It will not power up

Try plug it into a wall outlet that you know is good. If that's not the problem turn the power switch to on, then test the power cord plug for continuity, if none the power is not getting to the unit, could be the switch is bad, or wire broken/disconnected inside unit.

The light is connected to the heater if it is not working but the unit still gets hot the light may be faulty
If the unit does not get hot then there is a problem with the power getting to the heater element.
The fault may be in the switch

Take it to a qualified repair facility. Even as there isnt to much to a vacum let the tech check it out. Could be a faulty switch or controls. I dont think its a serviceable by homeowner problem.

Dear Davehibshman,

Firstly; dismantle the plug and replace the fuse with the same rating as the one you have just taken out. Replace the plug cover, put the plug into the socket and try again. If this doesnt work, there may be a problem with the internal fuse (if one is fitted). Two choices here, either refer this unit to a qualified service personnel/ the place where you got it from, or do the job yourself (which will save you a whole bunch of cash). In your circumstances, I would take it back to the place you got it and ask them to put the fault right, or replace the unit completely; if it is past its warranty or guarantee time, then get back to me with a make and model number of the unit, and I will give you step-by-step instructions on how to solve this.

Yours sincerely

Oz

The motor may have a sticking brush or a dead commutator segment. Turn off power to the unit to check for sticking brushes. Reapply power, does it now run? If not, shut it off, physically turn the motor a few degrees, and reapply power. If it still doesn't run, look for loose wiring around the motor. If it does run, replace the motor armature or the entire motor if the armature is not available as a separate part.

Is there a light that comes on when you "turn the power on." If there is no light, and the unit is plugged in, how do you know there is current going to the motor? Sounds like there might be a break in the cord. Examine the cord near the plug end to see if one of the internal wires is broken. If you cannot tell, then you need to try taking the unit apart where the cord enters the unit and testing continuity with a meter.

These problems are nearly exclusively caused by a bad circut board and replacing it is the fix. Bad boards can cause many different effects so its nearly impossible to be sure. The 9v signal wire is not enough to short out an entire unit so it is unlikely the hose. If it is a direct connect system and you are pulling power from the 110 somehow that would cause main unit problems but that is unlikely at best. Sounds like a failed board to me.

Best of Luck

Its the battery cell, its dead and unable to hold a charge. you will need to purchase another cell.

you motor might be broken
this is the only thing i can think of unless your motor is not getting power
this could be a loose wire
if the light is comming on then the unit its self has power

hope this helps:-)
ricko

Is there a small LED light illuminated where the low voltage wires connect to the main unit? There may be a small rubber boot covering the connection and the light. Just slide it back, and there should be a green LED light if the unit has power. If the LED is not on, there is no power to the unit (tripped breaker, plug came loose from electrical outlet, etc.) If LED is illuminated, short across the pins where the low voltage wires connect to the main unit. (These will be small 18-22 gauge wires, not the larger electrical cable!) You can do this with a coin. (Don't worry, it's just 24 volts and you won't even feel it) The unit should come on. If it doesn't, and you have light from the LED, then it's probably the relay on the board inside the unit, or the motor. Good Luck!