Re: LG 47LN5400 LED TV shows no picture but there is sound

Yes, I have a DC voltage supply where I can adjust the voltage, it has probes for me to test the circuit. I used 24v for one single string.

LG 47LN5400-UA BUSYLHR model turning on, has sound, but shows no picture. Flashlight test reveals menu successfully.

I opened the hood, checked the power supply to main board wiring. I am getting standby voltage of 3.5V, all other voltages in the row are also working fine. Power supply board# LG EAY62810801 (EAX64905501(2.2)).

Next, I looked at the output to LED side, it was measuring up to 83V and 79V respectively.

I checked the LED strips, 3 LED strips were not working out of 6 (No. 2nd, 3rd and 4th from top). So, I replaced all, got replacement...

Re: New Members - please post your introductions here

Hi,
I am a newbie at TV repairing and got a taste for the trade when my LG LED TV 47LN5400-UA BUSYLHR stopped turning on.

For a month or so, I have been trying to brush my electrical concepts to get it to work again. But I think I would need some expert advice, and that is the reason I am here.