Re: LG 55EC9300 OLED half picture problems

Well....looks like I'm throwing in the towel. I ended up purchasing another fully working 55EC9300 and trying the ribbon cable and then the Main board from that TV and the screen was exactly the same. (Remember I had already tried a new T-Con and power supply board and swapping around the ribbon cables)

So looks like this is panel failure of some kind. Shame too....because the left side looks great! hah.. So I will be parting out this TV since all three boards are known good and working.

Thanks everyone for...

Re: LG 55EC9300 OLED half picture problems

Well I did spend a little more time on this. I changed around all of the ribbon cables between the T-con and the display...wiping down their connections before re-installing them. So the ribbon cable in position one is now position 3, position 2 is now position 1, etc.

No change at all.

What sucks is that a couple years ago I had an extra cable (the LVDS?) from the T-Con to the main board (I had a completely failed main board when I got the TV....) and those cables and main board sat around forever before I finally...

Re: LG 55EC9300 OLED half picture problems



Thanks for this clarification. I just finished heating the main board while the TV was on playing a netflix movie. No change at all during, or after.

Yeah, such a strange problem. TV works perfectly otherwise. So strange.


Here is a video:
[url]https://youtu.be/TycrzCdtr7w[/url]Re: LG 55EC9300 OLED half picture pr... change at all...

Re: LG 55EC9300 OLED half picture problems

Thanks everyone for the replies.
I removed the main board and went over it with a heat gun. Reinstalled it and there is no change to the symptom, it's exactly the same.

I will give it another try. Interesting about the IN_STOP suggestion. What will that do relative to the issue?

Re: LG 55EC9300 OLED half picture problems

Thank you Budwich. I am traveling tomorrow but will try to inspect closely and send any pics that might points us to the right direction.
I agree, it does seem weird that the screen isn't completely dark or that the TV hasn't gone into protection mode.

I actually watched it yesterday for about an hour as a test and it worked perfectly fine except the display--pictured just like the above. So strange. One other odd observation. When I turn the TV on and get the relay click from the power supply, after a second or so...

Re: LG 55EC9300 OLED half picture problems

Anyone? I'm curious if everything is ok my TV but the OLED display panel finally died.

Hello everyone. New member here posting because I have an LG 55EC9300 OLED that recently began to act up. I've done some searches here and the technical breadth of this group seems to be some of the best I've seen on forums anywhere (AVS, etc.) so I thought I would request some additional opinions.

This TV has worked fine for years but just two weekends ago we came back from a weekend trip to find that the TV's display only seems to half work. Overall, the operation of the TV is as normal--the TV turns on, can stream Netflix, the HDMI input works, the audio works, the menus work,...

Re: New Members - please post your introductions here

Hey everyone. Have some issues with my LG OLED TV, and after searching some threads I wanted other opinions on what its possible issue is.