Issues with my GE Profile refrigerator: Initially, ice maker would not dispense as auger motor would not run. Display lights for ice-water would illuminate and dim. Now both freezer and fridge are not cooling at all. Now, lights on dispenser functions blink on/off. Temp control display for both freezer and fridge shut off completely. When I push buttons, they come on and blink in sequence with ice/water display and then shut off completely. Suspecting mother board failure, but wonder if blinking is an error code that can assist in troubleshooting? Watcha think?