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Help with a SMPS please

Discussion in 'Power Electronics' started by frankdn, Feb 21, 2018.

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  1. frankdn


    Feb 21, 2018
    Hello, and thanks for reading! I'm looking for help with a switching power supply; I'd just like to know if it's operating properly. Since I know absolutely nothing about electronics, I'm here. The equipment is a model GPE603-140400W from "Golden Profit Electronics Ltd." (and may I add that as a capitalist I absolutely love their name). It has been powering a Cambridge Soundworks radio which went dark the other day. I need, first, to decide if the problem is in the radio or with the power supply.

    The supply has an LED which is flashing green about once a second and makes an audible click in synchrony. Is this normal?

    Can I (and how can I) test the output with an ordinary VOM?
  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    Jan 21, 2010
    Periodic clicking sounds from a switchmode power supply is never a good sign.

    I suspect that something is shorted, and a prime suspect is the output rectifiers.
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