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Sony SA-WMSP87 Active Sub -- No sound, but can still turn on/off

Hi,

I have an active (powered) subwoofer that came with my Sonyhome theater in a box system. I am not sure what the home theatersystem kit model number is any more, but the model number of thesubwoofer is SA-WMSP87. Just this past weekend, the subwoofer stoppedproducing any more sound. When plugged into the electric outlet, I canstill turn on the subwoofer when the power button is pressed. Just nosound comes out. I swapped the RCA from the A/V receiver to thesubwoofer, and still no sound. I also borrowed a similar Sony poweredsubwoofer from a friend and connected this to my A/V receiver to makesure it's not the A/V receiver or the wire.

What could be wrong? Please, any help would be greatly appreciated.

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  • Anonymous Jan 24, 2009

    I have the same problem, exactly as described.

  • templemans Jan 28, 2009

    I have an active (powered) subwoofer that came with my Sonyhome theater in a box system. I am not sure what the home theatersystem kit model number is any more, but the model number of thesubwoofer is SA-WMSP87. Just this past weekend, the subwoofer stoppedproducing any more sound. When plugged into the electric outlet, I canstill turn on the subwoofer when the power button is pressed. Just nosound comes out. I swapped the RCA from the A/V receiver to thesubwoofer, and still no sound. it worked great for years

  • brattchow Feb 22, 2009

    Same problem here

  • cbcpete Apr 17, 2014

    check the fusible resistors R403 and r 404 (10 ohms fusible resistors 1/2 watt) and also R 314 (1 ohm fusible resistor)

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  • 15 Answers

Replace R404.... Good luck !!!!

Posted on Feb 03, 2011

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Plug an RCA cable into the "Sub IN" jack on the back of each subwoofer.


Connect the subwoofers to wall outlets and turn on each unit by pressing the power button, typically located on the back panel.


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Tips & Warnings

Use subwoofers that are closely matched in power, as rated in watts, when using two subwoofers in a home theater setup.

Disconnect the subwoofers from the power supply while making the audio connections.


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