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Home▸ Forums▸ 68kMLA▸ Macintosh IIci motherboard no video — #5
Post #5 by Charlieman
Source Forum68kMLA
CategoryHardware
Post DateMon, 3 Aug 2009 - 21:44
Original URLhttps://68kmla.org/bb/threads/macintosh-iici-motherboard-no-video.18136/
Post
There are lots of possible problems here.

System RAM needs to be fast (off the top of my head 80ns -- correctly guessed) and 2MB SIMMs don't work. You have to have functioning RAM for the Mac to boot enough to display anything on screen -- there's no VRAM.

The monitor has to sync nicely with the IIci built-in video card. Few monitors do.

For feedback on booting, you should get some indication just by putting your small fingers on top of the disk drive. Or try booting from a floppy disk -- anything with a system file should give audible feedback from the floppy drive.

mp.ls