hitachi 50sbx78b need help no power

[dafaic]

I have taken the back door off plugged it in and watched 4 green led's light up then another 3 and boom they all go out and the red protection light flashes. I have 8 Green led's all together and I can see the one thats not lighting up. I have found and downloaded the manual for the 50sbx70b but looks like the platform is different. My boards read different letters at the beginning of the location numbers than the service manual i have. I figured being almost same model# they would be similar but like i said the letters are all different. Any help would be appreciated. The tv was donated to us as our house burned down 4 weeks ago and I don't have the money to get it fixed or to buy a new TV. Thank You.