WiModem232 on Apple //e with SSC no longer displays any output

[Kailef]

I'm stumped. I literally replaced everything. Motherboard, Super Serial Card, Internal SSC header and bracket, external serial cable, different WiFi router, and even got a known-good WiModem232 from a friend. I'm having the same problem, with settings that I know for a fact worked fine for over a year. I give up, I'm too dense to figure this out. It's clear there's nothing wrong with the WiModem232.