Anybody ever repaired a washing machine door lock?

First, a bit of a vent. I was already feeling crappy today, due to my lack of employment and having to spend my last £15 on prescriptions. The laundry has been piling up because the weather has been so wet that it takes forever to dry (we don't have a dryer). So this afternoon when I discovered that the washing machine door lock has crapped out and I can't wash any more clothes, I had a bit of a meltdown.

Anyway, once I stopped sobbing and berating myself I opened up the machine and had a look at the offending part. It would be easy to replace the locking bit itself, but the wiring harness that it connects to is also burnt out. I can't seem to find any information on replacing the wiring, although you can order it separately. It's a long shot, I know, but I was just wondering if anyone had ever made this kind of repair and could tell me whether it's worth trying to do it myself or if it's likely to be too hard for the amateur.

I wasn't able to get in touch with any repair places this afternoon so I don't have any quotes, but I reckon it will cost £150 at a bare minimum to get someone in to fix it. Sigh.