Check the speakers to see if the power cord is connected and that the speakers are receiving power.
Many powered speakers, especially speaker systems with subwoofers, have fuses. If there is no sound coming from the speaker, not even a humming noise, remove and replace the fuse. Even if you do not think that the fuse has blown, it is a good idea to swap the fuse to make sure. If the fuse is still good, you have a backup fuse.
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Turn off power to the subwoofer and unplug power to the speakers.
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Remove the fuse cover and then the fuse, and look through the glass cylinder. If the wire inside is separated, has dark spots, or burn marks, replace the fuse. If the fuse looks good, swap the fuse anyway and keep the older fuse as a spare.
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Buy a new fuse. It is a good idea to take the old fuse to the electronics store when purchasing the new fuse. This way, the old fuse can be used to make sure it matches the new fuse purchased at the store.
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Install the new fuse, replace the fuse cap, apply power, turn the speakers on, and test for sound.
To prevent damage to the speakers and to prevent fuses from blowing in the future, keep the following items in mind when using the computer:
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Turn off the speaker volume control before applying power to the speakers.
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Like a high-quality home stereo system, it is not good to raise the volume more than half the range of the control knob. Doing so reduces the quality of the sound and is harder on the speakers. Poor sound quality occurs when lower sound levels are raised to a peak level. Lots of sound occurring at one peak level stresses the speakers.
Play a sound. If sound problems continue, test the sound hardware using HP Support Assistant. For more information, see
Testing for Hardware Failures.