****Finallly UPDATE****


after replacing the 2 LVDS cables since I had from donor TV... the screen came on..... ANOTHER TV FIXED lol.. I cant believe it the cables was giving me problems

*****Updated**** once I replaced the TCONN Board TV booted up without issues with Mainboard connected and no blinking errors. only problem is the screen is black now. what else could be wrong ? tv is facing down. I will try and flip it over later and see if I can connect some HDMI to it and see if anything shows. but as of now screen is black nothing. but TV is on.

Hi, I will try this test to rule out my motherboard. I tested power supply but jumping pins I have all voltage 3.5v, 12V, 24V. when I press power button on TV or remote nothing happens. I tried on 3 different mainboards.. I cant be that lucky all 3 Mainboards are bad? will try this test to see if panel comes on... with your trick without the Mainboard connected and LVDS cable not connected .. panel should turn on and I should see color or sometihng ?...

Hello everyone. I joined to forum to learn more about issue with my TV and hope to learn alot from you guys. nice to meet everyone.