Jiffyjammer

I need some help with my Yamaha TRB 6P. I bought it about 14 years ago and I love it. It quit on me a few days ago. I'm not very technical but I took the electronics cover off and found a small red wire had came loose. I can solder but I have no idea where to reattach it. Any help would be greatly appreciated! It's the red wire at the bottom of the photo.