Electric razor won't turn on anymore (pics inside)

Discussion in 'General Electronics Chat' started by Cretin, Jul 17, 2013.

  1. Cretin

    Thread Starter Member

    Dec 13, 2012
    68
    1
    So my andis electric trimmer was acting up again, and I read that an easy fix might just be a little facial hair buildup (don't worry, no pics of that)

    I unscrewed it and went to put it back together, and it doesn't seem to be working anymore. I plug it in and using my voltage detector I get a red indicator telling there is power running through the wire and up to the point on the electric razor where the feed splits and i have a free ground wire and a red wire coming out of the transformer. From there when I turn the electric razor on, it doesn't work (doesn't turn on)

    Now to be honest, I have tried powering on the device while orienting the red and black wires in both possible positions...is there a possibility I destroyed the transformer, or any other components inside of the electric razor?

    What are some things I can test to:

    1: Make sure I have oriented the black and red cables accordingly

    2: Find out why it's not powering on


    I've got my meter, i've got a bunch of tools...and I would love your help! (pics below)

    [​IMG]


    [​IMG]
     
  2. Metalmann

    Active Member

    Dec 8, 2012
    700
    223
    I have repaired my clippers, but the guts don't really look like that. I just had a bad wire. Someone will be by to help you out.
     
  3. Dr.killjoy

    Well-Known Member

    Apr 28, 2013
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    It shouldn't matter which way you apply the voltage because your using the ac to oscillate a electromagnetic field causing the head to be pulled because the rise and fall of power ... what I would do is see if the coil is getting power and then make sure you have a working electromagnetic field working in order to oscillate the arm ... Then go over the arm and make sure it moves freely and free of hair and dirt causing it to stick in place..
     
  4. Cretin

    Thread Starter Member

    Dec 13, 2012
    68
    1
    That's a great start Dr. Killjoy, but how do I test the coil to see if it is getting power?
     
  5. Markd77

    Senior Member

    Sep 7, 2009
    2,803
    594
    You should be able to hear the coil (and metal armature) buzzing. If they are then it's a mechanical problem. If they are anything like the one I took apart to see how it works, then there should be a spring, which may need adjusting to make it resonate. I think there was also a capacitor in there which could be dead. Capacitors die a lot.
     
  6. ian field

    Distinguished Member

    Oct 27, 2012
    4,413
    782
    If the coil is getting power and isn't open circuit - it'll at least hum.

    Vibration can fatigue the wires inside the casing and the motion of using the shaver can fatigue the mains lead at the point where it enters the strain relief gland.
     
  7. Cretin

    Thread Starter Member

    Dec 13, 2012
    68
    1
    It hasn´t vibrated at all no matter how i orient the wires, now i´m thinking i might be putting it back together incorrectly...

    As you can tell from the images, there are two terminals to power the coil, and i have attached the terminals to the two holes that lead in from the main switch to power the razor. I am not sure what the problem is, but I will test again for the coil to see if i get a buzz.


    Also, a question....if i plug it in while the coil out of the casing is that dangerous, or should i always put all of the pieces back together, and then try to power it on:confused::confused:
     
  8. Metalmann

    Active Member

    Dec 8, 2012
    700
    223
    Also, a question....if i plug it in while the coil out of the casing is that dangerous, or should i always put all of the pieces back together, and then try to power it on?



    Should not hurt anything at all.

    Sure you are not pinching something on reinstall?
     
  9. Dr.killjoy

    Well-Known Member

    Apr 28, 2013
    1,190
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    Well it's not dangerous unless bare wire are exposed and you touch them ...You can test the coil to see if it magnetic with a screw driver and see if it pulls the crew driver.. If it doesn't then the coil is shot and the mechanical part can be moved with your hand and make sure when putting it back together make sure there is a small space between the arm and the coil ... I have a high end oster shaver that I will open up if you want and show you ...
     
  10. Cretin

    Thread Starter Member

    Dec 13, 2012
    68
    1
    Alright I´m going to give that a go...and Dr. Killjoy if you´ve got time that´d be great! I´m a much better visual learner:)
     
  11. Dr.killjoy

    Well-Known Member

    Apr 28, 2013
    1,190
    156
    Cretin likes this.
  12. Cretin

    Thread Starter Member

    Dec 13, 2012
    68
    1
    Well well...I got it working....the culprit?? A loose wire head, just a little bit of solder, and works like new :)

    Thanks all for your help!
     
  13. ian field

    Distinguished Member

    Oct 27, 2012
    4,413
    782
    Depends on the construction and how the armature is fixed to the frame.
     
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