2011 rca 46la55r120q led tv - backlight works, no picture, no sound

[kburks1230]

Re: 2011 rca 46la55r120q led tv - backlight works, no picture, no sound

Hmm, yeah, I looked closely at that board again and the power for the t-con passes straight through the board. Not sure what else to suggest; looks like your main board is bad.

I replaced the main board, now I have 12v on the 4 red wires where there was no voltage before. I also replaced the TCON board and still have something like .3v on the fuse on the TCON board. What the heck?

I still have the same problem, no pic or sound...

[tom66]

Re: 2011 rca 46la55r120q led tv - backlight works, no picture, no sound

Could be a broken connector or wire assembly?

[kburks1230]

Re: 2011 rca 46la55r120q led tv - backlight works, no picture, no sound

What about this board:
This board goes between the main board and the TCON board:
DIGITAL BOARD RE3342B051-C1

[tom66]

Re: 2011 rca 46la55r120q led tv - backlight works, no picture, no sound

Can we get a pic of it? Could be motion FRC for 120Hz picture.

[lalin]

Re: 2011 rca 46la55r120q led tv - backlight works, no picture, no sound

Is this the best way to know the logic board is working, to test the voltages coming out of it? thanks