Forum > LCD TV forum

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

(1/4) > >>

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

Keith:
Hi your best option is to replace the main board.

http://www.ebay.co.uk/itm/MAIN-BOARD-TV-T-MSD309-28B-11235-/251673717340?pt=LH_DefaultDomain_186&hash=item3a98ec2a5c

U15 looks like it may be the audio amp IC, check for supply voltages to the chip, use an oscilloscope to check for audio input. try to inject an audio signal in to the IC and see if you get an output.The microprocessor chip or associated circuit  could also be faulty as this will control the volume, the eeprom or flash data may also be corrupt.

Best to change the board!!

Keith

lineofstars:
Hi Keith.
Thanks for the ebay motherboard link you provided.Amazing because the board is right in Madrid,20km away.
But really ,to replace the hole board just for the IC YD 1517p   FTBfY,....,its a bit wastey.
maybe I will be able to find the same IC,see the datasheet of it.If not,do you know an equivalent?

Keith:
It is actually a TDA1517P,

Good luck

watteau:
Hello,
Have you checked the electrolytic capacitors near the
TDA1517?
I had one that was short circuit and was shutting the IC down,
worth a check before changing the PCB.
Regards

Navigation

[0] Message Index

[#] Next page