croissantking
Well-known member
Spinning off from @bigmessowires thread about DIP switch adapters, I am trying to get my 15AV to work with my Macintosh IIci. According to the service manual that's freely available online, this monitor should work with any II-series Macintosh without an adapter. @Phipli, I believe you also confirmed this.
This means that this monitor should be compatible with the composite sync singal put out by the II-series' onboard video.
When hooked up to the IIci, the monitor remains dark. I have tried using an 8-pin adapter set up for a 13" RGB display, and am confident that a signal of 640x480@67Hz is being output - as confirmed by hot plugging an Apple Hi-Res RGB Display.
I have also tried the 15AV on a IIsi built in video, and a Toby card that's fitted in the IIci. Again, it remains dark.
It does work fine on my more modern Macs supporting multisync, so not sure what's going on with it. Could it be that there is circuitry specially to handle the composite sync signal, and it has a fault?
This means that this monitor should be compatible with the composite sync singal put out by the II-series' onboard video.
When hooked up to the IIci, the monitor remains dark. I have tried using an 8-pin adapter set up for a 13" RGB display, and am confident that a signal of 640x480@67Hz is being output - as confirmed by hot plugging an Apple Hi-Res RGB Display.
I have also tried the 15AV on a IIsi built in video, and a Toby card that's fitted in the IIci. Again, it remains dark.
It does work fine on my more modern Macs supporting multisync, so not sure what's going on with it. Could it be that there is circuitry specially to handle the composite sync signal, and it has a fault?