Ben provides a straight forward and detailed video to identify, access, and replace the components that have likely failed and conveniently links the correct part IDs to his store front, where he does have the best prices. I did reference another person's video on diagnosing, but in reality, I just wasted time troubleshooting rather than just replacing the main board, inverter, door lock solenoid and pump and being done with the job in a couple hours and a few hundred dollars. Aside from the wires and mechanicals, there isn't much else to fix; all solid state. I first replaced the door lock solenoid, but that wasn't the issue; at least I have a new one in case that is what caused the main board to fail. I was also inspired to take that extra easy step to address sludge accumulation in the drain pump, which tested okay but I replaced anyway, and cleaned the lines which turned out to be the source of that foul smell. In the end I do not have evidence of what caused the board to fail after 5.5 years (right after the extended warranty expired): door lock solenoid, drain pump, inverter overload, bad main board, who knows? But at least I now have clean clothes and didn't have to buy a new washer. Still have another 4.5-year warranty on the motor! GFW850