Sony SM-WM40 subwoofer: Due to crappy Sony cold solder joints, the red jumper (+/- 4") on the top IB board of my sub FELL OFF. No power, no signal. I was the service mngr for Studer/Revox and if I can see the schematic page showing the position of the jumper I can repair it. I spoke to the Sony service mngr & customer support. It's still under warrantee, I lost my receipt and Best Buy cannot find their copy. This is my last Sony. I was treated like garbage. Do you have that page of the schematic...?