Tried the repeated power up cycle technique, no luck - not yet anyway.

More detailed account, the drive starts to spin at one speed for a few seconds and then makes a noise before "I think" attempting to go faster but it doesn't sustain this second speed or phase and slows to a stop, so I wonder if it's the switching done by the board which has gone bad.

I also had the drive out, took the circuit board off, looked all over it for a bad joint, no luck.