Hello! first day here on the forums!
recently the display in my Macintosh SE broke (the pins came off from under the suction cup when I tried to remove it) and rather than try to find a new display (or repair a part the uses high voltage) I decided to have some fun and wire up a way to use an external monitor on the machine, however I'm having some trouble with generating a Composite video signal, you see i have 3 wires; Video, Hsync and Vsync. When I connect these wires to an RCA video plug and try to use a monitor, I get no output , why is that? Do I need to build a special circuit to properly make a Composite signal? If so how would I go about doing that? I would like to try to make the circuit as simple and as small as possible.
Here's what I've tried so far:
Video to RCA (no H/Vsync)
Video and H/Vsync to RCA
Some extra side notes
There is no video chip, its all done on the processor
Machine is from the 1980s
The wires come from the main board to a analog board that also charges a CRT
I sadly know very little about video signals
Thank you!
recently the display in my Macintosh SE broke (the pins came off from under the suction cup when I tried to remove it) and rather than try to find a new display (or repair a part the uses high voltage) I decided to have some fun and wire up a way to use an external monitor on the machine, however I'm having some trouble with generating a Composite video signal, you see i have 3 wires; Video, Hsync and Vsync. When I connect these wires to an RCA video plug and try to use a monitor, I get no output , why is that? Do I need to build a special circuit to properly make a Composite signal? If so how would I go about doing that? I would like to try to make the circuit as simple and as small as possible.
Here's what I've tried so far:
Video to RCA (no H/Vsync)
Video and H/Vsync to RCA
Some extra side notes
There is no video chip, its all done on the processor
Machine is from the 1980s
The wires come from the main board to a analog board that also charges a CRT
I sadly know very little about video signals
Thank you!