Quoted from AtomicChuck:I battled mine for years and finally got rid of the connector between the cpu and driver board. Simply soldet the wires together and get rid of that connector.
Wow, this is a quite brute approach and I do not think this is an appropriate solution (except you want to find your pin in the "worst repair hack" thread one day).
It also may lower the value of the pin if you want to sell it one day (I would not want to have a board with soldered connections and it normally tells you that the repair was not done by a professional and you are asking yourself what else has been done to the boards).
I can only repeat the advice from the others.
Follow the steps from the document and you will normally be able to fix the issue.
I had this once with the Black Rose and it was one of the capacitors.