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  1. #1
    Junior Member P3 S197's Avatar
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    Flex 3401 Burnt Out (HELP)

    Ok so yesterday i was polishing a silverado when my 3401 started acting up. The trigger jammed in the on position a couple times and i had to pull it down to get it to turn off. No big deal, happens all the time.

    After maybe 10 minutes of use, it just quit. Very heavy burnt electrical smell from the lower intake. Machine is less than 4 years old, less than 100ish hours of service.

    Any ideas on what this may be? This thing is the life blood of my operation and i need it fixed like yesterday.

    Sent from my SM-G930V using Autogeekonline mobile app

  2. #2
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    Re: Flex 3401 Burnt Out (HELP)

    Have you replaced the brushes since you've owned it?

  3. #3
    Junior Member P3 S197's Avatar
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    Re: Flex 3401 Burnt Out (HELP)

    Quote Originally Posted by talonted View Post
    Have you replaced the brushes since you've owned it?
    I have not, but the brushes surely wouldn't just go from fine to dead immediately. And they definitely shouldn't smell burnt.

    My makita 9227 has been through more brushes than i can count, and you always knew ahead of time that they were going out. Never smelled funny or anything.

    Sent from my SM-G930V using Autogeekonline mobile app

  4. #4
    Senior Member JustJesus's Avatar
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    Re: Flex 3401 Burnt Out (HELP)

    Interesting. Never heard of this issue.

    Please, keep us posted. I have two of these machines and would like to know what I should look out for

  5. #5
    Senior Member MarkD51's Avatar
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    Re: Flex 3401 Burnt Out (HELP)

    I'd say that since the Trigger was starting to give you problems beforehand, this might be the likely culprit.
    The switch, or wiring to it burned up.

    But, here's the question, can one get parts to possibly do a self-repair?

    I might be wrong just assuming a switch, I'm guessing the Flex 3401 might be a bit more complex and sophisticated than say a Hoover Vacuum.

    New switch here is about $30.
    Not sure if AG handles parts? Can't hurt to ask?

    Parts for XC3401VRG | Powerhouse Distributing

  6. #6
    Senior Member MarkD51's Avatar
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    Re: Flex 3401 Burnt Out (HELP)

    Looking at the schematic, the switch swap looks pretty straightforward to me. The Switch itself looks like plug and play affair with a multi-pin connector.

    If it was me, I'd no doubt be buying the switch from somewhere where I could get it fast and repair myself, rather than shipping and waiting for it to go to-from some service center.

    Further confirmation of it likely being the switch, is that I see near the switch, the housing right there has air vents. Were these the vents of which you speak the burnt smell emanated from?

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  8. #7
    Senior Member MarkD51's Avatar
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    Re: Flex 3401 Burnt Out (HELP)

    Another part's site, and here's an image of the switch itself. Looks simple enough. And yeah, something like a switch, it might function a million cycles, and then maybe only 10,000 cycles, hard to say with such a part failing and at what point?

    Switch [293504] for Flex Power Tools | eReplacement Parts

    PS: I just did a forum search, something you can do too. The first thread I came upon with the search being "Flex Parts", brought up what appears to be a similar issue to yours, and yep, it was a failed Switch.

    The one poster who responded said that commonly just two things can go wrong with the 3401, the Power Cord and Connector, and the Switch.

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  10. #8
    Senior Member VISITOR's Avatar
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    Re: Flex 3401 Burnt Out (HELP)

    if you can't figure it out, try giving powerhouse distributing a call. they've been the authorized repair facility (in the USA) for the 3401 since it's been out...


    Powerhouse Distributing
    11011 I Street
    Omaha, NE 68137
    402-715-5999

    Store Hours:
    Monday - Friday
    7:00 am - 5:00 pm

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  12. #9
    Super Moderator Bobby B.'s Avatar
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    Re: Flex 3401 Burnt Out (HELP)

    Sorry to hear that you're having issues with your Flex Polisher. Powerhouse Distributing handles the replacement parts and repairs for the Flex Tools. They will be able to assist you.

    Powerhouse Distributing
    11011 I Street
    Omaha, NE 68137
    402-715-5999

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  14. #10
    Junior Member P3 S197's Avatar
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    Re: Flex 3401 Burnt Out (HELP)

    Quote Originally Posted by MarkD51 View Post
    Another part's site, and here's an image of the switch itself. Looks simple enough. And yeah, something like a switch, it might function a million cycles, and then maybe only 10,000 cycles, hard to say with such a part failing and at what point?

    Switch [293504] for Flex Power Tools | eReplacement Parts

    PS: I just did a forum search, something you can do too. The first thread I came upon with the search being "Flex Parts", brought up what appears to be a similar issue to yours, and yep, it was a failed Switch.

    The one poster who responded said that commonly just two things can go wrong with the 3401, the Power Cord and Connector, and the Switch.
    Mark, thanks a bunch for your information! Will be ordering a switch asap!

    Sent from my SM-G930V using Autogeekonline mobile app

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