Bosch Dishwasher looks very dead

[Brian143]

Got home the other day to find our Bosch SGS5308 Dishwasher was off. I thought I had started it before we went to work. Display was blank - usually stops displaying "0".

I checked the On-Off switch and it was indeed depressed (me too!).
Opened the door and found it had stopped before draining initial rinse.
Checked external mains electricity supply and fuses - all O.K.
Checked drain pump impeller free and hose not blocked - O.K.
Checked incoming main water pressure - O.K.

Bit lost now, except for the control module, which looks O.K.
A new controller is nearly a third of the cost of a new machine, and it is seven years old.

Is there anything else I could check before I admit defeat?

 

[jj4091]

Door ribbon cable?

 

[macmini]

There's a good chance it could be the door switch itself.

This is easily tested if you have a multimeter.

Make sure the machine's unplugged if you're going inside!