dc37 cycles on and off but not working

[martelc]

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Hello I'm a new users and wanted some advice.  Yesterday, my dc37 stopped working.  When I press the power button, the machine turns off and on repeatedly for a split second.  Can someone give me some advice on what the problem could be?
Thanks

[ryevac]

No direct experience with the 37, but if any other vac i would suspect main switch or motor brushes worn.

Try again but when it goes off, give the main body a slap - either of the above two issues could cause motor to restart / stop.
Also try pushing main switch and holding down, if it continues then switch could be at fault.
Difficult to diagnose through a web page.

[martelc]

Thanks for the tip, but it is still turning on and off repeatedly.

[MVacs]

When you say "on and off repeatedly", you mean its stopping and starting on its own? Or do you mean it tries to power up and then stops?