09-25-2013, 01:51 PM
Did you say that the transformer did not draw high current when you removed it from the chassis and powered it up? I am a little confused by your description.
If you have the proper secondary voltages when powered up outside the chassis and it does not draw excessive current, then there might be a short from the metal case or core laminations to one of the windings. You might check with an ohmmeter for a short from each winding to the case. If there is a short, it could be something as simple as damaged insulation on one of the leads under the housing or where they exit the case.
Might be worth checking before you order a new transformer.
If you have the proper secondary voltages when powered up outside the chassis and it does not draw excessive current, then there might be a short from the metal case or core laminations to one of the windings. You might check with an ohmmeter for a short from each winding to the case. If there is a short, it could be something as simple as damaged insulation on one of the leads under the housing or where they exit the case.
Might be worth checking before you order a new transformer.
