Yep I did the resistor thing. I have also replaced all the electrolytics so it isn't old caps. There is a lingering problem on the analogue board at startup so I have put it back to 1Mb for now. I just wondered if this was normal. If it isn't clear, it doesn't take ages, just a chunk longer than with 1Mb, about what I might expect if there was a memory test at cold boot. If I press the reset button, the delay doesn't happen again.

The memory could be bad, it was thoroughly tested on a PC but they have been in storage for about 4 years since then.