Re: LG 42" LCD TV 42LG50 - Will not boot, continuous rebooting, no display

It's alive!!!

New [to me] T-Con board installed and all is good! Super big thanks to everyone here. I wouldn't have even tried this if it wasn't for this forum.

Re: LG 42" LCD TV 42LG50 - Will not boot, continuous rebooting, no display

I have a replacement on the way; should be here Thursday or Friday. I'll be sure to report back once I get it in. Thanks again, you've been helpful as always!

Re: LG 42" LCD TV 42LG50 - Will not boot, continuous rebooting, no display

Yes, with T-Con disconnected.

Re: LG 42" LCD TV 42LG50 - Will not boot, continuous rebooting, no display

Thanks! I'm getting 12.38V on those 4 pins.

Re: LG 42" LCD TV 42LG50 - Will not boot, continuous rebooting, no display

Is the picture I posted above have the LCD panel number? If not, I can look again.



10V on both sides of the fuse. Of course the voltage drops to zero as it reboots/resets....

Re: LG 42" LCD TV 42LG50 - Will not boot, continuous rebooting, no display

Thanks for checking!

Fuse is good. For anyone else reading, I found [URL="https://www.badcaps.net/forum/showthread.php?t=20911"]this thread[/URL] which has a great reference on this exact T-Con board and how to find and check the fuse.

One thing I did notice after I unhooked the T-Con board and started it up was that the backlight does blink once but doesn't stay on. Not sure if that's significant or not. I just hope it's that the TV is smart enough to realize...

Re: LG 42" LCD TV 42LG50 - Will not boot, continuous rebooting, no display

On a whim I decided to unhook the T-Con board from the main board. And...it powered up and stayed powered up! Not that I could see anything, but both the power indicator on the front and the LED on the main board indicate that it's booted "normally" (minus the screen, of course).

Pic of the T-Con board is attached.

So, probably a bad T-Con board? Anything I can do to confirm that, or do I just go ahead and replace it since it's a relatively cheap part?...

Re: LG 42" LCD TV 42LG50 - Will not boot, continuous rebooting, no display

Didn't find anything obvious inside - no bulging caps, no fried components. Forgot to check for blown fuses (oops) but I will. Any hints on where they're all located on this thing?

The only thing I noticed was that there is a small green LED on the main board that does come on when the TV is plugged in. It flickers off and then back on as it reboots. I will say that it seems to reboot right when I believe the screen should be powering up.

Attached are some pics of the i...

This weekend my LG 42" LCD TV decided to go blank as I was watching it. It then began constant rebooting, accompanied by a "pop" from the speakers (not an electronic/circuitry pop, thank goodness!), and that now repeats for as long as you want while it's plugged in. There is no display. The only response you get from the TV is the power indicator will pulse like a normal startup, then the "pop," and then the repeat. I couldn't find anything quite like that using search, so here I am.

I took a quick video of what it does:
[url]http://www.youtube.com/watch?v=KUCq00gsD8Y[/url]...