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Does not turn on NS-SW200 subwoofer- Service Manual

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  • #1

    Does not turn on NS-SW200 subwoofer- Service Manual

    Does not turn on NS-SW200 subwoofer. I was able to find the service manual but the version is different than the unit I have. Can anybody help me?
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  • #2
    How about uploading the schematic you have and telling us what's different? Is the power supply similar? If so, check power supply voltages. Maybe some pics would help. For anyone else participating, this is a Yamaha sub.
    "I took a photo of my ohm meter... It didn't help." Enzo 8/20/22

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    • #3
      Is it the same as this? Click image for larger version Name: Screenshot 2022-03-29 at 07.27.25.png Views: 0 Size: 337.0 KB ID: 956734
      Check the flow chart, are all of the voltages present when sound is applied to the inputs?

      There are many different models but all work in a similar way.
      Click image for larger version Name: Screenshot 2022-03-29 at 07.35.44.png Views: 277 Size: 67.2 KB ID: 956735
      Last edited by Jon Snell; 03-29-2022, 07:36 AM. Reason: More detail added.
      Support for Fender, Laney, Marshall, Mesa, VOX and many more. https://jonsnell.co.uk
      If you can't fix it, I probably can.

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