Success – of sorts! I’d got a second kit to give to my brother in law, who’s a retro gaming fan. Built up the second kit and it’s working perfectly. So I must have done something wrong with the first kit? Never mind though, great kit and great fun both to build and now play!
Hi, yes it’s unstable horizontally as well. It’s not a steady scroll either, it varies in speed. Yeah, I do have a serial cable. I can give it a try at my sister in law’s, they’ve got a different TV brand? I’ll try that first and then give you a shout back.