11 quid E450 not surprisingly wont boot..

I scored an E450 with 4GB 1x 400MHz and 20 drives on ebay for eleven  
pounds GBP. (now thats depreciation!)

Of course it doesnt boot (yet) - but it nearly does.

Id like to get it going rather than cannibalise it.. Plenty of cheap  
E450 parts on ebay means that theres no limit to what can be replaced..

I couldnt resist it - full of drives :-)

All Power is green, the key mechanism works.

OBP loads, I can see the hostid and Sun banner, It displays memory (it  
seems to think 2GB now) it gets as far as the initialising | which  
doesnt turn and it just hangs there forever.

I tried the diagnostic boot, same thing. I tried breaking into NVRAM  
and can get to an OK prompt and lots of drives show up :-) but from  
there on Im not sure.

I am planning to take all the memory out and boards and drives out and  
slowly rebuild it checking if it boots each time. That way I can  
isolate the defect.

Im sad to say I dont know a lot about this class of machine, being an  
Ultra 10 sort of person. If anyone has the time to send me links to  
places of interest or indeed immediatley knows the likely  
troubleshooting steps please feel free to email me directly and I will  
summarize.

thanks

Angus