Alright, y'all. The verdict is in. Apologies in advance for how long it took me (life and shipping delays got in the way) It was in fact the long ribbon cable that connects the two boards together. (Thank you @devnol) The unsuccessful troubleshooting I did prior was: (1) Replaced the smaller board for the righthand buttons (2) Replaced the power/volume ribbon but ultimately was the long ribbon. Thank all of you for all your feedback. I appreciate it.