I have been having this problem for a while, but now it's getting worse. There is either a bad contact or broken microelements inside this "computer box" distributing signal to cooling fans. I need to replace it, but my mechanic keeps saying it's an "expensive box" and should be a special order. Does anyone know the exact parts number and/or parts name and any sources to buy it?

With deep gratitude in advance,

Valdemar.