07-09-2018 03:06 PM
I replaced the brush and it fixed it. I was apparently missing a rubber piece on the circle side of the brush (opposite of the square side) I wonder if you can just buy that rubber piece because it cost 30 bucks and the other was still in good condition.
08-30-2018 12:32 AM
Okay, I spent 2+ hours on this, and finally came to the conclusion. It's not the powerbot, but the rubber brush, when it rubs against the wood it makes this noise. And that's why this noise doesn't happen with the brush off. And you don't hear it as much on carpet. I found out by just litterally putting my face right next to the powerbot. When you rotate the power bot using the remote in a way where it doesn't impede with grooves of the hardwood floor the noise stops suddenly, but when the powerbot is vacuuming in a way, the noise becomes louder. Kinda annoying but if it's this then I won't return the 7070
2 weeks ago
@userepFjeR1cZe, the Powerbot would need the brush bar to function.