intoodeep1113

Hello, I just wanted to chime in and say this is the exact thing that happened to my Mamba Monster X. Some internal component in the speed controller had gone bad and it had to be replaced under warranty. Unfortunately it took about a month to get the replacement, but it was around Christmas time. It sounds like it is likely that my speed controller was in the same batch as yours. The new one works great though and seems to have a bit more output than the old one too.