I have try to switch on the 3D mode, but still without result. I have now just soltered the 1KR and it will stay there. Thank you so much for telling me about the trick....

Diah
I was now in every menu point and couldnt find something with BL. I made some pictures from my menu, maybe you can see something strange.

lotas
I made an pic from the sticker on my panel, I'm missing the designation at the bottom right like yours in the picture. like " 48A1AF0V"....

Diah nomoresonys
Thanks for your answers, unfortunately I only got to the tests today.

I made like Diah said and connected the cable "BLU_ON/OFF" via 1KR to PS-ON. The Backlight is working with that trick. In the Service Menu, I selected as Type the "48A1AF0V" and made an factory reset. After the restart, I tested some functions like playing videos from USB, and it worked everything ok. Then I removed again the 1KR and connected the cable to the mainboard. Unfortunately, the backlight again doesn't work. I installed again the 1kr and entered the Service...

Hello, I have a problem with my Samsung UE48H6410SSXZG with the main board BN41-02156A and the power board BN44-00709A. Everything seemed like this, the TV could no longer be switched on, the standby LED always flashed 5x2 times. Backlight was off and no sound from TV. Also made the flashlight test and there was no picture.

I made the following tests:
1. Disconnected the main board from Power Board = backlight works.
2. Connected the main board and disconnected the T-Con = backlights does not work.

So I ordered a main board from Ebay also BN41-02156A but from...