I think it just came unsoldered...if the traces broke off would it still work? If they did break off can they easily be replaced?
I have a BK that had the same problem. What I did was just expose where the trace is and soldered on top of it. The PCP trace that was on the bridge have to be removed. I wish I had it with out the black shrink wrap as I would take some detailed pictures for you. Contact GriffinRU, he'll have a solution for this.
Do you have 6V or 5V UBEC? I had problems in the past with Airtronics receiver running at 6V from similar UBEC...
I believe it's a 6V UBEC. I originally had a JRRS300 receiver in it but it was doing the same thing so I tried the Airtronics receiver...but still no better...