Aeg Pover B 1000 UPS PCB problem

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  • liniuks
    Member
    • Apr 2016
    • 15
    • Lietuva
    #1

    Aeg Pover B 1000 UPS PCB problem

    hi, i have Aeg Power B 1000 UPS. PCB Wont work. i removed pcb and have found a heated and burned component q30. the biggest problem is that, i cant read burned component label, because all front of component is burned out. could anyone help me know what component i need or have Aeg Power B 1000 schematic? I've attached ups, pcb and component photo. thank you.
    Attached Files
    Tags: None
    • CapLeaker
      Leaking Member
      • Dec 2014
      • 7976
      • Canada
      #2
      Re: Aeg Pover B 1000 UPS PCB problem

      Take a bit of 99% rubbing alcohol, an old toothbrush and clean that old mosfet up. What PWM is driving the gate of the mosfet? If the mosfet is shorted to the gate, you also have to inspect the whole gate drive circuit including the PWM.

        Comment

        • liniuks
          Member
          • Apr 2016
          • 15
          • Lietuva
          #3
          Re: Aeg Pover B 1000 UPS PCB problem

          i think pwm is st 3843b and i see its body cracked too. i attach pwm photo. tootbrush and alcohol wont help, mosfet all front cover is burned at 1mm deep

          Originally posted by CapLeaker
          Take a bit of 99% rubbing alcohol, an old toothbrush and clean that old mosfet up. What PWM is driving the gate of the mosfet? If the mosfet is shorted to the gate, you also have to inspect the whole gate drive circuit including the PWM.
          Attached Files

            Comment

            • CapLeaker
              Leaking Member
              • Dec 2014
              • 7976
              • Canada
              #4
              Re: Aeg Pover B 1000 UPS PCB problem

              Anything else in between the PWM and the mosfet?

                Comment

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