SOLA Power Supply

Discussion in 'General Electronics Chat' started by pujulde, Aug 25, 2015.

  1. pujulde

    Thread Starter Member

    Jul 24, 2013
    95
    1
    Hi, I have SOLA Power Supply. When I switch it on with load it does not work. If I turn it on without load and after connect ones it works good. Can anybody give some advice? Thanks in advance. IMG_20150825_133551.jpg
     
  2. Dodgydave

    Distinguished Member

    Jun 22, 2012
    4,969
    744
    Looks like there's burning on the top diodes, do you have a circuit diagram or model number of the psu...
     
  3. pujulde

    Thread Starter Member

    Jul 24, 2013
    95
    1
    I checked them and they are OK. The model is SOLA SDN 5-24-100p. I could not find schematic diagram.
     
  4. alfacliff

    Well-Known Member

    Dec 13, 2013
    2,449
    428
    check the low ohm high watage resistors, one is to measure current for over current protection. I have found those burnt before. its a switching supply. check the setting of the over durrent adjustmentl.
     
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  5. pujulde

    Thread Starter Member

    Jul 24, 2013
    95
    1
    The place where the powerful resistor of 100 ohm installed is burned, but the resistor was good. Despite this I replace it with new one. The same problem.
     
  6. alfacliff

    Well-Known Member

    Dec 13, 2013
    2,449
    428
    look for several large surface mount resistors next to eachother. low ohm value.
     
  7. pujulde

    Thread Starter Member

    Jul 24, 2013
    95
    1
    OK, I will try, but I think there is not
     
  8. pujulde

    Thread Starter Member

    Jul 24, 2013
    95
    1
    I could not repair, its bad. Thanks for help
     
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