Help, please. Bought a new brush motor for it, and it does the same thing, so figure it has to be a circuit board problem. There's a lot of people on the internet with this problem but no fix.
The main motor works fine. When you press the brush roller button on the handle, the brush roller motor turns on, then shuts off after about six seconds. It does it without the belt attached, so it's not a hair clog or similar on the brush roller bar.
Hoover 72400RM Air Steerable vacuum. That may be a model number for refurbished versions of this vacuum. Other models that look the same at least on the outside are Uh70400, Uh70402, etc.
Anyone heard of this problem before or has some ideas? As I type this, I probably should have checked the resistor values already but have not. And then I'm out of ideas.
One wire plug on the board goes to the lever/switch that disables the brush roller when the vacuum is upright. That works properly. The other plug goes to the brush roller motor.