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transformer repair

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  • Member since
    October 2009
  • 1 posts
transformer repair
Posted by mwchicago on Saturday, October 17, 2009 2:28 PM

I have a couple of CMI MW101 transformers that are not working properly. Can anyone advise where I can get them repaired? I tried to contact CMI but it looks like they might be out of business.

  • Member since
    August 2001
  • From: US
  • 791 posts
Posted by steamage on Saturday, October 17, 2009 4:50 PM

 I have a CMI that had the walk-around control on a wire that quit working.  But the transformer was still good, so with a electronics friend to help.  The electronics was tossed and converted to a straight 12 volt rheostat.   It will operate the industrial company diesel.

  • Member since
    February 2005
  • From: Southwest US
  • 12,914 posts
Posted by tomikawaTT on Saturday, October 17, 2009 11:45 PM

If you are comfortable working on electrical and electronic devices, or have a friend who is, you can open the case and check out the innards.  Worst-case scenario, you might simply gut everything but the step-down transformer and reduce it to an AC power supply for lights and accessories.  Or the problem might be something as simple as a failed solder joint.  Until the case is off, you won't know.

OTOH, if you aren't familiar with such things, it might be less expensive to replace.  The few electronic repair folks still in business charge a lot for their time.

Chuck (Modeling Central Japan in September, 1964)

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