That looks just like our main fridge, built by Amana right here in Newton, IA USA! I don't know about SBDE520, ours is marked Model#: 36795.
The only problem we've had with ours is failure of the water dispenser tube. It gradually becomes brittle due to heat and then will crack. Since the valve is at the inlet you won't generally have a problem until you put your glass up to the dispenser. The fix was easy- pulled the plastic panel behind the crisper to reveal the coil of tubing that cools the water and doled a little more out. Cut out the brittle section, relocated it from the heat source and used a 50 cent compression splice. Anyway.....
What seems to be the trouble?
Love the digital display and controls on these!