Hotpoint Aquarius WMA40 door fault

[adougl16]

Hello,
While using my Hotpoint Aquarius WMA40 it made a bang and stopped working. The drum was full of water.

I have drained it and checked all the waste pipes for blocks and changed the fuse. It will now switch on but won't go past the "door locked" stage.

Door locked light flashes and as a result, the machine won't switch on.

I searched for Hotpoint error codes, but wasn't able to find any for this particular model (with six lights).

Any suggestions what I could do to try and find out if the sensor is broken (the part the door hinge closes into) or if this is to do with the handle mechanism?

I've tried putting some WD40 into the mechanism, but without any luck.

Thanks,