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Thread: HELP Power supply broken... Bridge rectifier smokes... Coil heats up.

  1. #1
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    HELP Power supply broken... Bridge rectifier smokes... Coil heats up.

    I just wanna know what going on with my power supply. Earlier today I had it up and running no problem. Then I plugged it in again and the bridge rectifier started to smoke up. With no wires going out of the power supply it still smokes up. I am curious if I can fixed this unit by just replacing the bridge rectifier. Thanks

    http://cgi.ebay.com/38V-400W-CNC-Mil...QQcmdZViewItem


  2. #2
    Community Moderator Al_The_Man's Avatar
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    Probably shorted bridge, pick up a higher current one for replacement, did you have correct fusing in place?
    Al.
    CNC, Mechatronics Integration and Custom Machine Design (Skype Avail).

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.


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    No I don't have any fuses protecting my power supply at all, didn't think I'd need them. I only have them for my motor controllers and my steppers. How should I set fuses up for my power supply?


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    Community Moderator Al_The_Man's Avatar
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    There should be correct fusing, in the primary at least of your transformer.
    Also optional in the secondary leads to the bridge.
    Al.
    CNC, Mechatronics Integration and Custom Machine Design (Skype Avail).

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.


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