I would rather have a HDMI output on the Colecovision since 100% of all TV’s now have HDMI inputs at Walmart and other retail stores (all TV’s being sold now are HDTV’s). Some monitors now even lack component video inputs and only have HDMI inputs.
However, since there is no HDMI modification for the Colecovision/ADAM then component video outputs would be the best available in terms of picture quality. I was disappointed to hear that the expansion module #1 Atari 2600 adapter still requires composite video outputs. There should be a way to convert composite video internally in the Colecovision and convert it to component video instead of having to switch inputs when wanting to use the Atari 2600 adapter.
I am guessing that this modification will only work for the standalone Colecovision and not the standalone Adam computer? Also if I were to connect expansion module number #3 (Adam module) up to the standalone Colecovision would I be able to use the component video outputs? Also it is my understanding that the mono audio output would be able to be passed using the RCA audio output instead of RF output on the Atari 2600 adapter and Adam module with the component video modification.
If you offered an installation service I would be interested in getting my Colecovision upgraded to component video outputs.
The ColecoVision video chip outputs something that is very close to being component video, so component output is a natural stopping point for video output quality (although products like the F18A bring that to a whole new level). Just like the 2600, where S-Video is a natural stopping point based on the hardware. HDMI through conversion is easily done, although your results may vary, depending on what converter you use. I use a component to VGA converter in my "shop", so I can use my computer's monitor. The blacks are bluer than when I go straight to my TV via component, but it still looks really good.
Yes, unfortunately the A2600 expansion module outputs composite video. It's not trivial to convert from composite to component. It can be done, and you could switch between the two inside your CV. Like anything else, it's a matter of time and money... not mine!