A few days ago I decided to have another look at our Bosch dishwasher (in the house, this is, not the boat). It had been temperamental, and then it stopped working altogether with, apparently, no mains getting through to where it was needed.
Well, that wasn't quite the case. I removed the door panel and found that there was mains voltage there all right, but on the neutral side as well as the "live" side. Hmm. This is like the situation in low voltage circuits when a component fails to work owing to a poor return connection.
I needed to look at the plug. After clearing the saucepans and washing up liquid bottles from the cupboard next to the dishwasher I could, partly with the aid of a mirror but mostly by using my camera, see where it plugged in.
The plug was only half-way home. The live pin must have been making contact, but not the neutral pin. Let's hope the earth was connected! I reached in and found that the plug was stuck to the back of the dishwasher.
The cure was as simple as cutting off the old plug, wiring up a new one and plugging it in to the adjacent socket so that it was clear of the back of the machine. Done. Switched on - and the light came on. I just knew it would work (but I still loaded it up and let it wash it to be sure).
So it wasn't the selector switches after all.
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