Johnson T8000 - Treadmill Starts to Run by Itself; All or some of the Keys on Console Do Not Work

Treadmill starts to run by itself
Possible causes:
1. The console cable is broken.
2. PCB is out of order.
3. MCB is out of order.
Fix:
1. Replace the console cable with a new one.
2. Replace the PCB.
3. Replace the MCB.
All or some of the keys on console do not work
Possible causes:
1. Keypad connecting plug is not fit-in properly.
2. Keypad is damaged.
3. PCB is damaged.
Fix:
1. Disconnect the keypad and replace the keypad, and check again.
2. Replace the keypad.
3. Replace the PCB.