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  1. #1
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    DSP-Controlled On-Line UPS OLED shows Bypass NO Output

    Any body know the following online UPS .
    See the picture below


    The LCD display shows input 230 volt frequency 50Hz

    Buy No Output
    Shows Bypass anybody there to be help me ?

    some thing here http://http://circuits-collection.bl...d-on-line.html
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    •   Alt11th October 2017, 15:17

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    Re: DSP-Controlled On-Line UPS OLED shows Bypass NO Output

    Cannot see unit pictures, any advice on model?



    •   Alt15th October 2017, 09:37

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    Re: DSP-Controlled On-Line UPS OLED shows Bypass NO Output

    Your questions as usual lack of a better elaboration or at least less sloppiness: The attached picture is totally useless in the sense that it is impossible to read the silk legend on the top of the board. Another thing is that in the title says "bypass-no-output" but in the body of the post it is presumed you said "But-No-output" which are different scenarios. Also the link is dead, but you should already know.

    Anyway, back to the question: What have you measured so far? Is there voltage at the input and not at the output? If the only device between both would be supposedly one of the Relays, have you measured it to know if it is switching and has electrical contact ?
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    •   Alt15th October 2017, 09:59

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    Re: DSP-Controlled On-Line UPS OLED shows Bypass NO Output

    Quote Originally Posted by andre_teprom View Post

    Anyway, back to the question: What have you measured so far? Is there voltage at the input and not at the output? If the only device between both would be supposedly one of the Relays, have you measured it to know if it is switching and has electrical contact ?
    The online UPS OLED shows AC input voltage 230volt ,The Mode is BYpass mode But there no Output . I will upload more details tomorrow
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    Re: DSP-Controlled On-Line UPS OLED shows Bypass NO Output

    No need to upload more pictures, the only thing you have to do is to measure backwards from the output to input, checking where exactly the contact is interrupted. The by-pass operating mode is as simple as it could be, usually only one relay is what detaches the output from the input.
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    •   Alt15th October 2017, 19:27

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    Re: DSP-Controlled On-Line UPS OLED shows Bypass NO Output

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