Hi. I've got two Kenmore Progressive canisters (sorry, don't have the model #'s handy right now.) that are both dead. I have checked the line cord, etc. with both a voltmeter and an ohmmeter. Everything seems continuous. I fed power directly to the motor and it works fine. I suspect the circuit board is the problem. I see what looks like Triacs on the board, but don't have any info. Does anyone have a schematic or a wiring diagram they can share? And those two lift-up "doors" -- what's the trick to getting them out without breaking the plastic "hinges", so you can get to the screws? Thanks for your help. RZ