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A friend of mine has a JBL 3.1 Soundbar that has a wireless subwoofer. They bought it years ago, but never hooked it up fully. Its had power all this time. I attempted to get it to work, the soundbar works but the subwoofer does not put out any bass. Its getting power, it connects to the soundbar, but not a thing comes from it. I suspect something in the amplifier burned out at some point, as it was powered all this time. I'm going to take out the amplifier on the sub to see if theres any visible issue, but beyond that, any suggestions on repair or perhaps where I can get a replacement amp for it? I've tried to find something online, but cant. At this point, I think it may be easier to just purchase a used sub of the same model.
 

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Wireless means Bluetooth, right? Has the sub been re-paired (pairing again sometimes helps) recently with the sound bar? Can test connection with another device ?
 
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