This is a continuation of my original article and includes videos.
I had first looked at the control module. I don't think it would be possible to trouble shoot this effectively unless you were very determined. I looked for the obvious, bad solder joints, spider nests, corrosion, missing, damaged bits. Here is a good look inside. Mine was fine.
This is an explanation of the regulator together along with a folded view, the way it is inside the door as well as laid out on the bench so it is a bit easier to understand.
An examination of the failed motor. It still worked, went down with help but needed a lot of help to go up. Turns out it was rusty. Very strange considering the condition of the inside of the door. Where did the water come from?
A test of the new motor in the regulator before installation into the door.
As I said earlier, this is not a how-to, but a few notes about my experience, in case it helps you. I did not find much on the web when I had to do mine.
Lion's Head, Ontario, Canada