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Power supply Termaltake Smart Se 630w any voltage in output

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    #1

    Power supply Termaltake Smart Se 630w any voltage in output

    Hello everybody I try to fix thi power supply, I have voltage in bridge rectifier, and also in the large capacitor , so I thought the problem was in the pfc but then I found all mosfet ok(tested out of the circuit so I just moved on in the low voltage and here I found a short of one of the diode rectifier. I'll replaced it already but it's completely dead, I mean any stanby voltage and the other voltage is not present. I don't have oscilloscope to understand if the chip work how can I test it? Thank you for the help 🙏
    Tags: None
    #2
    Re: Power supply Termaltake Smart Se 630w any voltage in output

    pictures of the standby supply would help

    Comment

      #3
      Re: Power supply Termaltake Smart Se 630w any voltage in output

      You need to fix the stby voltage first. Post some high resolution, straight shot pictures and upload them using the attachment function.

      Comment

        #4
        Re: Power supply Termaltake Smart Se 630w any voltage in output

        Here's the picture guys . I hope the quality is good
        Attached Files

        Comment

          #5
          Re: Power supply Termaltake Smart Se 630w any voltage in output

          whats the part number on the 7pin chip in the center?

          Comment

            #6
            Re: Power supply Termaltake Smart Se 630w any voltage in output

            Originally posted by stj View Post
            whats the part number on the 7pin chip in the center?
            Hello here's the part number. But also as you can see I found 5v only 5v , about the rest of voltage nothing . Thank you
            Attached Files

            Comment

              #7
              Re: Power supply Termaltake Smart Se 630w any voltage in output

              What does it have for an supervisor IC? It’s on the secondary.

              Comment

                #8
                Re: Power supply Termaltake Smart Se 630w any voltage in output

                so standby does work?

                Comment

                  #9
                  Re: Power supply Termaltake Smart Se 630w any voltage in output

                  Originally posted by CapLeaker View Post
                  What does it have for an supervisor IC? It's on the secondary.
                  Hi thank you for your answer, if you mean those I think we found the problem.. As you can see from the picture one of these does give any voltage
                  Attached Files

                  Comment

                    #10
                    Re: Power supply Termaltake Smart Se 630w any voltage in output

                    That’s why I am asking about the supervisor. One of these 3 opto isolators you found is coming from the supervisor IC. If the supervisor detects something wrong, it will simply turn the primary of the psu off.
                    Figure out what supervisor ic it’s got and measure the voltage on all the pins.
                    You should see it mounted on the secondary of the PSU where all the cables (red, black, yellow etc) are.
                    Last edited by CapLeaker; 09-11-2023, 04:53 AM.

                    Comment

                      #11
                      Re: Power supply Termaltake Smart Se 630w any voltage in output

                      Originally posted by CapLeaker View Post
                      That's why I am asking about the supervisor. One of these 3 opto isolators you found is coming from the supervisor IC. If the supervisor detects something wrong, it will simply turn the primary of the psu off.
                      Figure out what supervisor ic it's got and measure the voltage on all the pins.
                      You should see it mounted on the secondary of the PSU where all the cables (red, black, yellow etc) are.
                      If it is this i got it
                      Attached Files

                      Comment

                        #12
                        Re: Power supply Termaltake Smart Se 630w any voltage in output

                        Hi guys, I followed the circuit of the' bad opto isolator' one leg goes through one little capacitor and the other one go into a kind of transistor (diode junction) then there are some smd resistance diode capacitor. I tested out the circuit the transistor and capacitor them are pretty good. So it's the opto isolator broken or the ic supervisor..? Thank you all for the answer

                        Comment

                          #13
                          Re: Power supply Termaltake Smart Se 630w any voltage in output

                          try swaping the isolator for one of the others and see if the fault changes

                          Comment

                            #14
                            Re: Power supply Termaltake Smart Se 630w any voltage in output

                            Fault protection latch Pin 3 on the supervisor is high, so it detected something and shut the PSU down. So one of the opto isolators has to have on the secondary side on both legs 5V.
                            I do know that the supervisor will also fire if the main filter caps are bad. Guess how I found out. Lol

                            Now, you got to figure out why this supervisor is shutting down the primary side of the PSU. The supervisor also has a protector detector function input pin 4. If that is high, guess what? Yepper, another external shutdown reason… Happy hunting!

                            Comment

                              #15
                              Re: Power supply Termaltake Smart Se 630w any voltage in output

                              Originally posted by stj View Post
                              try swaping the isolator for one of the others and see if the fault changes
                              Nothing changed...

                              Comment

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