Hey friend, glad you're back at it!
I'm betting you don't have a TCI module--if you do, it's a black box mounted on the underside of your battery box.
CDI (capacitor-discharge ignition) is what your bike came with, not TCI (transistor-controlled ignition). These were introduced in the 80s, so your bike probably doesn't have one to find.
The XS-Charge module you have
IS the TCI in your case--you can see the transistors mounted on the round plate. It's just a different shape.
Instead of running the wires to a separate box for processing, it does it all in-house. The Yamaha TCIs have chunky old 80's electronics inside; the XS-Charge has neat, small, modern components and connects directly to the coil wires.
As far as troubleshooting, make sure that you're wired up correctly. The
Install Guide says your black wires should go to ground, and each board is responsible for one cylinder. Red wires to coil power, and a green each goes bottom board-LH coil, top board-RH coil.
Have you done a continuity test between each end of the reds and greens? It's possible there's a problem with the wire itself, or only one of the boards has gone bad, or something similar.