unmanaged615 wrote on 2025-04-14, 23:57:

Hello everyone new to the forums and am looking for a little guidance. […]
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Hello everyone new to the forums and am looking for a little guidance.

I have a wy-50 terminal that acquired from a guy who was the IT director at DEC and it fails the self test with the error of X.

Video here...
https://www.youtube.com/shorts/A4m9ZfhqFGw

Does anyone know what the self test is actually testing? It will receive data just won't send back to the Linux box .

I have an older scope (25mhz) and want to figure out if it's a bad driver ic ( I have yet to dig into the schematics and I have the wy-50+ schematics so if anyone has an idea of where to start that would be awesome.

Thanks for your help...

Unmanaged615

Welcome to Vogons 😀

According to the WY-50 Maintenance Manual ( http://www.bitsavers.org/pdf/wyse/WY-50/WY-50 … ance_Manual.pdf ) it's a "MODEM port error"

I found a replacement PCB on the usual sites it at 180 bucks is to rich for my blood. That's about 65% of the cost new and 1400+ in modern bread 🥪 ... Just looking for what logic it's looking for before I hunt parts ...