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Monitor Audio BXW10

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    #41
    hi all,
    I ve just got a BXW-10 that works on power on (green) outputs sound but goes into standby (red) in about a minute. Any pointers where I should start looking please? Im suspecting the power supply and/or standby circuit if i could identify it.Thanks in advance for any help!

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      #42
      I assume that your 'power function switch' is set to auto? Have you tried it in the 'On' position, and if so does the speaker stay on all the time? Are you using the +12VDC Trigger input, and have you checked that voltage level from the amp is correct? Are you using the correct lead?
      If you're relying on the input signal to keep the speaker on, is the level from the amplifier set high enough? (You may have to re-calibrate your amp)
      If you look at the circuit diagrams posted earler, there are some notes about what logic levels to expect at the pins of the microcontroller (IC109), so that would be a good place to start if everything else is OK.
      My gut feeling (based on no other information!) is that it's a set-up issue rather than a faulty unit, so do check the manual for the correct connections. I drive my speaker from a Yamaha amp which provides a trigger voltage output, and it works perfectly.
      Good luck.

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        #43
        Originally posted by BenDwire View Post
        I assume that your 'power function switch' is set to auto? Have you tried it in the 'On' position, and if so does the speaker stay on all the time? Are you using the +12VDC Trigger input, and have you checked that voltage level from the amp is correct? Are you using the correct lead?
        If you're relying on the input signal to keep the speaker on, is the level from the amplifier set high enough? (You may have to re-calibrate your amp)
        If you look at the circuit diagrams posted earler, there are some notes about what logic levels to expect at the pins of the microcontroller (IC109), so that would be a good place to start if everything else is OK.
        My gut feeling (based on no other information!) is that it's a set-up issue rather than a faulty unit, so do check the manual for the correct connections. I drive my speaker from a Yamaha amp which provides a trigger voltage output, and it works perfectly.
        Good luck.
        Thanks for the suggestions, its powers on and plays for under a minute irrespective of auto or auto off and goes to standby. I can hear the relay clicking. Input signal is fine, I ve tried it from studio grade outputs (+4dB) and normal the behaviour is the same. I need to take the boards apart from the backplate they are kind of glued in (ugh).
        Will check the IC109. Thanks again for the help!

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