Answers.Body: <p>Just repaired one...</p>
  <p><a href="https://youtu.be/XGyY8KtDnfA" rel="nofollow noreferrer">https://youtu.be/XGyY8KtDnfA</a></p>
  <p>Pry it open by using a precision knife on the lip of the bottom, using care to not damage the case:</p>
  <p><a href="https://i.sstatic.net/y7e6z.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/y7e6z.jpg" alt="opening the case" /></a></p>
  <p>Inside you'll find a coil of copper wire. Check that the ends of the wire are properly soldered to the terminals, and re-solder if needed.</p>
  <p><a href="https://i.sstatic.net/hBd6w.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/hBd6w.jpg" alt="Interior view showing copper wire coil" /></a></p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2024-02-22T15:01:19.810Z
Answers.LastActivityDate: 2024-02-22T16:21:46.817Z
Answers.LastEditDate: 2024-02-22T16:21:46.817Z
Answers.UserDisplayName: DOUBLE 'O' PRODUCTIONS
Body: <p>My son caused me to dig up my old 12V LEGO trains. Surprisingly they mostly work, except for <a href="https://www.bricklink.com/v2/catalog/catalogitem.page?P=70026&amp;idColor=9#T=C&amp;C=9" rel="nofollow noreferrer">one part</a> - Electric, Train 12V Remote Control Switch Motor 4 x 8 x 1 2/3:</p>
  <p><a href="https://i.sstatic.net/ddhjF.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/ddhjF.png" alt="enter image description here" /></a></p>
  <p>This is the motor that drives the switches and railway crossings. I have 2 broken ones (and 2 working ones). One of them vibrates and buzzes a little but does not flip.  The other one is completely dead and the ohmmeter gives a broken connection.</p>
  <p>Does anyone have anything that might me help fix them? Photos about how to open them, etc...</p>
  
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2021-04-13T12:00:19.003Z
Comments.Text: I doubt getting in there will be very easy, but I'd start on the vibrating one.  My 4.5V Technic motors  of similar vintage spin over but are very easily stalled.  I suspect the bearings need at least a good clean, possibly light grease but it depends on the details when you get inside
Comments.UserDisplayName: Chris H
Tags: <motor><trains><repair><12v>
Title: Repairing a 12V switch motor
UserDisplayName: hyperman
ThreadText: # Repairing a 12V switch motor
  
  (Asked by: username_0 on 2020-06-19)
  
  My son caused me to dig up my old 12V LEGO trains. Surprisingly they mostly work, except for [one part](https://www.bricklink.com/v2/catalog/catalogitem.page?P=70026&idColor=9#T=C&C=9) - Electric, Train 12V Remote Control Switch Motor 4 x 8 x 1 2/3:
  
  [![enter image description here](https://i.sstatic.net/ddhjF.png)](https://i.sstatic.net/ddhjF.png)
  
  This is the motor that drives the switches and railway crossings. I have 2 broken ones (and 2 working ones). One of them vibrates and buzzes a little but does not flip. The other one is completely dead and the ohmmeter gives a broken connection.
  
  Does anyone have anything that might me help fix them? Photos about how to open them, etc...
  
  **Tags:** motor, trains, repair, 12v
  
  > **Comments:**
  > **username_1**: I doubt getting in there will be very easy, but I'd start on the vibrating one.  My 4.5V Technic motors  of similar vintage spin over but are very easily stalled.  I suspect the bearings need at least a good clean, possibly light grease but it depends on the details when you get inside  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_2 on 2024-02-22. Score: 3
  
  Just repaired one...
  
  <https://youtu.be/XGyY8KtDnfA>
  
  Pry it open by using a precision knife on the lip of the bottom, using care to not damage the case:
  
  [![opening the case](https://i.sstatic.net/y7e6z.jpg)](https://i.sstatic.net/y7e6z.jpg)
  
  Inside you'll find a coil of copper wire. Check that the ends of the wire are properly soldered to the terminals, and re-solder if needed.
  
  [![Interior view showing copper wire coil](https://i.sstatic.net/hBd6w.jpg)](https://i.sstatic.net/hBd6w.jpg)
  
  
  ---
  
  