Zanussi ZSF6066 dishwasher dead.

Checked all the usual. Power is getting to board and to door switch and main programmer switch seems to be working but no lights come on and nothing happens. Had a good look at board but no burning, no visible dry joints or popped chips. (Have brought it home to study at my leisure.) Took off side panels as well as door panel and everything looked clean inside, no leakage, no reason to suspect anything. Water was still in machine so presumably stopped mid-cycle. One thing I did notice was rinse aid compartment seemed to be choked up with dirt / fat or stained anyway. Also cust. said had had a bit of odd behaviour (unable to programme?) a few weeks back which seemed to right itself. Tried in a different socket also, as there was slight yellowing around one terminal on the one it had been used in, but no joy.
Sharp edges everywhere and came from B&Q. Is this Chinese? It has that feel about it.
Mike.