Is this worth repairing?

Hi all,

Thanks in advance for any help you can give.
I’ve got a Hoover Nextra Wash’n Dry 7.5+5 machine bought in October 2004 s/n 3100063804361409.
Last Saturday, all of a sudden it stopped working. It goes like this: Soap in dispenser; Dial settings set to plain wash 40 degrees (or any settings for that matter); machine goes through the motions of “understanding settings” (i.e. some small gear noises); no door lock light; Press button to start process; door lock light start flashing; no door lock noise; then nothing else happens. I though initially that it was the compressor because no water goes into the machine but now I think it could be the door lock sensor. The door lock catch is OK, no broken bits but I sense there is something not right when system does not lock the door.
The machine cost me £400 in 2004. I don’t know how much it could cost to repair or even if it is worth repairing.
Any help appreciated, thanks.