Thank you for posting the video and the issues found.
I too have run across repair attempts by others that were, well, just confusing. I am guessing there are some stories to be told.
For example I ran across a scale berk that would not run. The person that attempted the repair thought it was a motor control board failure and had purchased the replacement board. It turned out somewhere along the line, a person wire nutted the incorrect wires together. After correcting the wires, the engine came to life. And the original motor control board was fine. Relearning a lesson - don't assume anything until you do as thorough check/inspection as possible. A lesson that I learned when starting out in my career. But that's another story.
