hi,
I need bios to TV Sony KDL-50W829.

это не материнка, это T-CON, прёмная часть порта LVDS, прошивка ищется по модели матрицы.
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и если у вас искажены цвета, то шить ничего не надо , поменяйте гаммакоректор.

hi,
I have problem with TV on. After conect AC, I see on my power supply that TV start to 0.50A and after few secend is off.Only red light is pulsar on stay by. I have 3.3V on power button. I had damaged power supply after storm. I need program bios.

Hi
If blinks 5 times - no panel response.

If LVDS cable without damage and all voltages level is normal, you can try downloading update files from official site to recovery your TV.
Download update files from this link: Aktualizacja oprogramowania układowego do wersji v3.004
Copy files to USB drive (FAT32/NTFS).
Install USB drive on TV and power on.
If yellow led begin blinking - system update started. Please wait some time.

May be its help you.