Chosen Solution
This tv has no backlight but has sound and picture. If I disconnect the t-con board from the power supply and turn the tv on, the backlight will flash on when unplugging. But only for a split second. There are only four wires going to the led strips attached to: D1+, D1-, D2+, and D2-.
I’m guessing since I see a brief flash the led strips work but aren’t coming on when being told to. EDIT I get 243v from D1+ and D1- but nothing from D2+ and D2-. Added a photo of the Led Strip connection pinout. Here is the typed out version 9 D2- 8 D2- 7 NC 6 D2+ 5 NC 4 D1- 3 NC 2 D1+ 1 D1+ All help is greatly appreciated! Thanks,
Travis
Hi @paxonator , Disconnect the power from the TV and restore all the connections between the boards, then disconnect the mainboard from the power board and then reconnect the power to the TV. The backlights should turn on full intensity and stay on. If they blink or don’t stay on then there is a problem either with the power board or the backlights Check the voltage at the LED power connector on the power board. If the backlights aren’t on and it is >230V DC then there is a problem between the power board and/or in the LED array. If it is <50VDC it is in the power board. Test between the connector and earth for the voltage If the backlights stay on then there may be a problem in the mainboard or the power board.
