SB-TB4K power supply have bee sound on and LED off.


  • To support

    This morning, I hear a bee sound and saw the LED was off on power supply, and observe the selection switch can't functionand no light on.

    When I try to remove the power jag from SB-TB4K, the power supply's LED resume to ON and bee sound has off.

    I using meter to check power supply output, it's mesured 24.03v look normal. 
    I remove all connection on the SB-TB4K and plug back the power, issue come back again.

    What was the poblem and sulotion share?



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