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The Higher Intellect Vintage Wiki states that the IIci shares video chips with the IIsi, and this may need a sync on green monitor: https://wiki.preterhuman.net/Macintosh_IIci Chris Xodium’s Retro Haus on YouTube didn’t want to go out to his garage to get his sync on green monitor to test his...

Turns out I have several and didn’t realize it because I thought they were too new. I had grabbed some Dell LCD monitors they were scraping at work and their data sheets say they do sync on green. If my IIci power supply wasn’t currently disassembled for re-capping, I would put it to the test...

Which Dell monitor is that (assuming you're not using some sort of adapter to separate the sync from the green)?

Based on information that I found online, the on-board video on the Macintosh IIci and Macintosh IIsi only support “sync on green” mode, which is a problem if you don’t have a monitor/scaler or other video device which supports this mode. Well, I have a IIci, but nothing old enough to do sync...

In my IIci power supply, the mystery chip is simply labeled “0600” with a date code of “9011J”. There’s no manufacturers name or mark on the chip.

I have a Macintosh IIci with an Astec Power Supply. During my last livestream, someone asked me if the power supply had the "infamous" daughter board... to which I had to answer yes. I think they mentioned it was due to the op amp on the board... or was it an optoisolator? I was trying to solder...

First Mac: LC First Owned Mac: Performa 5215CD (don't judge) Favorite Mac: it's a toss up between the iMac G4 and the PowerMac G4 FW800 Strengths: I break things Weaknesses: SMD soldering, desoldering, eBay, home-cooked food Hi, my name is Justin D. Morgan, but you can call me Justin. I...