Question about Dyson DC16 Root 6 Bagless Handheld Cyclonic Vacuum

3 Answers

Will only run for 2or3 sec. then shuts down. power is good

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  • jeff_axon
    jeff_axon Feb 26, 2013

    Did as you suggested removed the transistor and put a bridge across A & C but still stops but if help in a surtain position it seem to run longer any more ideas

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The problem belive it or not is a simple fix...if u are electronic minded,,

you need to remove the collection pot / and the battery ..

now where the serial number is are 2 screws bellow remove them..

open it up behind is a pcb board,, now.. there is a security screw on the pcb ,, take that out also take both digital motor cable out pull up ,,,the red one that is..
then there is a white plug pull that off as well..

now take the pcb board out carefully as there is a long board that goes directly up into a hole in the top ..as u pull it down u will see,, now this is the bit we want right at the very top of that board is a surface mount transistor,, 3 legs,,

now we need to totaly remove this,,, i used solder braid,, to remove,, now throw it away this is the problem..
now where the transistor was is like this a,b,c

A

B C


now 'A' being right at the top of long board looking at the board and 'B' being to left and 'C' being to the right with long board facing up....

NOW SOLDER 'A' & 'C' TOGETHER WITH A FINE PIECE OF WIRE,,
this is a simple trick comfuses the epprom into thinking the filter is on,,
as there is a little magent in the filter area big blue one that protects the motor,,,, now then , u must always clean the filter,,, dont forget,, as this little transistor goes faulty for some unknown reason,, must be a cheap magnetic nand gate switching transistors... this will get it working spot on i know as i have fixed loads..... found this out a few days ago after buyng 2 off ebay,, and took me allday to find the fault after replacing parts eventually i found this little guy was causing all the trouble..this will fix all these faults bellow,

1.) WORKS FOR 10 SECONDS THEN GOES OFF,,(also make shure your charger is giving out 28volts with a avo meter) and battery is charged for around 3 hrs fully ...

2.)FLASHING RED L.E.D (100% FIX) as this is filter cannot be detected..
reason it will work for a while is faulty transistor ,,,reads then 10 seconds later wont,,,epprom goes into fault mode take a while for it to reset,

I HOPE THIS HELPS SOME PEOPLE AND SAVES THEM 60£ FOR THE COMPLETE SHELL AT DYSON.. A 20MINUTE JOB WILL SAVE U A FORTUNE.. AND IF U HAVE THESE LYING AROUND U CAN NOW GET THEM BACK UP AND RUNNING WITH THIS SIMPLE FIX..

best reguards lee,,

Posted on Jun 26, 2010

  • 10 more comments 
  • bbmbreyes Oct 03, 2010

    thank you, works great, easy instruction to fallow. Bill

  • jnasonsprint Dec 18, 2010

    Thank you promo7uk.

    I just completed your recommended revision to the PC board and after charging the battery, your revision corrected the problem. I was considering buying a new battery for $60 and I would not have corrected the problem. The Dyson DC16 now runs better than it did when we purchased it about 3 years ago.

    Good instructions, however I would advise the reader that the PC board surface mount components are very small and require a low wattage soldering iron with a very small tip. Also the small screw that holds the PC board is a TORX number 6. That is the only tool I had to purchase to make the revsion.

    Thanks again,

  • dandatk Dec 27, 2010

    Thank you for posting all of your hard work and troubleshooting. It works great.

  • PlayThatMusi Jan 02, 2011

    This is my issue.
    1) I pull the trigger.
    2) The vacuum turns on for about 1 second.
    3) The Vacuum stops and the red light flashes.

    Performing promo7uk's procedure above did not fix my issue.

  • Andy2011 Jan 06, 2011

    Thanks for this excellent fix !! Saved me a lot of money as I would have tried a new battery first which is £45. For those who haven't tired I recommend doing this first as very simple to do.

    For information, I used a sharpe knife blade (stanley) and just cut down on the 3 prongs which hold the magnetic switch. If you just apply a little pressure between the prong on the inside which is facing the black switch, they cut easy and the blank square just falls off - also leaves the prongs extended to make new solder easy.

