Howdy. We have a BB2 button that will not respond. On the button itself we have found that there is an area that, when the button is pressed, a part of the mechanism will breach causing a disruption between tiny light sensors. One of these miniscule sensors has broken off. If anybody has one of these buttons in front of them, it is the tiny sensor marked "Q2". I am in need of the correct name of the sensor in question so that I can track it down, buy it, and fix the button, but I am wondering if it is worth the headache. I'd rather not spend the $300 for a new button if I can keep from it, but hey...stuff happens. I've attached two images for reference. I appreciate any and all help.
Thank you,
Tyler