Arturia keylab 61 MK2 dead key

I have an arturia keylab 61 MK2 with a key that is completely dead. I have removed the keybed and tested every diode on the circuit boards attached to the keys (started with the two on the dead key but when they tested as what I interpreted to be good proceeded to check them all) and each gives me a reading of 652 and when leads are reversed OL. I have plugged the circuit boards back into the keylab with the keybed pulled and even attempted to use the contacts from a different section of the section of the contact strip on the dead keys circuit board contact but still got nothing. Anyone have any pointers or insight as to what the problem maybe and how to fix it. Thanks…