I have an iPac4 (PS/2, not USB) that I purchased from Ultimarc a few years back that I have installed into a mame controller box. It worked great early on, but I hadn't used it much in the past several months and now it gives me the flashing LED that then goes out. I saw on Ultimarc's website that this is a 'failure' but it doesn't go on to say why or what troubleshooting to do. I'm running Win 10 now and may not have tried to use the iPac since upgrading, so I can't tell if that's the issue or not. (I do get a solid LED if plugging into the passthrough).
WinIpac doesn't recognize the iPac at all. Any ideas? Is there a forum topic somewhere that addresses this?
Thanks,
Brian