thanks for the response stanmarsh - that is much obliged - the battery seems fine, although it has been noticed that discontinued usage of the the machine causes a 'memory-reset' alarm to go off after about a week, so I think the battery is at its end-life.
I will look on ebay for a new processor board (i trust the other boards should be ok :¬) )
thanks again
Jase
PS thanks so much for migrating the zip file to a movie
Tell you what to save you poss having to buy in a new epoch board (Expect to pay around the £40 mark unfortunately), could post it down to me (Minus the rom's obviously as we don't want to loose those), I'll soak test the board in mine, and tell you the results from there, as it could save you the cost of an epoch board if that is not at fault (Although I do suspect it is).
As for the memory alarm / suspect battery, could very well be the battery is giving some strange operational issues, so to test this out, suggest you just snip off the battery for now and test the machine without it..... if it then boots, all it would need, is a new battery (For testing, the machine will be fine without it..... just ignore the mem reset alarm), which I am sure Alex (aaamusements) can help with