We have a GE profile dishwasher that is toning constantly from the control board and non responsive. This is following a power loss.

Have done the following with no resolution:
1. Replaced the main control board with new.
2. Disconnected all plugs into main control board with the exception of power; still toning.
3. 120VAC at power supply to board.
4. Disconnected power (white lead) to all other components with exception of heater; still toning.
5. Checked resistance to all components. Results as follows:
Fan: 66 ohms
Detergent module: 2100 ohms
Drain pump: 16.6 ohms
Heating element: 16 ohms
Flood switch: open, no water present
Water valve resistor: 1120 ohms
Circ pump: 10 ohms
Drain pump resistance is lower than on drawing, but does not seem bad; all others appear normal.
6. Check door switch; function correct.
Found one burnt strip on the keypad for a lighting diode; opened the circuit. Have not replaced the keypad yet.

At this point am considering ordering a new keypad and/or temp/turbidity sensor, but do not want to spend the money unless we think it will resolve the problem. Any suggestions would be appreciated. Thanks in advance for your help with this.