8 blinks from a sony bravia model klv-32s400a tv

https://us.en.kb.sony.com/app/answers/detail/a_id/32192/c/65,66/p/61659,63315,63318/

A short circuit with its main board component, can make 8 blinks of standby/power light. These blinks [flashes] are fault indication. You can get an idea about the faulty stage circuit inside the TV, by the number of these blinks. Count it carefully, by switching it ON and OFF, more than 2 times at least, so that, you can make sure about the number of these blinks. If you wish to get more details, check the site linked here. Surf the site in "MOSAIC" view.
http://electronicshelponline.blogspot.com/

Contact the nearest authorized service center for Sony at your town. The parts numbers to Sony might vary time to time. Only service center engineers can provide the correct number of part number used.

Remove all audio accessary frm your tv then try

super tips. thanks

Tries websites like Shopjimmy.com,Ebay.com to buy refurbishes Sony LCD tvs PCB boards.These two websites have very extensive Sony LCD tvs PCB boards.

HI:
This is due to a faulty digital board, your board has failed replacement is the only option.

set brightness at picture stting

This seems like a T-con board problem as its responsible for several picture functions including color convergence. Or it could be a bad LVDS cable (inside the TV) I can ship you a new T-caon board for $150.00 or take it too your local shop repair shouldn't cost more than $250.00....
http://tvtechwork.webs.com/