    As for cable, I just took a piece of normal electric cable used on anything i.e. extention leads etc. Cut open to reveal the 3 internal cables - live, earth, neutral. Then cut one of these wired and take about 4-5 stands of the copper wire, twist together to make a small wire and that worked fine for me.

    Tested with filter off and worked so knew the switch was fooled. However it did still show red light and only worked for 3 seconds still before switching off. Thought it didn't work, but then charged up and now get green lights on and stays constant - something I haven't seen for 2 years now.... Thanks Again !!

  • Sam Damico
    Sam Damico Jan 16, 2011

    This fixed one problem, but my battery is 3 years old and needs replacement. Is there any econimcal way to replace the battery? I see them on Amazon for $56. I opened the case and see the 6 Lith-ion batteries but they cave-in quickly, I get 26v at full charge, then when I use the vacuum they drop to 16v.

  • Anonymous Jan 29, 2011

    thanks for clear, easy to follow instructions.
    unfortunately, that hasn't had any effect on the problem.
    The motor stil spins up for about a second, then cuts out and the red battery light flashes.
    I'v checked the connections indicated, and charged the battery, but no joy.
    could anyone help me with debugging this please?

    The larger IC component (is this the eeprom?) has a motorola badge and the markings (i think) C6 HV 785-021. I can't find a data sheet for this component, or even any mention of it on the web !

    any help would be much appreciated

  • Anonymous Jan 29, 2011

    thanks for easy to follow instructs. unfortuntaly didnt solve problem in my case.
    motor spins up then cuts out after a second, and the red bettery light flashes.
    I'v checked the connections at A B

  • Dan the man w no tan Oct 19, 2011

    You sir, are THE MAN!! Found it on eBay cheap not working $50. Buy soldering iron and solder ($7), and order it. Start taking it apart, that little torx screw is REALLY little. Back to discount hardware store, bits for $5. Get it apart and that black thingy doesn't come off. Reread your post, don't know what "solder braid" is. YouTube video shows it's another dang tool I don't have. Off to RadioShack, they're out. Go home, after a while decide I'm tired of obstacles and spending money, rip black thingy off. Monkey around with microscopic wire for 30 minutes, finally get it on there, burn my hands bad twice. Put it together and now 3 lights blink at me. Angry because I just wasted $60, and I'm not handy.
    The next day, decide to run at it again, take it apart, 10 minutes. Clean up my mess around solder to make sure no conductivity to third post, try again. Immediately drop massive glob of solder on my wire and start panicking. Somehow pick it up again with the iron and decide that's enough. Clean it up again with razor, slowly put it together and realize I'm going to be disappointed again if it doesn't work.
    I'll be danged if the thing didn't fire right up and work! I feel like I did when I put hardwoods down on the whole first floor! I am a handy man!
    I've replaced two broken screens on the kids' iPhones too with my new tools.
    That crappy soldering iron is going in the trash before I really injure myself....
    But Thank You, this thing will be pretty cool around the house.

  • cappy795
    cappy795 Feb 26, 2012

    fix did not work !!!!

  • Russ Franey Oct 13, 2013

    fix #3- If you liik on the blue filter frame there is a small round magnet in bottom left corner, drill down to back of magnet on other side of frame, set frame back in holder and drive magnet out until it makes contact with grey cube. magnet is long enough for frame to retain it therefore preserving your filter detection fiunction.

  • williams_aa Jan 17, 2015

    Lee's solution Worked a treat. First time soldering. Can't believe it. Thanks

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For those not so electrically adept there is a simpler solution. if you buy a small fridge magnet with a clip from a dollar store, pop out the small round magnet and crazy glue it to the sensor located on the bottom left of the inside housing of the larger pad filter the unit will run. The bottom left part is grey and shaped like a square.

Posted on Nov 11, 2011

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  • 11 Answers

Purchase a large hammer and a pair of steel toe cap boots,adhearing to health and safety is a must at all times,then set about the offensive item in quick 10 second bursts

Posted on Feb 21, 2014

  • maurice guenser
    maurice guenser Feb 21, 2014

    purchase a large hammer and a pair of steel toe cap boots,adhearing to health and safety is a must at all times,then set about the offensive item in quick 10 second bursts

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