Have you tried opening up your device and blowing all the dust out? also check for any loose connections as that is often the issue
When cleaning the keyboard and fan, I believe I tried blowing as well. I did also reconnect a couple of things that I could access. My tools don't allow me to access the motherboard yet as that is a layer beyond the keyboard, and I am not sure I want to unless I know that I have to as a last resort given what happened with the keyboard. I believe I am able to see the power supply connection to the motherboard though despite not being able to wiggle it or reconnect it. Probably doing what I did again will temporarily fix the issue again, which makes me think finding a way to continuously ground the electricity is what is needed, but I don't know.