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 photos totally.First one shows the the entire board.
Wich is your step by step procedure to repair it?
What components make the audio circuit exactly?
Thanks in advance.

 

[lineofstars]

Hi again to all of you.
First ,with your help,I want to see IF the audio IC YD 1517p is good.
Link to see the datasheet of the audio IC:
https://drive.google.com/file/d/0B72PSl5kuidmSTBQQ3g0eTZkVDQ/view?pli=1


Turning the TV on, I have checked the voltage using the multimeter,the values are:
Vcc=12 to pin#7
1/2Vcc=0 to pin#3
Rest of the pins voltage=0.

Turning the TV off, In diode mode by multimeter with the black probe to GRD and red probe to the pin
#1 value is 796
#2 it beeps
#3 value is 796
#4 it beeps (why?)
#5 it beeps
#6 value is 792
#7 value is 1755
#8 starts from 1800 and goes to OverLimit
#9 value is 797
#10 to #18(the last pin that the IC has) it beeps cause is the GRD.

Turning the TV off, I have checked the resistance Ω(ohm mode) by multimeter with the black probe to GRD and red probe to the pin
#1 value is OL(over limit)
#2 value is 0
#3 value is OL
#4 value is 10 Ω ohms
#5 value 0
#6 value is OL
#7 value is OL
#8 value is OL
#9 value is OL
#10 to #18 value is 0
Based on this measurements please give me a hint about what is your idea if the IC is good,or guide me to do other measurements,or technics using the multimeter,beacause I only have this kind of measurement tool.
Are the above values correct?