Re: LG 42LN5200-UM Has backlight, audio. No picture

Yes, it has an external power brick: 24v 3.42A. I tested just the brick under no load and it gives 24.3v. I'll try to find the repair manual or some schematics of the main board so that I can see where I can probe for voltage while under load.

Thanks a lot.

Edit: @budm Yes, meter is set to DCV and I'll swap the battery for a new one just to be sure and I'll retest. Thank You

Edit2: Swapped the batteries on my tester and I get the same results.

Re: LG 42LN5200-UM Has backlight, audio. No picture

TV on, negative probe to ground, positive probe in turn to each side of fuse.

I have 7.99v on each side of F1

Re: LG 42LN5200-UM Has backlight, audio. No picture

Thank you for the reply and sorry for the delay. I hope I am doing this right: Negative probe on ground screw, positive on test point while TV turned on.

Vcc: 2.05v
Vdd: 0v
Vgl: 0.009v
Vgh: 0v
Vcc18: 0.97v

Thank You.

Hello everyone,

I have acquired an LG 42LN5200-UM TV from a family member. I want to see if I can get some help finding out what's wrong and seeing if a repair is worth it. I was told that a couple of days ago when they turned the TV on, the only thing they got was sound. I opened it up and took some pictures with my phone, I don't have a real camera so I hope those will work OK.

I don't see any blown/bulged capacitors or any obvious signs of burnt components. The TV turns on, the backlight and sound are working and it appears to respond to inputs from the remote control....

Re: New Members - please post your introductions here

Hello everyone, I found this forum while looking to resolve an issue with a TV. I found lots of useful information and I am glad I found it.