Sond ok back lit ok but no display

What make and model receiver?

When you play a video on youtube. If you do not hear any sound then look at the bottom left on the lower boundary of the Video you will see a speaker icon.
Make sure that this sign is not displayed with a cross and that the sound indicator shows enough volume so that can be heard.

Good Luck!

First Option:
You Go to Phone Settings and In the Sound Setting and Set the High Volume IF Volume Setting Ok But Sound very Low
So
Secend Option:
Your Phone Ringer Default So Please change Ringer
And High Sond Will Solved

Try a different player.
I use VLC, it has all the needed codecs installed

dude gt ur cell phone a update.. itz free of charge. go fr the sony ericsson site and it will guide u fr the update..

Dear this is driver related problem , your existing sond card in board ..ok then insert the new one .............but sloution is that dcebal the sond card and inset new and after install the driver and after this sond card is working

capacitor related
fly back usually causes no power up

try to fine tune your tv using the remote control, or, if you had knowleged in electronics adjust the sound IF transformer using a wood stick or plastic don't use a metal in adjusting the IF

First u remove u r sound card and then start u r pc on without sond card ok some ten minutes then shut down windows unplug power cable then put sound card to mother board and start u windows, feed the driver for sond card it should be correct driver ok. I hope it ll work....

i got this problem once more. try to repair drivers of the sound card. maybe it isn't as complicated as it may sound. i once got a problem like this with a customer. just roll back or repair. maybe another re-installation won't fit as its already installed.