There are others who would have a much better idea what to look for. I was interested in doing this mod but decided my 74 yo eyes and fingers weren't up to the task. That said, I'd be looking for 2 solder blobs close enough to short out when the board temp rises.I had to go to work, but when I get home I'll continue my quest for the.dat. For now though, could the simplest cause be that I didn't get that motor soldered well?