Sansui ctv model sv2905

Question edited for clarity.

Here is your circuit diagram. If you have the test equipment and understand it all go ahead.

https://masterelectronicsrepair.blogspot.com/2019/04/sansui-sv2918-circuit-diagram.html

This is the best advice though.

https://www.fixya.com/support/r29790007-repairing_own_television

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If you wish to get more; check the sites linked here. It has set-up code list & set-up procedure to many popular brand remote controls. One among it has general set-up codes to check with TVs and other devices are given, in the order of the 'device's brand name list' in alphabetical order. Pull up older posts. Search the sites by type in the brand name to your device in its search box at the top right part of the display window. It will help you to find the document easily.
http://remotesearch.blogspot.com/
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/
http://electrohelponline.blogspot.com/
Search the site by type in the brand name of your device, in the "Search box at the top right of the Home page display" to see the set-up codes to your device, with different brand remote controls.
https://www.youtube.com/watch?v=jsSCNCW3IbQ
https://www.youtube.com/watch?v=Qp-l1uh-5gE

www.alibaba.com.
Try this link.

Sansui Sv 21276G value of resistor R817 2K2 1/4 watt

Service manual is in PDF format. It cannot be send to you by this window.

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WOULD LIKE TO KNOW LOT NO OF SANSUI SV 2905 MODEL

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