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MPA-101 Amplifier powers on, receives source signal, the fuse is not blown inside, but no sound comes out of the amplifier. The amp is pretty new, doesn't even have dust inside the unit.

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  • daroll19 Oct 14, 2008

    This is a Jamo amp that I am trying to use to power a passive subwoofer. It powers on, the LED in the front remains constant, as the manual states it should from it knowing it has a signal, but no power output in Stereo or Mono Modes. (The LED is NOT red, but Blue.) I was guessing some internal problem, but I am not technicial by any stretch. Thanks for the response. daroll19



    And literally, to state it again, the amp looks un-used in its appearance.

  • jacobsenlc Dec 16, 2008

    I have the same exact problem with TWO MPA-101 Amps.

    L Jacobsen

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Hello, is this a Radio Shack PA amp or Jamo amp? The unit is probably in "Protect" mode. Is this a PA system or a receiver...receivers have a protection circuit that will not let the speaker relay activate if the amplifier output section is shorted and sending voltage towards the speakers...so they won't fry!!The speaker relay should activate within 3 to 5 seconds if your output section is ok.

barneyluc

Posted on Oct 14, 2008

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Posted on Jan 02, 2017

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