KENMORE
electronic solonoid change
If you have one of the newer KENMORE canister vacuums with a power brush, you have an electronic component controlling the main vacuum motor.
It consists of a circuit board in the main vacuum with a "DIODE" which recieves a low amperage signal from the hose switch to turn on the higher amperage motor.
In the past it was a beefy mechanical switch/solonoid, now it is a pittiful fragile (and expensive) little circuit board.
Instead of paying SEARS $80.00 for the part and $69.95 labour you can install a better cheaper alternative.