Humming sound from left spesker

check the audio output on the audio board check voltage very low

I WANT YOURE DRIVER MOTHER BOARD M266A

This is likely due to a problem with the amplifier. You may have turned up the amp to the point of overdriving the speaker. The distortion at these high levels cause clipping and turn what was once crisp, clear sound into a muddied, garbled mess.

If the speaker is left connected to that source long enough, damage to the speaker and the amp may occur.

Without changing positions of the speakers: You can disconnect the affect Front or Rear L & R speakers and swap them (connect the L speaker to the R output of the amp and vice-versa). If the buzzing / hum "moves" to the other speaker, then the amplifier has the problem. If the buzzing / hum stays with the same speaker, the speaker has issues and is likely "blown".

Either way, it is probably not going to be a "cheap fix"

Good luck!

This sounds like a dry capacitor on the input / output audio circuit or a dry solder joint on the IC chip left output.

1st you check sound card driver installed in the laptop. If it is install then problem in speaker.

Good day. The wiring is as follows:

Left front + orange/gree
Left front - black/white
Right front + white/green
Right front - black/white
Left rear + pink/green
Left rear - blue/orange
Right rear + pink/blue
Right rear - green orange

Hope this helps. Good Luck and please rate.

Any computer or music shop should have those jacks handy.

humming is caused by defective amplifier.either left or right.unless you connector is faulty.try changing the connection cords, first. if not, then call a tech for mano y mano analysis.

Either you have it configured incorrectly this time around, or the settings are defaulted back to original on your DVR........ adjust your DVR sound properties/settings. and check all wires/connections as well.

check in my computer properties device manger .
check that sound driver install correctly.
ther eis not any yellow exlamanATION Mrk.