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Switch mode power supply. Help!

Discussion in 'Troubleshooting and Repair' started by juh, Feb 21, 2013.

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  1. juh

    juh

    27
    0
    Feb 21, 2013
    I tried repairing a switch mode power supply. Whenever I measure the output, it gives the expected voltage rating. But when I supply it to a load, it does not give anything. What can be the problem? Please help. Thank you!:)
     
  2. MrEE

    MrEE

    84
    0
    Apr 13, 2012
    what kind of load? Try a light load first and gradually increase. see what happens
     
  3. juh

    juh

    27
    0
    Feb 21, 2013
    it is the power supply for the console of a CT scan. we already tried that. is there anything else we could do? tnx!
     
  4. MrEE

    MrEE

    84
    0
    Apr 13, 2012
    post a picture of the supply if possible
     
  5. juh

    juh

    27
    0
    Feb 21, 2013
    im sorry. i dont have one now. but it outputs 24v 12a. what other load can we test it with? i actually have an improvised load tester. but i am not 100% sure if it can handle the power supply.
     
    Last edited: Feb 21, 2013
  6. Sinewave

    Sinewave

    129
    2
    Feb 15, 2013
    Going into overload?
     
  7. duke37

    duke37

    5,364
    771
    Jan 9, 2011
    Try two 12V car bulbs in series. They will take quite a large current when cold but if they are 36W, they should run at 3A.
     
  8. juh

    juh

    27
    0
    Feb 21, 2013
    i have tried with a 24V 4.2A load. nothing still.
     
    Last edited: Feb 22, 2013
  9. austin

    austin

    1
    0
    Mar 5, 2013
    try with another power supply, it's may be the loard 's problem
     
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