Blower help

[Bonehead]

The other day I put the air blower on full to demist the screen and it just stopped. I have checked the fuses and all are ok (No relay fitted) have cheked the blower switch (havent checked power feed yet cos just thought of it) what else is likely to be the culprit.

It is a 2 litre turbo diesel maestro.

Thanks for any help

Nath