RGB/YPbPr Video Kit Expansion Board

Description

This is an expansion board for the line of RGB kits I have. Will put out S-Video or Composite Video from a RGB source. Needs clock, RGB, 5v, and ground.
For now this should only be used with the Intellivision RGB kit since that is the only thing I have tested this on. https://www.ebay.com/itm/284134846315
I am not aware if this will function with the HD Retrovision. I don't own one so the only way to find out is for somebody to try. I don't see why it wouldn't work...
Included in this kit:
3 Panel Mount RCAs (Red, Yellow, White) [these are of poor quality; so do not over-torque them]
1 MD-40SV connector (this is a S-Video jack that is mounted with glue).
1 MD-40SV breakout (this gives you spots to attach wires to).
First you should set the appropriate jumpers:
There are two PAL jumpers for the PAL region and one NTSC jumper for the NTSC region.
There is also a LPF jumper (low pass filter) but I saw no change in video when setting it [it is off by default].
Next there is the CJ jumper (CJ stands for clock jumper). Set this jumper.
Next:
Now that all that is done place the header pins (short end) in the top of the expansion board.
Sandwich the RGB kit on top (this will help keep the pins straight).
Now while holding pressure solder a few of the header rows on the expansion board so that they stay in place.
Solder a few of the RGB kit header pins so that it stays in place.
Now just solder every single pin in place.
Trim the top of the header pins so that they are not overly long.
Notes:
Notice that the header pins block the through holes that set YPbPr or SOG (this is because you cannot send either through the NTSC encoder).
So technically this kit disables the option for SOG or YPbPr. (YPbPr can be reenabled with an analog conversion but this section is not populated).
If you are trying to use the SEGA cables with inline resistors you can try to remove and bridge the three resistors marked with an *
XC (external clock) is for situations where the Pixel Clock is different from the Data Clock. (do not use it here and do not put a header pin in the hole).
Given the height this may be hard to place in an Intellivision model 2.
Be wary that the metal of the header pins does not touch anything conductive.
I am not responsible for any errors or anything that causes damage to your console.
This is just an expansion board you still require a RGB kit of some sort to interface with in order to get anything from it.
Off Label Uses:
This isn't technically supported but if you know what you are doing this is perfectly usable in other consoles, RGB kits, etc.
You need to set the jumpers to the relevant values.
5V should be 5V; GND ground.
RGB inputs need to be 1.4V p-p; if you have a 700mv source then knock off (but do not bridge) the three termination resistors for the inputs "RI, GI, BI"
clock needs to be TTL 3.58mhz (roughly); or whatever PAL is.
The inputs would be all on the right side (by the THS7374); except for clock which would be the XC through hole. The "inputs" on the leftmost side of the board are floating so do not try to use those.
Re-enabling YPbPr outputs:
The lions share of the YPbPr circuitry is present already. YPbPr was removed to keep the price of the boards low.
Missing is :
2 1411 capacitors 220-440uf 4V (4v minimum, I recommend higher).
2 op-amps; I suggest ADA4851-1
3 RCAs or TRRS/TRRS to component breakout.
YPbPr still needs a scaler to interface with a modern TV. This untested and not directly supported but let me know if you want to try it.
I will re-enable YPbPr in the future as an additional option in this listing.