads/performa-6214cd-not-outputting-video-to-a-vga-screen.17888/ |
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