[vcf-midatlantic] Mac IIci, dead (PICS!)

David Riley fraveydank at gmail.com
Fri May 14 12:10:38 UTC 2021

On May 12, 2021, at 11:39 AM, Ethan O'Toole via vcf-midatlantic <vcf-midatlantic at lists.vcfed.org> wrote:
>> "screen is black, monitor wakes up" decrypts to "maybe my VGA monitor is showing there's a signal, but it doesn't display it". That may be correct! The Mac has a video connector which needs a quote "Mac to VGA adapter" which mechanically rearranges signals but does nothing to them. The IIci native video, is *not. VGA. compatible.*. The native IIci video (on mobo) however, will never EVER run a VGA only monitor.  So it's possible the IIci is producing a video signal.
> Yep yep! I have one of those Mac DB-15 to VGA adapters. Actually a few of them. And the LCD I'm using which is some crusty 15" thing that clocks to ANYTHING goes from No Signal to black screen when it's powered on.

Does it handle Sync on Green?  I found out the hard way that the IIci's built-in video is SoG ONLY, which was a big surprise to me.  Fortunately, I had one LCD that handled SoG, but it's fairly uncommon these days.  The wire-only adaptors (even the excellent Griffin MacPnP) don't convert SoG because it generally requires active conversion and thus has to be powered.

- Dave

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