Circuit Board - Bissell 93Z6 Heavy Duty Bagless Upright Sentria II The chassis is the base

The chassis is the base frame of the power head

Carbon brushes are wear items that transfer electrical current to the motor armature

Benefit: restores full suction power

AirVac: AV600

It is a direct-fit replacement over the existing head

Circuit Board - Bissell 93Z6 Heavy Duty Bagless Upright Sentria II The chassis is the baseThis replacement circuit board restores electronic control to the Bissell 93Z6 Heavy Duty Bagless Upright. The board manages the vacuum's electronic functions, including power and speed control. A failing board can leave a vacuum that will not power on, cuts out unexpectedly, or loses speed control. Because these faults sit in the electronics rather than the motor or brush roll, swapping the board is often what returns normal operation. Correct