Denial

c= would ship special key overlays for the keys along with the different character rom
some even dualboot like the Chinese rom does

I am not to sure about backfeeding 9v into the userport to power a vic
do you have a link to the Arfon Micro expander ?
and yes I do have lots of connectors , I purchase them 500 at a time

well I HATE drilling holes in cases and figured this way was the least of 2 evils so yes in a way I did it so you cant accidentally switch it , and to hide it all that will happen if it does get switched is the composite is B/W , so you can easily tell what mode you are in and switch it back the mod...

I finally had some time to play with a vic20 today and did another dual s-video / composite mod on it and cleaned it up a lot so now its easy to switch between the 2 , the switch can be accessed through the cassette port I am slowly getting it decked out with mods http://s23.postimg.org/r75hiuvhj/IM...

I hope you are happy with the harness
due to the total lack of interst in my projects I will some day complete the vic20 cartridge board to go along with the harness
but I am in no rush
ken.

what you really want to find is the really old keyboard with the little suction cups instead of springs for the keys
that is 1 interesting keyboard to take apart and clean ...lol

so why do you keep asking me how its done? sounds like you are on a ego trip! I will go make a new thread with picks and instructions so you can pick it all apart and offer no valuable help in that new thread to and I already know I will need to show 10 different ways to do it and you will find some...

how can a simple switching s-video mod stump a electrical engineer ?
I guess i will need to post step by step picks so you can follow along?

its not rocket science , even I was able to figure it out as I stated earlier in this thread I added the resistor and cap and switch and 2 wires I cut the trace between 4-5 lifted one end of FB7 off or out of the board , the side that connects to c13 so the FB7 is still attached to the 6560 and sold...

I moded the vic20 with a switch for composite or s-video
the yellow is only used for composite
the red and white are only used for mono audio
and it has a s-video end that is used only for the s-video

I use a AOYUE 701A
and a AOYUE 866 hot air
and a WELLER EC 2000 stand alone solder station

here is the 5 pin composite/ svideo cable I make
it has s-video
composite - yellow
dual mono audio red-white

vicist it really is just that easy

a basic plug n play model could be done with the adapter like you say with minimal components everything needed could easily fit inside the sockets dead space under the IC the issue I see is getting people to agree on what is a acceptable board some will say use the KISS method and others will say y...

a plug in s-video board is easy to make for the vic-20
the big issue is not all vic-20`s have socketed 6560`s
so you would need to unsolder the chip and add a socket , defeating the plug and play aspect of it
I guess for the lucky people with the socketed vic20 it would be a good idea