If you do dig into it, keep in mind it may be more of an educational field trip than a successful repair. If the former, (1) how good are you with a screwdriver, soldering iron, and multimeter and (2) how badly did you need new speakers anyway? - View image here:. First off, if the PSU has a three-prong plug, is it plugged into a properly polarized and grounded mains outlet? If so, is the power supply integrated into the sub-woofer, or is it an external brick? If the latter, you might be able to find another similar unit to test it against.
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