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  1. jdmcs

    Which Macintoshes, NuBus Video Cards Only Do “Sync on 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...
  2. jdmcs

    Generic IC Cross-Reference for "Proprietary" 8-Pin ICs Used in Macintosh Power Supplies

    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...
  3. jdmcs

    Staff Bio - Justin D. Morgan (jdmcs)

    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...