So it looks like your unit completes my list (more or less) and then continues on to load other things. My R3465 has no options. Maybe yours has other options that use the extra files.
RXSRV.X - maybe some kind of server process?
BASIC.X - some form of the programming language called BASIC?
My unit doesn't include these files at all.
There is a way to copy the internal files to a compact flash card. I did it many years ago, but I don't remember how. I do remember that the info came from the users manual. If you think it would be helpful, you need a PCMCIA to Compact Flash adapter and a *small* Compact Flash card. 32 MB cards work, 64 MB cards don't work. Yes, that's MB as in MegaBytes.
The adapter and Compact Flash card are also useful for saving and copying screen captures. Pick up a USB Compact Flash reader and then you can move the captures to any Windows or probably, Apple computer.
FYI, I've attached a PDF that details my investigations regarding the use of Compact Flash cards.
But at this point, it seems like the digital side of your unit is probably working correctly. But it seems really odd to me that there's no error message and the system just hangs.
When it does boot up properly, have you checked all the outputs (30 MHz, 10 MHz, IF outputs) to make sure they're good? Have you run through the internal calibration procedure? If there is a PLL that's marginal, maybe that will retune it.
Ed