Black screen LG 43UK6300PLB

[Breadwitholives]

Hi Guys.

Probably something that have been seen before.

Out of the blue the screen turned black but can still hear the audio.

I can see the backlight on so that's something we can exclude.

Now, i have found a video on youtube of this guy taping x amount of pins on the cable that goes from the mainboard to the screen. Tried that, i can see the screen now but the bottom of it still remains black with a lot of vertical distortions.

I have been told that the Tcon board needs replacing. I can see that are different opinions on where tcon board is. Some say tcon board is attached to the screen (actually 2 boards, long and narrow) and some say the tcon board is integrated on the mainboard.

I'm too inexperienced to find where the fault is, i'd love to know if there is a simple fix/replace i can perform to avoid buying a new tele.

Thanks for you help

Livio

[Breadwitholives]

Re: Black screen LG 43UK6300PLB

Something i have missed to mention, it does not matter if i disconnect one of the cable that goes to the screen, i am not able to see any of the two halves of the screen working correctly.

[vinceroger69]

Re: Black screen LG 43UK6300PLB

could be bad solder balls on the ic under the aliminium heat sink on the main board a lot of lgs suffer from it. If a replacement mainboard was available at a resonable price and came with a gaurantee i would certainly be trying a replacement board.

[Breadwitholives]

Re: Black screen LG 43UK6300PLB

Thanks. I have ordered one for £10 including shipping. hope for the best.

Another question, what are those 2 boards attached to the screen?

[dskall]

Re: Black screen LG 43UK6300PLB

Those are the panel boards that distribute the voltages and data out to the panel. Sometimes they are also incorporate the t-con on the panel boards.

[Biruslapio]

Re: Black screen LG 43UK6300PLB

I've been seeing more and more LG K series having panel problems, the most common fault is just a black screen, no image at all.

Like their F, H and J models, all have garbage panels that last 3 years.

[Davi.p]

Re: Black screen LG 43UK6300PLB

I bet for a bad cap on the the panel's boards, often almost easy to find, but the fact you can obtain an image with tape method gives me a doubt, can you show us a photo of that bad picture?

[Breadwitholives]

Re: Black screen LG 43UK6300PLB

HI. Unfortunately i tried again to do the trick with the tape but does not work anymore.

I did not purchase anything yet and i'm tempted to put the tv in the skip.

I'd like to be certain is the mainboard and not the lcd screen.

[nomoresonys]

Re: Black screen LG 43UK6300PLB

maybe tear it down and inspect the cofs, lots of times you find one that's obviously burnt.

[Easky15]

Re: Black screen LG 43UK6300PLB

Any luck with this one yet? I have the exact same TV with the exact same fault..