This is still in working order - have recently connected to a TV (UHF tuner) and typed some words. The tuner wasn’t brilliant, but I could see the text faintly at the bottom of the screen. Have not run full code/programme, as I’m not a programmer!
I believe these are going for around £600 on auction sites, in similar condition. Open to sensible offer! This is advertised on gumtree at the moment for £550