The reason why the computer speaker subwoofer does not sound
The subwoofer does not sound check steps:
1. First, confirm whether the subwoofer is normal. When the power is turned on, adjust the volume of the subwoofer to the highest level, and put your ear close to the subwoofer to hear if there is any sound or noise. If there is, the speaker is basically normal. If possible, it is best to use a multimeter to test whether the speaker impedance is normal in the off state. The most likely problem of the speaker is the open circuit of the paper cone braided wire or the open circuit of the voice coil;
2. If the speaker is normal, it is necessary to confirm that the problem lies in the power amplifier stage or the front set level. Input a signal at the middle tap of the bass volume potentiometer (you can touch it with a metal tweezers or a screwdriver). If there is sound from the speaker, the power amplifier circuit is basically normal. If not, the problem lies in the preamplifier or subwoofer separation circuit. The most likely problem of the power amplifier is the damage of the power amplifier tube or the power amplifier integrated block;
3. If the power amplifier is normal, it is basically the damage of the pre-shipment integrated block.
The computer subwoofer sounded one sound and the other did not sound
1. The problem of the connecting line
Swap the two pairs of wires connected to the speakers and see if the speaker still doesn’t work. If the speaker still does not sound, the components in the speaker are damaged; if, after changing the connection cable, the original sound box sounds, and the original sound box does not sound, it is the computer sound and the previous part. Fault. If both speakers are ringing after changing the cables, it means that the original cable is loose.
2, the sound card setting problem
Open the setting interface of your sound card in the control panel (or double-click the system tray speaker icon), check if the channel balance is adjusted to the center, if not, adjust the left and right channel balance to the center.
3. If it is not the sound card setting problem, then the search is the sound card hardware failure, sound card output jack failure or power amplifier, speaker failure
p>
A. Insert headphones into the output jack of the sound card. If the left and right channels of the headphones are ringing, it means that your speaker amplifier circuit is faulty or a speaker cable is broken. If the same channel of the headphones does not ring, it may be a problem Faulty sound card or faulty jack.
B. If the two speaker jacks can be interchanged, switch the left and right channels. If the other speaker does not sound after switching, the amplifier is faulty. If the speaker still does not sound after switching, it is Speaker failure.
C. If it can be confirmed that the power amplifier or speaker is faulty, please go to the dealer for a new one. If it is confirmed that the sound card is faulty, it can only be sent to the host for repair (the sound card can be replaced for the independent sound card, and the motherboard may be replaced for the integrated sound card).
I believe that with the above methods, it can help you when you encounter the sound of one sound and no sound, and you don’t have to go to the repair shop for nothing. The above is the content of the reasons and solutions for the sound of one sound but not the other, I hope it can help netizens.
