A picture is worth a thousand words...more pictures are better. Can you take photos from several angles of and distances from the area(s) concerned, and of your house and land from across the street and post them here?

Yes...your motor is causing the GFCI to trip and it needs to be repaired. You can have DeWalt service/repair it for you. But it will be expensive so you might be better off buying a new scroll saw made by DeWalt or other brands. Portable and or major power tools shouldbe plugged into regular circuit breaker outlets then a GFCI.

The original post and parts of the issue posted by cgtaz is the same problem I have. Door goes up an inch or two and then back down and back up an inch or two and stops, leaving a gap right at the top of the door as it separates to roll up on the tracks. But, I live in sunny California, so cold weather is not the issue. At noon it worked fine, when I closed the door last, but wasn't able to open it when I came back home. Thinking it might be the remote, I parked in the driveway and went into the garage to try the wall switch. The same thing happened. The door went down an inch or so, then back to the position it was in, which is closed, but not really. I checked the sensors, and one light was a steady amber the other a steady green. Kept on trying the door with no results, after cleaning away cobwebs from the sensors. After reading sdello's nicely detailed and very descriptive instructions,about the hand pull and the trolley , I followed those instructions. Pulled the lever, and the spring disengaged. I hit the wall switch and the trolley traveled all the way back to the unit. I hit the wall switch again, and the trolley moved forward and engaged with the rest of the door mechanism. I then tried the wall switch again, and the door made a loud thud and dropped the initial inch to the ground, closing the gap up at the top (fully closed) I then studied the two large springs above the door itself, and low and behold, one of them is split in two pieces. Conclusion, one of the large springs is shot. So, thanks to your help, I was able to figure out what was wrong by process of elimination. Before finding this post I was all set to go buy a new garage door opener, and have it installed. Totally unnecessary after reading up on it here. At least now I know I have to find someone to replace the springs instead.

Good one!! Donna (^_^)