Tandon TM 502

Hi fellow classiccmpers... I recently picked up an old Act Sirius 1 machine (I've been looking for one for years), which has a Tandon TM 502 harddisk in it. Unfortunately, the HDD doesn't seem to work :( It spins up, by the sounds of it, but is not talking to the computer. There's no head noises of any description. Where would I start in trying to diagnose & fix this drive? I have an elderly oscilloscope, but little else in the way of diagnostic tools (no logic analyser, for example). Or am I better off considering it scrap & trying to find a working replacement? Personally, I'd prefer to resurrect this one if I can. Cheers, Ade. ___________________________________________________________ Yahoo! Answers - Got a question? Someone out there knows the answer. Try it now. http://uk.answers.yahoo.com/