Blaupunkt TV model W23/173I-GB-FHBKUP-DE no sound

[lineofstars]

Hi everyone.Im new here and obviously need your hand of help.
Suddenly the TV start making a strange sound to the speakers,than there the sound has gone.The speakers I have checked them connecting to other device.The audio jack output also does not work because I have tested with an earphone.
The exact tv model and info are:
Blaupunkt TV,model # W23/173I-GB-FHBKUP-DE
Ref B23C173TCFHD
Product code BW23R173BFBKPE404
Serial Number BW23R173BFBKPE404-107426 00808
Motherboard serial t.msd309.28b

Photos link to see the motherboard:
https://plus.google.com/photos/102793503591974069148/albums/6079107146329663217/6079107625735817218?pid=6079107625735817218&oid=102793503591974069148
https://plus.google.com/photos/102793503591974069148/albums/6079107146329663217/6079108071896586770?pid=6079108071896586770&oid=102793503591974069148
https://plus.google.com/photos/102793503591974069148/albums/6079107146329663217/6079108387635073554?pid=6079108387635073554&oid=102793503591974069148
https://plus.google.com/photos/102793503591974069148/albums/6079107146329663217/6079108753207936914?pid=6079108753207936914&oid=102793503591974069148
https://plus.google.com/photos/102793503591974069148/albums/6079107146329663217/6079109117947711538?pid=6079109117947711538&oid=102793503591974069148
https://plus.google.com/photos/102793503591974069148/albums/6079107146329663217/6079109475267788786?pid=6079109475267788786&oid=102793503591974069148
https://plus.google.com/photos/102793503591974069148/albums/6079107146329663217/6079109887551514674?pid=6079109887551514674&oid=102793503591974069148
https://plus.google.com/photos/102793503591974069148/albums/6079107146329663217/6079110207183580290?pid=6079110207183580290&oid=102793503591974069148
https://plus.google.com/photos/102793503591974069148/albums/6079107146329663217/6079110569102090482?pid=6079110569102090482&oid=102793503591974069148
https://plus.google.com/photos/102793503591974069148/albums/6079107146329663217/6079107550650379634?pid=6079107550650379634&oid=102793503591974069148
https://plus.google.com/photos/102793503591974069148/albums/6079107146329663217/6079107148706017746?pid=6079107148706017746&oid=102793503591974069148

There are 11 close up high resolution photos totally.First one shows the the entire board.
Wich is the step by step procedure to repair it?
What components make the audio circuit exactly?
Thanks in advance.
Peter