So, by your own posts, there is no harm, in doing a typical computer thing, unplug it, squirt of WD40 on both connector, reconnect, if it works for now, top banana, if it don't, the misses can't complain with having to shell out for a new part!!
Show, I don't think anybody is disagreeing with the diagnosis, just that there are some of us, who would like to rectify a probrlem, than repair it. No point spending £20 - £50 on parts, which, in the end, aren't faulty, just not 'sending' correctly. Thats my 14 years on fast millitary jets, experience for you, lol.