Do Supex cartridges have a different connection pattern than other carts? Users of these carts know that the pins are not color coded. I followed the color code from another cart I had and I'm only getting one channel playing along with a hum. I know the cart is good.
It could be those smaller than standard cartridge pins that Supex's have. I tried crimping the connectors before sliding them on and I think that they are making contact. But I recall a similar issue I had once with an unmarked Koetsu so I want to confirm the connection pattern for these.