Quote Originally Posted by k_c_r
Anything more you learn about that model of servo would be welcomed
OK, now had a look at it and 'run' it at 11.1v. Not a big molten mess but did release the magic smoke.

I've now taken it apart and it seems that the only damage is to the track from the live feed and a shattered signal diode. The rest of the board actually seems to be ok (meaning it hasn't burnt out to any visible extent). Beefed up the track with a bit of wire and now need to get a few appropriately sized diodes and play about with some resistors etc. It's actually quite nice bacause the board is big enough to see what is going on rather than trying to work under a magnifying glass all the time.

Andy