Swapping boards on ST225 drives / Philips P3800 help

Tony (and others), I misremembered about the drive - I've just had the case off the machine to get some pictures in response to Stefan's post about the P4500 (at www.moosenet.demon.co.uk/temp/p3800 for anyone who's interested) The drive's a Rodime 202E which going from memory is 50MB or so. I'm quite keen to see if I can get this thing running now as it's got me curious. The key at the front has 3 settings - off, on and 'pm' - I have no idea what the latter does but the abbreviation might mean something to someone?? Applying power I get LEDs on the back of all cards, plus one labelled as +5V on the power supply board. No fan activity though and no hard disk spindle motor; maybe a +12V rail is dead or the problem might be more tricky to diagnose. There's five LEDs on the front of the case - labelled 1,2,3 and 4 plus one with a power symbol - none of those light when power is applied. Might be something stupid like the system is waiting for a console command before starting the disk but that's probably a little too hopeful :-) There's 6 cables hanging out the back, all terminated with 25 pin connectors. One's black and unlabelled, another is grey and unlabelled, and all the rest are grey and labelled as: '8 bit 3100', '16 bit 3100' '8 st' and '8 st4'. Mean anything to anyone? Are those terminal types or something? I'll reseat all the cards tomorrow and measure a few voltages to see what's what - plus connect the hard drive to a known-good supply and just check it does spin up. IC dates are all in 1984 so it's more recent than I thought (I'd guessed '82 or so) but no idea when it last ran or what it was used for. Hopefully the disk wasn't wiped prior to it being submerged in a flood! :) cheers Jules __________________________________________________ Do You Yahoo!? Everything you'll ever need on one web page http://uk.my.yahoo.com