Dead Keys on Korg Minilogue

Howdy,
I have a korg minilogue with 4 dead keys. I cleaned and replaced the contacts to no avail. I cant see any breaks but this is my first synth surgery so maybe im missing something. Anyone have any leads on a place i can buy a new key motherboard to replace the old one? Or maybe theres another method i should try? Any help is greatly appreciated thanks.
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