Only the front speakers work none of the surround speakers

Adjust the input control on the receiver to 2nd zone.

It is sad your having a problem with your
Benwin 5.1 surround sound system
If humming can be heard on all speakers, then it could probably

be on the power supply.


If it is only on the main SUB unit, then it could be the amp itself.

But check for power supply capacitors that supplies voltages to the

amps.Check for amp output DC voltages too.

the power surge probably did damage to your motherboard. if it only blew out your sound then you are lucky. most motherboards dont survive this well. since this is a laptop there isnt anything you can do about it. sorry

Did you try changing the front & center speakers to a higher level as well as setting the surrounds to a lower level? Are all speakers using the same wire gage?

LCD will display which speakers are active. And this depends on 2 things: the source signal and decoder mode.
If source signal is stereo, only front L+R speakers are used. For 5.1 signal (for example DVD over HDMI / optical/coax spdif) all speakers installed (which are not set to None) are used.
To listen to stereo input signal using all speakers, switch decoder to enhancer mode.

you have to test electrical out put, maybe loose wire inside or blown component

Look on your manual, page E16. Go into your speaker setup. Select your speakers (Front,C,Surround, Sub) and make sure each are selected as "small" (make sure you go through each one). If the surrounds are selected as "none" the rear will not activate and will light up as red on the display. Let me know if this helps.

it could be you need to put it in surround mode

Hi,
I don't have manual here, but try to go to Setup menu / Speaker setup / Manual Setup / Config and check if rear speakers are NOT set to None.

adjust your sound outputs with the remote and adjust the +/- settings on them and ten try another sound output adjust the stero effectsand try playing around with that and try cutting the speaker cable back about 2 inches and using a new peice of the cable to see if it's the cable causing the issue.