I have the common problem of a GF that says the lid is open when it isn’t. Like many of you, I have tried every test and fix that I could find out there, and was very thorough. One problem is that the forum topics are closed so fast that I could not see what happened with other people in my situation. I opened a topic with the intention of sharing my full experience, but it was closed on the second day. Once you start emailing the support staff, they will close your thread, which means that most of the trickiest problems and solutions are taken out of the community space.
So I will just tell you that, for me, it seems to be a problem with the black lid cable. They have a life span because they flex. The black cable on the lid doesn’t have to break in any visible way. It can just be flexed too many times, and the lid can stress it too much just by being too open. I was trying to fix a different problem, and so kept opening the lid a little too far in order to have more space.
The support people offered me a $20 replacement at the time of this writing. Sending it in would cost at least the $200 shipping charge. I have read from others that the new machines have slightly longer black lid cables to avoid this problem.
The other really common problem that I saw a lot was that people didn’t realize that their front door wasn’t closed properly. There can’t be crud or anything else messing with the front door closing.
I myself had a lot of temporary fixes, but if it’s a connection issue, the problem seems to get worse over time. No amount of re-plugging and cleaning will help after a certain point of wire damage within the cable. Hope this helps someone.